CVE-2024-40913 (GCVE-0-2024-40913)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:24 – Updated: 2026-05-11 20:22
VLAI?
Title
cachefiles: defer exposing anon_fd until after copy_to_user() succeeds
Summary
In the Linux kernel, the following vulnerability has been resolved: cachefiles: defer exposing anon_fd until after copy_to_user() succeeds After installing the anonymous fd, we can now see it in userland and close it. However, at this point we may not have gotten the reference count of the cache, but we will put it during colse fd, so this may cause a cache UAF. So grab the cache reference count before fd_install(). In addition, by kernel convention, fd is taken over by the user land after fd_install(), and the kernel should not call close_fd() after that, i.e., it should call fd_install() after everything is ready, thus fd_install() is called after copy_to_user() succeeds.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c8383054506c77b814489c09877b5db83fd4abf2 , < eac51d9daacd61dcc93333ff6a890cf3efc8c1c0 (git)
Affected: c8383054506c77b814489c09877b5db83fd4abf2 , < d2d3eb377a5d081bf2bed177d354a4f59b74da88 (git)
Affected: c8383054506c77b814489c09877b5db83fd4abf2 , < b9f58cdae6a364a3270fd6b6a46e0fd4f7f8ce32 (git)
Affected: c8383054506c77b814489c09877b5db83fd4abf2 , < 4b4391e77a6bf24cba2ef1590e113d9b73b11039 (git)
Create a notification for this product.
Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.95 , ≤ 6.1.* (semver)
Unaffected: 6.6.35 , ≤ 6.6.* (semver)
Unaffected: 6.9.6 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T21:57:43.508Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/eac51d9daacd61dcc93333ff6a890cf3efc8c1c0"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/d2d3eb377a5d081bf2bed177d354a4f59b74da88"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/b9f58cdae6a364a3270fd6b6a46e0fd4f7f8ce32"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/4b4391e77a6bf24cba2ef1590e113d9b73b11039"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-40913",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T17:05:56.112213Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:34:39.494Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/cachefiles/ondemand.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "eac51d9daacd61dcc93333ff6a890cf3efc8c1c0",
              "status": "affected",
              "version": "c8383054506c77b814489c09877b5db83fd4abf2",
              "versionType": "git"
            },
            {
              "lessThan": "d2d3eb377a5d081bf2bed177d354a4f59b74da88",
              "status": "affected",
              "version": "c8383054506c77b814489c09877b5db83fd4abf2",
              "versionType": "git"
            },
            {
              "lessThan": "b9f58cdae6a364a3270fd6b6a46e0fd4f7f8ce32",
              "status": "affected",
              "version": "c8383054506c77b814489c09877b5db83fd4abf2",
              "versionType": "git"
            },
            {
              "lessThan": "4b4391e77a6bf24cba2ef1590e113d9b73b11039",
              "status": "affected",
              "version": "c8383054506c77b814489c09877b5db83fd4abf2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/cachefiles/ondemand.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.95",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.95",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.35",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.9.6",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: defer exposing anon_fd until after copy_to_user() succeeds\n\nAfter installing the anonymous fd, we can now see it in userland and close\nit. However, at this point we may not have gotten the reference count of\nthe cache, but we will put it during colse fd, so this may cause a cache\nUAF.\n\nSo grab the cache reference count before fd_install(). In addition, by\nkernel convention, fd is taken over by the user land after fd_install(),\nand the kernel should not call close_fd() after that, i.e., it should call\nfd_install() after everything is ready, thus fd_install() is called after\ncopy_to_user() succeeds."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:22:15.067Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/eac51d9daacd61dcc93333ff6a890cf3efc8c1c0"
        },
        {
          "url": "https://git.kernel.org/stable/c/d2d3eb377a5d081bf2bed177d354a4f59b74da88"
        },
        {
          "url": "https://git.kernel.org/stable/c/b9f58cdae6a364a3270fd6b6a46e0fd4f7f8ce32"
        },
        {
          "url": "https://git.kernel.org/stable/c/4b4391e77a6bf24cba2ef1590e113d9b73b11039"
        }
      ],
      "title": "cachefiles: defer exposing anon_fd until after copy_to_user() succeeds",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-40913",
