Vulnerability-Lookup

FKIE_CVE-2025-39735

Vulnerability from fkie_nvd - Published: 2025-04-18 07:15 - Updated: 2026-06-17 09:18

Severity

7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: jfs: fix slab-out-of-bounds read in ea_get() During the "size_check" label in ea_get(), the code checks if the extended attribute list (xattr) size matches ea_size. If not, it logs "ea_get: invalid extended attribute" and calls print_hex_dump(). Here, EALIST_SIZE(ea_buf->xattr) returns 4110417968, which exceeds INT_MAX (2,147,483,647). Then ea_size is clamped: int size = clamp_t(int, ea_size, 0, EALIST_SIZE(ea_buf->xattr)); Although clamp_t aims to bound ea_size between 0 and 4110417968, the upper limit is treated as an int, causing an overflow above 2^31 - 1. This leads "size" to wrap around and become negative (-184549328). The "size" is then passed to print_hex_dump() (called "len" in print_hex_dump()), it is passed as type size_t (an unsigned type), this is then stored inside a variable called "int remaining", which is then assigned to "int linelen" which is then passed to hex_dump_to_buffer(). In print_hex_dump() the for loop, iterates through 0 to len-1, where len is 18446744073525002176, calling hex_dump_to_buffer() on each iteration: for (i = 0; i < len; i += rowsize) { linelen = min(remaining, rowsize); remaining -= rowsize; hex_dump_to_buffer(ptr + i, linelen, rowsize, groupsize, linebuf, sizeof(linebuf), ascii); ... } The expected stopping condition (i < len) is effectively broken since len is corrupted and very large. This eventually leads to the "ptr+i" being passed to hex_dump_to_buffer() to get closer to the end of the actual bounds of "ptr", eventually an out of bounds access is done in hex_dump_to_buffer() in the following for loop: for (j = 0; j < len; j++) { if (linebuflen < lx + 2) goto overflow2; ch = ptr[j]; ... } To fix this we should validate "EALIST_SIZE(ea_buf->xattr)" before it is utilised.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0beddc2a3f9b9cf7d8887973041e36c2d0fa3652	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/16d3d36436492aa248b2d8045e75585ebcc2f34d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3d6fd5b9c6acbc005e53d0211c7381f566babec1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/46e2c031aa59ea65128991cbca474bd5c0c2ecdb	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/50afcee7011155933d8d5e8832f52eeee018cfd3	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5263822558a8a7c0d0248d5679c2dcf4d5cda61f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/78c9cbde8880ec02d864c166bcb4fe989ce1d95f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a8c31808925b11393a6601f534bb63bac5366bab	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fdf480da5837c23b146c4743c18de97202fcab37	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/jfs/xattr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3d6fd5b9c6acbc005e53d0211c7381f566babec1",
              "status": "affected",
              "version": "6e39b681d1eb16f408493bf5023788b57f68998c",
              "versionType": "git"
            },
            {
              "lessThan": "50afcee7011155933d8d5e8832f52eeee018cfd3",
              "status": "affected",
              "version": "bbf3f1fd8a0ac7df1db36a9b9e923041a14369f2",
              "versionType": "git"
            },
            {
              "lessThan": "78c9cbde8880ec02d864c166bcb4fe989ce1d95f",
              "status": "affected",
              "version": "27a93c45e16ac25a0e2b5e5668e2d1beca56a478",
              "versionType": "git"
            },
            {
              "lessThan": "46e2c031aa59ea65128991cbca474bd5c0c2ecdb",
              "status": "affected",
              "version": "9c356fc32a4480a2c0e537a05f2a8617633ddad0",
              "versionType": "git"
            },
            {
              "lessThan": "a8c31808925b11393a6601f534bb63bac5366bab",
              "status": "affected",
              "version": "9353cdf28d4c5c0ff19c5df7fbf81ea774de43a4",
              "versionType": "git"
            },
            {
              "lessThan": "0beddc2a3f9b9cf7d8887973041e36c2d0fa3652",
              "status": "affected",
              "version": "8c505ebeed8045b488b2e60b516c752b851f8437",
              "versionType": "git"
            },
            {
              "lessThan": "16d3d36436492aa248b2d8045e75585ebcc2f34d",
              "status": "affected",
              "version": "d9f9d96136cba8fedd647d2c024342ce090133c2",
              "versionType": "git"
            },
            {
