CVE-2024-39497 (GCVE-0-2024-39497)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:20 – Updated: 2026-05-11 20:21
VLAI?
Title
drm/shmem-helper: Fix BUG_ON() on mmap(PROT_WRITE, MAP_PRIVATE)
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/shmem-helper: Fix BUG_ON() on mmap(PROT_WRITE, MAP_PRIVATE) Lack of check for copy-on-write (COW) mapping in drm_gem_shmem_mmap allows users to call mmap with PROT_WRITE and MAP_PRIVATE flag causing a kernel panic due to BUG_ON in vmf_insert_pfn_prot: BUG_ON((vma->vm_flags & VM_PFNMAP) && is_cow_mapping(vma->vm_flags)); Return -EINVAL early if COW mapping is detected. This bug affects all drm drivers using default shmem helpers. It can be reproduced by this simple example: void *ptr = mmap(0, size, PROT_WRITE, MAP_PRIVATE, fd, mmap_offset); ptr[0] = 0;
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2194a63a818db71065ebe09c8104f5f021ca4e7b , < a508a102edf8735adc9bb73d37dd13c38d1a1b10 (git)
Affected: 2194a63a818db71065ebe09c8104f5f021ca4e7b , < 3ae63a8c1685e16958560ec08d30defdc5b9cca0 (git)
Affected: 2194a63a818db71065ebe09c8104f5f021ca4e7b , < 2219e5f97244b79c276751a1167615b9714db1b0 (git)
Affected: 2194a63a818db71065ebe09c8104f5f021ca4e7b , < 1b4a8b89bf6787090b56424d269bf84ba00c3263 (git)
Affected: 2194a63a818db71065ebe09c8104f5f021ca4e7b , < 03c71c42809ef4b17f5d874cdb2d3bf40e847b86 (git)
Affected: 2194a63a818db71065ebe09c8104f5f021ca4e7b , < 39bc27bd688066a63e56f7f64ad34fae03fbe3b8 (git)
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Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.10.229 , ≤ 5.10.* (semver)
Unaffected: 5.15.169 , ≤ 5.15.* (semver)
Unaffected: 6.1.114 , ≤ 6.1.* (semver)
Unaffected: 6.6.35 , ≤ 6.6.* (semver)
Unaffected: 6.9.6 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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Se puede reproducir con este sencillo ejemplo: void *ptr = mmap(0, size, PROT_WRITE, MAP_PRIVATE, fd, mmap_offset); ptr[0] = 0;\"}],\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-617\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.2\",\"versionEndExcluding\":\"5.10.229\",\"matchCriteriaId\":\"122C6878-8F1A-4404-950D-DCF9437389BD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.169\",\"matchCriteriaId\":\"18BEDAD6-86F8-457C-952F-C35698B3D07F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.114\",\"matchCriteriaId\":\"10FD2B3E-C7D9-4A9C-BD64-41877EDF88EB\"},{\"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\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/03c71c42809ef4b17f5d874cdb2d3bf40e847b86\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1b4a8b89bf6787090b56424d269bf84ba00c3263\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2219e5f97244b79c276751a1167615b9714db1b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/39bc27bd688066a63e56f7f64ad34fae03fbe3b8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3ae63a8c1685e16958560ec08d30defdc5b9cca0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a508a102edf8735adc9bb73d37dd13c38d1a1b10\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/03c71c42809ef4b17f5d874cdb2d3bf40e847b86\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1b4a8b89bf6787090b56424d269bf84ba00c3263\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/39bc27bd688066a63e56f7f64ad34fae03fbe3b8\",\"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\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/1b4a8b89bf6787090b56424d269bf84ba00c3263\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/03c71c42809ef4b17f5d874cdb2d3bf40e847b86\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/39bc27bd688066a63e56f7f64ad34fae03fbe3b8\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T20:38:18.392Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-39497\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:07:23.056270Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:25.174Z\"}}], \"cna\": {\"title\": \"drm/shmem-helper: Fix BUG_ON() on mmap(PROT_WRITE, MAP_PRIVATE)\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2194a63a818db71065ebe09c8104f5f021ca4e7b\", \"lessThan\": \"a508a102edf8735adc9bb73d37dd13c38d1a1b10\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2194a63a818db71065ebe09c8104f5f021ca4e7b\", \"lessThan\": \"3ae63a8c1685e16958560ec08d30defdc5b9cca0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2194a63a818db71065ebe09c8104f5f021ca4e7b\", \"lessThan\": \"2219e5f97244b79c276751a1167615b9714db1b0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2194a63a818db71065ebe09c8104f5f021ca4e7b\", \"lessThan\": \"1b4a8b89bf6787090b56424d269bf84ba00c3263\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2194a63a818db71065ebe09c8104f5f021ca4e7b\", \"lessThan\": \"03c71c42809ef4b17f5d874cdb2d3bf40e847b86\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2194a63a818db71065ebe09c8104f5f021ca4e7b\", \"lessThan\": \"39bc27bd688066a63e56f7f64ad34fae03fbe3b8\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/gpu/drm/drm_gem_shmem_helper.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.2\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.2\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.229\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.169\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.114\", \"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\": [\"drivers/gpu/drm/drm_gem_shmem_helper.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/a508a102edf8735adc9bb73d37dd13c38d1a1b10\"}, {\"url\": \"https://git.kernel.org/stable/c/3ae63a8c1685e16958560ec08d30defdc5b9cca0\"}, {\"url\": \"https://git.kernel.org/stable/c/2219e5f97244b79c276751a1167615b9714db1b0\"}, {\"url\": \"https://git.kernel.org/stable/c/1b4a8b89bf6787090b56424d269bf84ba00c3263\"}, {\"url\": \"https://git.kernel.org/stable/c/03c71c42809ef4b17f5d874cdb2d3bf40e847b86\"}, {\"url\": \"https://git.kernel.org/stable/c/39bc27bd688066a63e56f7f64ad34fae03fbe3b8\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/shmem-helper: Fix BUG_ON() on mmap(PROT_WRITE, MAP_PRIVATE)\\n\\nLack of check for copy-on-write (COW) mapping in drm_gem_shmem_mmap\\nallows users to call mmap with PROT_WRITE and MAP_PRIVATE flag\\ncausing a kernel panic due to BUG_ON in vmf_insert_pfn_prot:\\nBUG_ON((vma-\u003evm_flags \u0026 VM_PFNMAP) \u0026\u0026 is_cow_mapping(vma-\u003evm_flags));\\n\\nReturn -EINVAL early if COW mapping is detected.\\n\\nThis bug affects all drm drivers using default shmem helpers.\\nIt can be reproduced by this simple example:\\nvoid *ptr = mmap(0, size, PROT_WRITE, MAP_PRIVATE, fd, mmap_offset);\\nptr[0] = 0;\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.229\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.169\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.114\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.35\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.6\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"5.2\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:17:04.655Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-39497\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T20:38:18.392Z\", \"dateReserved\": \"2024-06-25T14:23:23.751Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-12T12:20:32.330Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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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.