CVE-2024-50036 (GCVE-0-2024-50036)

Vulnerability from cvelistv5 – Published: 2024-10-21 19:39 – Updated: 2025-11-03 22:24
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: do not delay dst_entries_add() in dst_release() dst_entries_add() uses per-cpu data that might be freed at netns dismantle from ip6_route_net_exit() calling dst_entries_destroy() Before ip6_route_net_exit() can be called, we release all the dsts associated with this netns, via calls to dst_release(), which waits an rcu grace period before calling dst_destroy() dst_entries_add() use in dst_destroy() is racy, because dst_entries_destroy() could have been called already. Decrementing the number of dsts must happen sooner. Notes: 1) in CONFIG_XFRM case, dst_destroy() can call dst_release_immediate(child), this might also cause UAF if the child does not have DST_NOCOUNT set. IPSEC maintainers might take a look and see how to address this. 2) There is also discussion about removing this count of dst, which might happen in future kernels.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f88649721268999bdff09777847080a52004f691 , < 547087307bc19417b4f2bc85ba9664a3e8db5a6a (git)
Affected: f88649721268999bdff09777847080a52004f691 , < e3915f028b1f1c37e87542e5aadd33728c259d96 (git)
Affected: f88649721268999bdff09777847080a52004f691 , < a60db84f772fc3a906c6c4072f9207579c41166f (git)
Affected: f88649721268999bdff09777847080a52004f691 , < eae7435b48ffc8e9be0ff9cfeae40af479a609dd (git)
Affected: f88649721268999bdff09777847080a52004f691 , < 3c7c918ec0aa3555372c5a57f18780b7a96c5cfc (git)
Affected: f88649721268999bdff09777847080a52004f691 , < ac888d58869bb99753e7652be19a151df9ecb35d (git)
Affected: 86e48c03d774e01ccd71ecba4fc4b5c2bc0b5b41 (git)
Affected: 591b1e1bb40152e22cee757f493046a0ca946bf8 (git)
Affected: df90819dafcd6b97fc665f63a15752a570e227a2 (git)
Affected: 9a4fe697023dbe6c25caa1f8b2153af869a29bd2 (git)
Create a notification for this product.
    Linux Linux Affected: 3.16
Unaffected: 0 , < 3.16 (semver)
Unaffected: 5.10.230 , ≤ 5.10.* (semver)
Unaffected: 5.15.172 , ≤ 5.15.* (semver)
Unaffected: 6.1.117 , ≤ 6.1.* (semver)
Unaffected: 6.6.57 , ≤ 6.6.* (semver)
Unaffected: 6.11.4 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
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La disminuci\u00f3n del n\u00famero de dst debe ocurrir antes. Notas: 1) en el caso de CONFIG_XFRM, dst_destroy() puede llamar a dst_release_immediate(child), lo que tambi\u00e9n podr\u00eda causar UAF si el hijo no tiene DST_NOCOUNT configurado. Los encargados del mantenimiento de IPSEC podr\u00edan echar un vistazo y ver c\u00f3mo solucionar esto. 2) Tambi\u00e9n se est\u00e1 discutiendo sobre la eliminaci\u00f3n de este recuento de dst, lo que podr\u00eda suceder en kernels futuros.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.10.50\",\"versionEndExcluding\":\"3.11\",\"matchCriteriaId\":\"EB008871-978A-402A-8407-15291079DC44\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.12.26\",\"versionEndExcluding\":\"3.13\",\"matchCriteriaId\":\"597B9ABF-E2FF-405B-8226-0BD990181032\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.14.14\",\"versionEndExcluding\":\"3.15\",\"matchCriteriaId\":\"6241E34F-0DAB-4BE0-AD33-1BEEDA5841C9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.15.7\",\"versionEndExcluding\":\"3.16\",\"matchCriteriaId\":\"F88CDBE1-4ECE-4BE4-B2A6-7E814D3EA822\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.16\",\"versionEndExcluding\":\"6.6.57\",\"matchCriteriaId\":\"8D4764C3-4502-4F9B-8704-85262723C867\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.11.4\",\"matchCriteriaId\":\"AA84D336-CE9A-4535-B901-1AD77EC17C34\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F361E1D-580F-4A2D-A509-7615F73167A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3c7c918ec0aa3555372c5a57f18780b7a96c5cfc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/547087307bc19417b4f2bc85ba9664a3e8db5a6a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a60db84f772fc3a906c6c4072f9207579c41166f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ac888d58869bb99753e7652be19a151df9ecb35d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e3915f028b1f1c37e87542e5aadd33728c259d96\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eae7435b48ffc8e9be0ff9cfeae40af479a609dd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"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": {
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{\"url\": \"https://git.kernel.org/stable/c/a60db84f772fc3a906c6c4072f9207579c41166f\"}, {\"url\": \"https://git.kernel.org/stable/c/eae7435b48ffc8e9be0ff9cfeae40af479a609dd\"}, {\"url\": \"https://git.kernel.org/stable/c/3c7c918ec0aa3555372c5a57f18780b7a96c5cfc\"}, {\"url\": \"https://git.kernel.org/stable/c/ac888d58869bb99753e7652be19a151df9ecb35d\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: do not delay dst_entries_add() in dst_release()\\n\\ndst_entries_add() uses per-cpu data that might be freed at netns\\ndismantle from ip6_route_net_exit() calling dst_entries_destroy()\\n\\nBefore ip6_route_net_exit() can be called, we release all\\nthe dsts associated with this netns, via calls to dst_release(),\\nwhich waits an rcu grace period before calling dst_destroy()\\n\\ndst_entries_add() use in dst_destroy() is racy, because\\ndst_entries_destroy() 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      "cveMetadata": "{\"cveId\": \"CVE-2024-50036\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T22:24:42.427Z\", \"dateReserved\": \"2024-10-21T12:17:06.070Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T19:39:37.135Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

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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.