              "lessThan": "5263822558a8a7c0d0248d5679c2dcf4d5cda61f",
              "status": "affected",
              "version": "d9f9d96136cba8fedd647d2c024342ce090133c2",
              "versionType": "git"
            },
            {
              "lessThan": "fdf480da5837c23b146c4743c18de97202fcab37",
              "status": "affected",
              "version": "d9f9d96136cba8fedd647d2c024342ce090133c2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4ea25fa8747fb8b1e5a11d87b852023ecf7ae420",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "676a787048aafd4d1b38a522b05a9cc77e1b0a33",
              "versionType": "git"
            },
            {
              "lessThan": "5.4.292",
              "status": "affected",
              "version": "5.4.287",
              "versionType": "semver"
            },
            {
              "lessThan": "5.10.236",
              "status": "affected",
              "version": "5.10.231",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.180",
              "status": "affected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.134",
              "status": "affected",
              "version": "6.1.120",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.87",
              "status": "affected",
              "version": "6.6.64",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.23",
              "status": "affected",
              "version": "6.12.2",
              "versionType": "semver"
            },
            {
              "lessThan": "4.20",
              "status": "affected",
              "version": "4.19.325",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12",
              "status": "affected",
              "version": "6.11.11",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/jfs/xattr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.292",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.236",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.180",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.134",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.87",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3C960EB7-4E90-49E0-BB92-BE6F1B8CF26F",
              "versionEndExcluding": "4.20",
              "versionStartIncluding": "4.19.325",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "16E1C46D-7C0B-4307-928A-8D0ABDF8D1B8",
              "versionEndExcluding": "5.4.292",
              "versionStartIncluding": "5.4.287",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8F0C4A9A-87C3-4779-923D-5E19C9A26EA9",
              "versionEndExcluding": "5.10.236",
              "versionStartIncluding": "5.10.231",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B6B383DC-5ED6-4326-885D-2F161A71E2D5",
              "versionEndExcluding": "5.15.180",
              "versionStartIncluding": "5.15.174",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B9344B2D-88D1-4540-9748-8CC37D3B25C8",
              "versionEndExcluding": "6.1.134",
              "versionStartIncluding": "6.1.120",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "042FFA18-3C6A-4999-AB8F-4F6F5902BEEA",
              "versionEndExcluding": "6.6.87",
              "versionStartIncluding": "6.6.64",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4CBF5F6E-D446-4CAE-AAA4-413442319824",
              "versionEndExcluding": "6.12",
              "versionStartIncluding": "6.11.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B5C71FC9-A61C-431A-9215-38D09F5A2FF3",
              "versionEndExcluding": "6.12.23",
              "versionStartIncluding": "6.12.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E7E864B0-8C00-4679-BA55-659B4C9C3AD3",
              "versionEndExcluding": "6.13.11",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FADAE5D8-4808-442C-B218-77B2CE8780A0",
              "versionEndExcluding": "6.14.2",
