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CVE-2024-42315 (GCVE-0-2024-42315)

Vulnerability from cvelistv5 – Published: 2024-08-17 09:09 – Updated: 2026-05-23 15:52
VLAI
Title
exfat: fix potential deadlock on __exfat_get_dentry_set
Summary
In the Linux kernel, the following vulnerability has been resolved: exfat: fix potential deadlock on __exfat_get_dentry_set When accessing a file with more entries than ES_MAX_ENTRY_NUM, the bh-array is allocated in __exfat_get_entry_set. The problem is that the bh-array is allocated with GFP_KERNEL. It does not make sense. In the following cases, a deadlock for sbi->s_lock between the two processes may occur. CPU0 CPU1 ---- ---- kswapd balance_pgdat lock(fs_reclaim) exfat_iterate lock(&sbi->s_lock) exfat_readdir exfat_get_uniname_from_ext_entry exfat_get_dentry_set __exfat_get_dentry_set kmalloc_array ... lock(fs_reclaim) ... evict exfat_evict_inode lock(&sbi->s_lock) To fix this, let's allocate bh-array with GFP_NOFS.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 16:09 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: bd3bdb9e0d656f760b11d0c638d35d7f7068144d , < 632fb232b6bbf8277edcbe9ecd4b4d98ecb122eb (git)
Affected: 92dcd7d6c6068bf4fd35a6f64d606e27d634807e , < c052f775ee6ccacd3c97e4cf41a2a657e63d4259 (git)
Affected: d8fe01ad2d8ab33aaf8f2efad9e8f1dae11c4b0c , < cd1c7858641384191ff7033fb1fc65dfcd559c6f (git)
Affected: a3ff29a95fde16906304455aa8c0bd84eb770258 , < a7ac198f8dba791e3144c4da48a5a9b95773ee4b (git)
Affected: a3ff29a95fde16906304455aa8c0bd84eb770258 , < 1d1970493c289e3f44b9ec847ed26a5dbdf56a62 (git)
Affected: a3ff29a95fde16906304455aa8c0bd84eb770258 , < 89fc548767a2155231128cb98726d6d2ea1256c9 (git)
Affected: 5.10.190 , < 5.10.232 (semver)
Affected: 5.15.150 , < 5.15.175 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 5.10.232 , ≤ 5.10.* (semver)
Unaffected: 5.15.175 , ≤ 5.15.* (semver)
Unaffected: 6.6.44 , ≤ 6.6.* (semver)
Unaffected: 6.10.3 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: fix potential deadlock on __exfat_get_dentry_set\n\nWhen accessing a file with more entries than ES_MAX_ENTRY_NUM, the bh-array\nis allocated in __exfat_get_entry_set. The problem is that the bh-array is\nallocated with GFP_KERNEL. It does not make sense. In the following cases,\na deadlock for sbi-\u003es_lock between the two processes may occur.\n\n       CPU0                CPU1\n       ----                ----\n  kswapd\n   balance_pgdat\n    lock(fs_reclaim)\n                      exfat_iterate\n                       lock(\u0026sbi-\u003es_lock)\n                       exfat_readdir\n                        exfat_get_uniname_from_ext_entry\n                         exfat_get_dentry_set\n                          __exfat_get_dentry_set\n                           kmalloc_array\n                            ...\n                            lock(fs_reclaim)\n    ...\n    evict\n     exfat_evict_inode\n      lock(\u0026sbi-\u003es_lock)\n\nTo fix this, let\u0027s allocate bh-array with GFP_NOFS."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: exfat: corrige un posible punto muerto en __exfat_get_dentry_set Al acceder a un archivo con m\u00e1s entradas que ES_MAX_ENTRY_NUM, la matriz bh se asigna en __exfat_get_entry_set. El problema es que el bh-array est\u00e1 asignado con GFP_KERNEL. No tiene sentido. En los siguientes casos, puede ocurrir un punto muerto para sbi-\u0026gt;s_lock entre los dos procesos. CPU0 CPU1 ---- ---- kswapd balance_pgdat lock(fs_reclaim) exfat_iterate lock(\u0026amp;sbi-\u0026gt;s_lock) exfat_readdir exfat_get_uniname_from_ext_entry exfat_get_dentry_set __exfat_get_dentry_set kmalloc_array ... lock(fs_reclaim) ... desalojar exfat_evict_inode lock(\u0026amp;sbi-\u0026gt;s_lock) para arreglar esto, asignemos bh-array con GFP_NOFS."