    "datePublished": "2024-07-12T12:24:57.363Z",
    "dateReserved": "2024-07-12T12:17:45.581Z",
    "dateUpdated": "2026-05-11T20:22:15.067Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-40913",
      "date": "2026-05-20",
      "epss": "0.00015",
      "percentile": "0.03025"
    },
    "fkie_nvd": {
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncachefiles: defer exposing anon_fd until after copy_to_user() succeeds\\n\\nAfter installing the anonymous fd, we can now see it in userland and close\\nit. However, at this point we may not have gotten the reference count of\\nthe cache, but we will put it during colse fd, so this may cause a cache\\nUAF.\\n\\nSo grab the cache reference count before fd_install(). In addition, by\\nkernel convention, fd is taken over by the user land after fd_install(),\\nand the kernel should not call close_fd() after that, i.e., it should call\\nfd_install() after everything is ready, thus fd_install() is called after\\ncopy_to_user() succeeds.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cachefiles: difiere la exposici\\u00f3n de anon_fd hasta que copy_to_user() tenga \\u00e9xito. Despu\\u00e9s de instalar el fd an\\u00f3nimo, ahora podemos verlo en el \\u00e1rea de usuario y cerrarlo. Sin embargo, en este punto es posible que no hayamos obtenido el recuento de referencias del cach\\u00e9, pero lo colocaremos durante colse fd, por lo que esto puede causar un UAF de cach\\u00e9. As\\u00ed que tome el recuento de referencias de cach\\u00e9 antes de fd_install(). Adem\\u00e1s, seg\\u00fan la convenci\\u00f3n del kernel, el usuario se hace cargo de fd despu\\u00e9s de fd_install(), y el kernel no debe llamar a close_fd() despu\\u00e9s de eso, es decir, debe llamar a fd_install() despu\\u00e9s de que todo est\\u00e9 listo, por lo que fd_install() es llamado despu\\u00e9s de que copy_to_user() tenga \\u00e9xito.\"}]",
      "id": "CVE-2024-40913",
      "lastModified": "2024-11-21T09:31:50.823",
      "published": "2024-07-12T13:15:14.457",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/4b4391e77a6bf24cba2ef1590e113d9b73b11039\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/b9f58cdae6a364a3270fd6b6a46e0fd4f7f8ce32\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/d2d3eb377a5d081bf2bed177d354a4f59b74da88\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/eac51d9daacd61dcc93333ff6a890cf3efc8c1c0\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/4b4391e77a6bf24cba2ef1590e113d9b73b11039\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/b9f58cdae6a364a3270fd6b6a46e0fd4f7f8ce32\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/d2d3eb377a5d081bf2bed177d354a4f59b74da88\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/eac51d9daacd61dcc93333ff6a890cf3efc8c1c0\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-40913\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-12T13:15:14.457\",\"lastModified\":\"2025-11-03T22:17:13.423\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncachefiles: defer exposing anon_fd until after copy_to_user() succeeds\\n\\nAfter installing the anonymous fd, we can now see it in userland and close\\nit. However, at this point we may not have gotten the reference count of\\nthe cache, but we will put it during colse fd, so this may cause a cache\\nUAF.\\n\\nSo grab the cache reference count before fd_install(). In addition, by\\nkernel convention, fd is taken over by the user land after fd_install(),\\nand the kernel should not call close_fd() after that, i.e., it should call\\nfd_install() after everything is ready, thus fd_install() is called after\\ncopy_to_user() succeeds.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cachefiles: difiere la exposici\u00f3n de anon_fd hasta que copy_to_user() tenga \u00e9xito. Despu\u00e9s de instalar el fd an\u00f3nimo, ahora podemos verlo en el \u00e1rea de usuario y cerrarlo. Sin embargo, en este punto es posible que no hayamos obtenido el recuento de referencias del cach\u00e9, pero lo colocaremos durante colse fd, por lo que esto puede causar un UAF de cach\u00e9. As\u00ed que tome el recuento de referencias de cach\u00e9 antes de fd_install(). Adem\u00e1s, seg\u00fan la convenci\u00f3n del kernel, el usuario se hace cargo de fd despu\u00e9s de fd_install(), y el kernel no debe llamar a close_fd() despu\u00e9s de eso, es decir, debe llamar a fd_install() despu\u00e9s de que todo est\u00e9 listo, por lo que fd_install() es llamado despu\u00e9s de que copy_to_user() tenga \u00e9xito.