              "versionStartIncluding": "6.14",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: fix slab-out-of-bounds read in ea_get()\n\nDuring the \"size_check\" label in ea_get(), the code checks if the extended\nattribute list (xattr) size matches ea_size. If not, it logs\n\"ea_get: invalid extended attribute\" and calls print_hex_dump().\n\nHere, EALIST_SIZE(ea_buf-\u003exattr) returns 4110417968, which exceeds\nINT_MAX (2,147,483,647). Then ea_size is clamped:\n\n\tint size = clamp_t(int, ea_size, 0, EALIST_SIZE(ea_buf-\u003exattr));\n\nAlthough clamp_t aims to bound ea_size between 0 and 4110417968, the upper\nlimit is treated as an int, causing an overflow above 2^31 - 1. This leads\n\"size\" to wrap around and become negative (-184549328).\n\nThe \"size\" is then passed to print_hex_dump() (called \"len\" in\nprint_hex_dump()), it is passed as type size_t (an unsigned\ntype), this is then stored inside a variable called\n\"int remaining\", which is then assigned to \"int linelen\" which\nis then passed to hex_dump_to_buffer(). In print_hex_dump()\nthe for loop, iterates through 0 to len-1, where len is\n18446744073525002176, calling hex_dump_to_buffer()\non each iteration:\n\n\tfor (i = 0; i \u003c len; i += rowsize) {\n\t\tlinelen = min(remaining, rowsize);\n\t\tremaining -= rowsize;\n\n\t\thex_dump_to_buffer(ptr + i, linelen, rowsize, groupsize,\n\t\t\t\t   linebuf, sizeof(linebuf), ascii);\n\n\t\t...\n\t}\n\nThe expected stopping condition (i \u003c len) is effectively broken\nsince len is corrupted and very large. This eventually leads to\nthe \"ptr+i\" being passed to hex_dump_to_buffer() to get closer\nto the end of the actual bounds of \"ptr\", eventually an out of\nbounds access is done in hex_dump_to_buffer() in the following\nfor loop:\n\n\tfor (j = 0; j \u003c len; j++) {\n\t\t\tif (linebuflen \u003c lx + 2)\n\t\t\t\tgoto overflow2;\n\t\t\tch = ptr[j];\n\t\t...\n\t}\n\nTo fix this we should validate \"EALIST_SIZE(ea_buf-\u003exattr)\"\nbefore it is utilised."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: jfs: correcci\u00f3n de lectura fuera de los l\u00edmites de slab en ea_get(). Durante la etiqueta \"size_check\" en ea_get(), el c\u00f3digo comprueba si el tama\u00f1o de la lista de atributos extendidos (xattr) coincide con ea_size. De lo contrario, registra \"ea_get: atributo extendido no v\u00e1lido\" y llama a print_hex_dump(). En este caso, EALIST_SIZE(ea_buf-\u0026gt;xattr) devuelve 4110417968, que excede INT_MAX (2147483647). A continuaci\u00f3n, se fija ea_size: int size = clamp_t(int, ea_size, 0, EALIST_SIZE(ea_buf-\u0026gt;xattr)); Aunque clamp_t busca limitar ea_size entre 0 y 4110417968, el l\u00edmite superior se trata como un entero, lo que provoca un desbordamiento por encima de 2^31 - 1. Esto hace que \"size\" se repita y se vuelva negativo (-184549328). El \"size\" se pasa a print_hex_dump() (llamado \"len\" en print_hex_dump()) como tipo size_t (un tipo sin signo). Este se almacena en una variable llamada \"int remaining\", que se asigna a \"int linelen\", que a su vez se pasa a hex_dump_to_buffer(). En print_hex_dump(), el bucle for itera desde 0 hasta len-1, donde len es 18446744073525002176 y llama a hex_dump_to_buffer() en cada iteraci\u00f3n: for (i = 0; i \u0026lt; len; i += rowsize) { linelen = min(remaining, rowsize); remaining -= rowsize; hex_dump_to_buffer(ptr + i, linelen, rowsize, groupsize, linebuf, sizeof(linebuf), ascii); ... } La condici\u00f3n de detenci\u00f3n esperada (i \u0026lt; len) se rompe efectivamente ya que len est\u00e1 da\u00f1ado y es muy grande. Esto eventualmente lleva a que \"ptr+i\" se pase a hex_dump_to_buffer() para acercarse al final de los l\u00edmites reales de \"ptr\", eventualmente se realiza un acceso fuera de los l\u00edmites en hex_dump_to_buffer() en el siguiente bucle for: for (j = 0; j \u0026lt; len; j++) { if (linebuflen \u0026lt; lx + 2) goto overflow2; ch = ptr[j]; ... } Para solucionar esto debemos validar \"EALIST_SIZE(ea_buf-\u0026gt;xattr)\" antes de utilizarlo."
    }
  ],
  "id": "CVE-2025-39735",
  "lastModified": "2026-06-17T09:18:22.470",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-39735",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-10-01T16:13:35.286674Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-04-18T07:15:44.150",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0beddc2a3f9b9cf7d8887973041e36c2d0fa3652"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/16d3d36436492aa248b2d8045e75585ebcc2f34d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3d6fd5b9c6acbc005e53d0211c7381f566babec1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/46e2c031aa59ea65128991cbca474bd5c0c2ecdb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/50afcee7011155933d8d5e8832f52eeee018cfd3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5263822558a8a7c0d0248d5679c2dcf4d5cda61f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/78c9cbde8880ec02d864c166bcb4fe989ce1d95f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a8c31808925b11393a6601f534bb63bac5366bab"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/fdf480da5837c23b146c4743c18de97202fcab37"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}