          }
        ],
        "id": "CVE-2024-42315",
        "lastModified": "2026-06-17T07:49:14.643",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2024-42315",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T16:09:45.977516Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2024-08-17T09:15:11.470",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/1d1970493c289e3f44b9ec847ed26a5dbdf56a62"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/632fb232b6bbf8277edcbe9ecd4b4d98ecb122eb"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/89fc548767a2155231128cb98726d6d2ea1256c9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a7ac198f8dba791e3144c4da48a5a9b95773ee4b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/c052f775ee6ccacd3c97e4cf41a2a657e63d4259"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/cd1c7858641384191ff7033fb1fc65dfcd559c6f"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-667"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T08:02:29+00:00",
      "cve": "CVE-2024-42315",
      "id": "CVE-2024-42315",
      "initial_release_date": "2024-08-17T00:00:00+00:00",
      "product_status:fixed": "305",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: exfat: fix potential deadlock on __exfat_get_dentry_set",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-42315.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-12T16:59:37Z",
      "cve": "CVE-2024-42315",
      "id": "CVE-2024-42315",
      "initial_release_date": "2024-08-18T02:02:11Z",
      "product_status:known_affected": "340",
      "product_status:known_not_affected": "260",
      "product_status:recommended": "686",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-42315",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-42315.json",
      "version": "65"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2025-11-03T20:38:38.291Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
              },
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-42315",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-09-10T16:09:45.977516Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
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            ],
            "providerMetadata": {
              "dateUpdated": "2024-09-11T12:42:23.407Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "fs/exfat/dir.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "632fb232b6bbf8277edcbe9ecd4b4d98ecb122eb",
                  "status": "affected",
                  "version": "bd3bdb9e0d656f760b11d0c638d35d7f7068144d",
                  "versionType": "git"
                },
                {
                  "lessThan": "c052f775ee6ccacd3c97e4cf41a2a657e63d4259",
                  "status": "affected",
                  "version": "92dcd7d6c6068bf4fd35a6f64d606e27d634807e",
                  "versionType": "git"
                },
                {
                  "lessThan": "cd1c7858641384191ff7033fb1fc65dfcd559c6f",
                  "status": "affected",
                  "version": "d8fe01ad2d8ab33aaf8f2efad9e8f1dae11c4b0c",
                  "versionType": "git"
                },
                {
                  "lessThan": "a7ac198f8dba791e3144c4da48a5a9b95773ee4b",
                  "status": "affected",
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                  "versionType": "git"
                },
                {
                  "lessThan": "1d1970493c289e3f44b9ec847ed26a5dbdf56a62",
                  "status": "affected",
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                  "versionType": "git"
                },
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                  "status": "affected",
                  "version": "a3ff29a95fde16906304455aa8c0bd84eb770258",
                  "versionType": "git"
                },
                {
                  "lessThan": "5.10.232",
                  "status": "affected",
                  "version": "5.10.190",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.15.175",
                  "status": "affected",
                  "version": "5.15.150",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "fs/exfat/dir.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.2"
                },
                {
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                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
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                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.232",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.175",
                  "versionType": "semver"
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                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.44",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.10.*",
                  "status": "unaffected",
                  "version": "6.10.3",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.11",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
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              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                      "versionStartIncluding": "5.15.150",
                      "vulnerable": true
                    },
                    {
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                  "negate": false,
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          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: fix potential deadlock on __exfat_get_dentry_set\n\nWhen accessing a file with more entries than ES_MAX_ENTRY_NUM, the bh-array\nis allocated in __exfat_get_entry_set. The problem is that the bh-array is\nallocated with GFP_KERNEL. It does not make sense. In the following cases,\na deadlock for sbi-\u003es_lock between the two processes may occur.\n\n       CPU0                CPU1\n       ----                ----\n  kswapd\n   balance_pgdat\n    lock(fs_reclaim)\n                      exfat_iterate\n                       lock(\u0026sbi-\u003es_lock)\n                       exfat_readdir\n                        exfat_get_uniname_from_ext_entry\n                         exfat_get_dentry_set\n                          __exfat_get_dentry_set\n                           kmalloc_array\n                            ...\n                            lock(fs_reclaim)\n    ...\n    evict\n     exfat_evict_inode\n      lock(\u0026sbi-\u003es_lock)\n\nTo fix this, let\u0027s allocate bh-array with GFP_NOFS."
            }
          ],
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            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
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            {
              "url": "https://git.kernel.org/stable/c/89fc548767a2155231128cb98726d6d2ea1256c9"
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      "cveMetadata": {
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        "assignerShortName": "Linux",
        "cveId": "CVE-2024-42315",
        "datePublished": "2024-08-17T09:09:23.779Z",
        "dateReserved": "2024-07-30T07:40:12.278Z",
        "dateUpdated": "2026-05-23T15:52:53.654Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.


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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.