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.19\",\"versionEndExcluding\":\"6.1.95\",\"matchCriteriaId\":\"E0A7F60D-A7BB-486D-9C47-C6BD16DE5AC3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.35\",\"matchCriteriaId\":\"6F019D15-84C0-416B-8C57-7F51B68992F0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.9.6\",\"matchCriteriaId\":\"0ABBBA1D-F79D-4BDB-AA41-D1EDCC4A6975\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"2EBB4392-5FA6-4DA9-9772-8F9C750109FA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"331C2F14-12C7-45D5-893D-8C52EE38EA10\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3173713D-909A-4DD3-9DD4-1E171EB057EE\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4b4391e77a6bf24cba2ef1590e113d9b73b11039\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b9f58cdae6a364a3270fd6b6a46e0fd4f7f8ce32\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d2d3eb377a5d081bf2bed177d354a4f59b74da88\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/eac51d9daacd61dcc93333ff6a890cf3efc8c1c0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4b4391e77a6bf24cba2ef1590e113d9b73b11039\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b9f58cdae6a364a3270fd6b6a46e0fd4f7f8ce32\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d2d3eb377a5d081bf2bed177d354a4f59b74da88\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/eac51d9daacd61dcc93333ff6a890cf3efc8c1c0\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/eac51d9daacd61dcc93333ff6a890cf3efc8c1c0\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/d2d3eb377a5d081bf2bed177d354a4f59b74da88\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/b9f58cdae6a364a3270fd6b6a46e0fd4f7f8ce32\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/4b4391e77a6bf24cba2ef1590e113d9b73b11039\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T21:57:43.508Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-40913\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:05:56.112213Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:25.028Z\"}}], \"cna\": {\"title\": \"cachefiles: defer exposing anon_fd until after copy_to_user() succeeds\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"c8383054506c77b814489c09877b5db83fd4abf2\", \"lessThan\": \"eac51d9daacd61dcc93333ff6a890cf3efc8c1c0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c8383054506c77b814489c09877b5db83fd4abf2\", \"lessThan\": \"d2d3eb377a5d081bf2bed177d354a4f59b74da88\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c8383054506c77b814489c09877b5db83fd4abf2\", \"lessThan\": \"b9f58cdae6a364a3270fd6b6a46e0fd4f7f8ce32\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c8383054506c77b814489c09877b5db83fd4abf2\", \"lessThan\": \"4b4391e77a6bf24cba2ef1590e113d9b73b11039\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/cachefiles/ondemand.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.19\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.19\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.95\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.35\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/cachefiles/ondemand.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/eac51d9daacd61dcc93333ff6a890cf3efc8c1c0\"}, {\"url\": \"https://git.kernel.org/stable/c/d2d3eb377a5d081bf2bed177d354a4f59b74da88\"}, {\"url\": \"https://git.kernel.org/stable/c/b9f58cdae6a364a3270fd6b6a46e0fd4f7f8ce32\"}, {\"url\": \"https://git.kernel.org/stable/c/4b4391e77a6bf24cba2ef1590e113d9b73b11039\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncachefiles: defer exposing anon_fd until after copy_to_user() succeeds\\n\\nAfter installing the anonymous fd, we can now see it in userland and close\\nit. However, at this point we may not have gotten the reference count of\\nthe cache, but we will put it during colse fd, so this may cause a cache\\nUAF.\\n\\nSo grab the cache reference count before fd_install(). In addition, by\\nkernel convention, fd is taken over by the user land after fd_install(),\\nand the kernel should not call close_fd() after that, i.e., it should call\\nfd_install() after everything is ready, thus fd_install() is called after\\ncopy_to_user() succeeds.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.95\", \"versionStartIncluding\": \"5.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.35\", \"versionStartIncluding\": \"5.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.6\", \"versionStartIncluding\": \"5.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"5.19\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:22:15.067Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-40913\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:22:15.067Z\", \"dateReserved\": \"2024-07-12T12:17:45.581Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-12T12:24:57.363Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.