CVE-2025-39735 (GCVE-0-2025-39735)

Vulnerability from cvelistv5 – Published: 2025-04-18 07:01 – Updated: 2026-08-05 12:04

Title

jfs: fix slab-out-of-bounds read in ea_get()

Summary

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-01 16:13 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

Linux mitre root

References

11 references

URL	Tags
https://git.kernel.org/stable/c/3d6fd5b9c6acbc005…
https://git.kernel.org/stable/c/50afcee7011155933…
https://git.kernel.org/stable/c/78c9cbde8880ec02d…
https://git.kernel.org/stable/c/46e2c031aa59ea651…
https://git.kernel.org/stable/c/a8c31808925b11393…
https://git.kernel.org/stable/c/0beddc2a3f9b9cf7d…
https://git.kernel.org/stable/c/16d3d36436492aa24…
https://git.kernel.org/stable/c/5263822558a8a7c0d…
https://git.kernel.org/stable/c/fdf480da5837c23b1…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 6e39b681d1eb16f408493bf5023788b57f68998c , < 3d6fd5b9c6acbc005e53d0211c7381f566babec1 (git) Affected: bbf3f1fd8a0ac7df1db36a9b9e923041a14369f2 , < 50afcee7011155933d8d5e8832f52eeee018cfd3 (git) Affected: 27a93c45e16ac25a0e2b5e5668e2d1beca56a478 , < 78c9cbde8880ec02d864c166bcb4fe989ce1d95f (git) Affected: 9c356fc32a4480a2c0e537a05f2a8617633ddad0 , < 46e2c031aa59ea65128991cbca474bd5c0c2ecdb (git) Affected: 9353cdf28d4c5c0ff19c5df7fbf81ea774de43a4 , < a8c31808925b11393a6601f534bb63bac5366bab (git) Affected: 8c505ebeed8045b488b2e60b516c752b851f8437 , < 0beddc2a3f9b9cf7d8887973041e36c2d0fa3652 (git) Affected: d9f9d96136cba8fedd647d2c024342ce090133c2 , < 16d3d36436492aa248b2d8045e75585ebcc2f34d (git) Affected: d9f9d96136cba8fedd647d2c024342ce090133c2 , < 5263822558a8a7c0d0248d5679c2dcf4d5cda61f (git) Affected: d9f9d96136cba8fedd647d2c024342ce090133c2 , < fdf480da5837c23b146c4743c18de97202fcab37 (git) Affected: 4ea25fa8747fb8b1e5a11d87b852023ecf7ae420 (git) Affected: 676a787048aafd4d1b38a522b05a9cc77e1b0a33 (git) Affected: 5.4.287 , < 5.4.292 (semver) Affected: 5.10.231 , < 5.10.236 (semver) Affected: 5.15.174 , < 5.15.180 (semver) Affected: 6.1.120 , < 6.1.134 (semver) Affected: 6.6.64 , < 6.6.87 (semver) Affected: 6.12.2 , < 6.12.23 (semver) Affected: 4.19.325 , < 4.20 (semver) Affected: 6.11.11 , < 6.12 (semver)
Linux	Linux	Affected: 6.13 Unaffected: 0 , < 6.13 (semver) Unaffected: 5.4.292 , ≤ 5.4.* (semver) Unaffected: 5.10.236 , ≤ 5.10.* (semver) Unaffected: 5.15.180 , ≤ 5.15.* (semver) Unaffected: 6.1.134 , ≤ 6.1.* (semver) Unaffected: 6.6.87 , ≤ 6.6.* (semver) Unaffected: 6.12.23 , ≤ 6.12.* (semver) Unaffected: 6.13.11 , ≤ 6.13.* (semver) Unaffected: 6.14.2 , ≤ 6.14.* (semver) Unaffected: 6.15 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.1,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-39735",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T16:13:35.286674Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-125",
                "description": "CWE-125 Out-of-bounds Read",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T16:13:38.835Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T19:58:46.112Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/jfs/xattr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3d6fd5b9c6acbc005e53d0211c7381f566babec1",
              "status": "affected",
              "version": "6e39b681d1eb16f408493bf5023788b57f68998c",
              "versionType": "git"
            },
            {
              "lessThan": "50afcee7011155933d8d5e8832f52eeee018cfd3",
              "status": "affected",
              "version": "bbf3f1fd8a0ac7df1db36a9b9e923041a14369f2",
              "versionType": "git"
            },
            {
              "lessThan": "78c9cbde8880ec02d864c166bcb4fe989ce1d95f",
              "status": "affected",
              "version": "27a93c45e16ac25a0e2b5e5668e2d1beca56a478",
              "versionType": "git"
            },
            {
              "lessThan": "46e2c031aa59ea65128991cbca474bd5c0c2ecdb",
              "status": "affected",
              "version": "9c356fc32a4480a2c0e537a05f2a8617633ddad0",
              "versionType": "git"
            },
            {
              "lessThan": "a8c31808925b11393a6601f534bb63bac5366bab",
              "status": "affected",
              "version": "9353cdf28d4c5c0ff19c5df7fbf81ea774de43a4",
              "versionType": "git"
            },
            {
              "lessThan": "0beddc2a3f9b9cf7d8887973041e36c2d0fa3652",
              "status": "affected",
              "version": "8c505ebeed8045b488b2e60b516c752b851f8437",
              "versionType": "git"
            },
            {
              "lessThan": "16d3d36436492aa248b2d8045e75585ebcc2f34d",
              "status": "affected",
              "version": "d9f9d96136cba8fedd647d2c024342ce090133c2",
              "versionType": "git"
            },
            {
              "lessThan": "5263822558a8a7c0d0248d5679c2dcf4d5cda61f",
              "status": "affected",
              "version": "d9f9d96136cba8fedd647d2c024342ce090133c2",
              "versionType": "git"
            },
            {
              "lessThan": "fdf480da5837c23b146c4743c18de97202fcab37",
              "status": "affected",
              "version": "d9f9d96136cba8fedd647d2c024342ce090133c2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4ea25fa8747fb8b1e5a11d87b852023ecf7ae420",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "676a787048aafd4d1b38a522b05a9cc77e1b0a33",
              "versionType": "git"
            },
            {
              "lessThan": "5.4.292",
              "status": "affected",
              "version": "5.4.287",
              "versionType": "semver"
            },
            {
              "lessThan": "5.10.236",
              "status": "affected",
              "version": "5.10.231",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.180",
              "status": "affected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.134",
              "status": "affected",
              "version": "6.1.120",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.87",
              "status": "affected",
              "version": "6.6.64",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.23",
              "status": "affected",
              "version": "6.12.2",
              "versionType": "semver"
            },
            {
              "lessThan": "4.20",
              "status": "affected",
              "version": "4.19.325",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12",
              "status": "affected",
              "version": "6.11.11",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/jfs/xattr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.292",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.236",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.180",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.134",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.87",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.292",
                  "versionStartIncluding": "5.4.287",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.236",
                  "versionStartIncluding": "5.10.231",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.180",
                  "versionStartIncluding": "5.15.174",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.134",
                  "versionStartIncluding": "6.1.120",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.87",
                  "versionStartIncluding": "6.6.64",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.23",
                  "versionStartIncluding": "6.12.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.11",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14.2",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.19.325",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.11.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: fix slab-out-of-bounds read in ea_get()\n\nDuring the \"size_check\" label in ea_get(), the code checks if the extended\nattribute list (xattr) size matches ea_size. If not, it logs\n\"ea_get: invalid extended attribute\" and calls print_hex_dump().\n\nHere, EALIST_SIZE(ea_buf-\u003exattr) returns 4110417968, which exceeds\nINT_MAX (2,147,483,647). Then ea_size is clamped:\n\n\tint size = clamp_t(int, ea_size, 0, EALIST_SIZE(ea_buf-\u003exattr));\n\nAlthough clamp_t aims to bound ea_size between 0 and 4110417968, the upper\nlimit is treated as an int, causing an overflow above 2^31 - 1. This leads\n\"size\" to wrap around and become negative (-184549328).\n\nThe \"size\" is then passed to print_hex_dump() (called \"len\" in\nprint_hex_dump()), it is passed as type size_t (an unsigned\ntype), this is then stored inside a variable called\n\"int remaining\", which is then assigned to \"int linelen\" which\nis then passed to hex_dump_to_buffer(). In print_hex_dump()\nthe for loop, iterates through 0 to len-1, where len is\n18446744073525002176, calling hex_dump_to_buffer()\non each iteration:\n\n\tfor (i = 0; i \u003c len; i += rowsize) {\n\t\tlinelen = min(remaining, rowsize);\n\t\tremaining -= rowsize;\n\n\t\thex_dump_to_buffer(ptr + i, linelen, rowsize, groupsize,\n\t\t\t\t   linebuf, sizeof(linebuf), ascii);\n\n\t\t...\n\t}\n\nThe expected stopping condition (i \u003c len) is effectively broken\nsince len is corrupted and very large. This eventually leads to\nthe \"ptr+i\" being passed to hex_dump_to_buffer() to get closer\nto the end of the actual bounds of \"ptr\", eventually an out of\nbounds access is done in hex_dump_to_buffer() in the following\nfor loop:\n\n\tfor (j = 0; j \u003c len; j++) {\n\t\t\tif (linebuflen \u003c lx + 2)\n\t\t\t\tgoto overflow2;\n\t\t\tch = ptr[j];\n\t\t...\n\t}\n\nTo fix this we should validate \"EALIST_SIZE(ea_buf-\u003exattr)\"\nbefore it is utilised."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - JFS is a block-device filesystem (FS_REQUIRES_DEV); the malicious `size` field must arrive via a locally attached/mounted volume, and the trigger is a local syscall (listxattr/getxattr/setxattr) or an ACL lookup on a file in that volume. There is no network-facing path to `ea_get()`.\nAC:L - The attacker fully and deterministically controls the on-disk `jfs_ea_list.size` field; setting it above INT_MAX guarantees the negative clamp on every access, with no race to win and no dependence on memory layout the attacker cannot influence.\nPR:L - `ea_get()` runs before any permission or name check in `__jfs_getxattr`/`jfs_listxattr`, and is reached from `jfs_get_acl()` during ordinary permission checks, so an unprivileged user with read/search access to the mounted crafted volume triggers it; in the auto-mount/kiosk scenario the equivalent unprivileged-attacker framing PR:N/UI:R yields the same score.\nUI:N - Once the crafted volume is mounted (attacker-inserted removable media auto-mounted by udisks2, or an admin-mounted untrusted image), no victim action is required \u2014 the attacker\u0027s own `listxattr()`/`getxattr()` call, or even a path-traversal ACL lookup, reaches the bug directly.\nS:U - The out-of-bounds reads and the resulting oops are confined to the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The corrupted length drives an effectively unbounded walk past (and before) the ea buffer, hex-dumping 16 bytes of adjacent kernel heap memory per iteration \u2014 together with kernel addresses \u2014 into the kernel log; this is a large-scale kernel memory disclosure, not a small bounded read.\nI:N - The defect is read-only: `hex_dump_to_buffer()` clamps its per-line length to rowsize and bounds-checks `linebuf` at every byte, so no out-of-bounds write or memory corruption occurs and no control-flow primitive is produced.\nA:H - The loop performs billions of `printk` iterations (console livelock, soft lockup, RCU stalls, log flooding) and inevitably dereferences an unmapped kernel address, producing a KASAN report or page-fault oops/panic."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:04:55.584Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3d6fd5b9c6acbc005e53d0211c7381f566babec1"
        },
        {
          "url": "https://git.kernel.org/stable/c/50afcee7011155933d8d5e8832f52eeee018cfd3"
        },
        {
          "url": "https://git.kernel.org/stable/c/78c9cbde8880ec02d864c166bcb4fe989ce1d95f"
        },
        {
          "url": "https://git.kernel.org/stable/c/46e2c031aa59ea65128991cbca474bd5c0c2ecdb"
        },
        {
          "url": "https://git.kernel.org/stable/c/a8c31808925b11393a6601f534bb63bac5366bab"
        },
        {
          "url": "https://git.kernel.org/stable/c/0beddc2a3f9b9cf7d8887973041e36c2d0fa3652"
        },
        {
          "url": "https://git.kernel.org/stable/c/16d3d36436492aa248b2d8045e75585ebcc2f34d"
        },
        {
          "url": "https://git.kernel.org/stable/c/5263822558a8a7c0d0248d5679c2dcf4d5cda61f"
        },
        {
          "url": "https://git.kernel.org/stable/c/fdf480da5837c23b146c4743c18de97202fcab37"
        }
      ],
      "title": "jfs: fix slab-out-of-bounds read in ea_get()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39735",
    "datePublished": "2025-04-18T07:01:36.453Z",
    "dateReserved": "2025-04-16T07:20:57.119Z",
    "dateUpdated": "2026-08-05T12:04:55.584Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

FKIE_CVE-2025-39735

CVE-2025-39735 (GCVE-0-2025-39735)

Tags

Sightings

Nomenclature

Related by attack behaviour