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CVE-2026-80757 (GCVE-0-2026-80757)

Vulnerability from cvelistv5 – Published: 2026-09-03 08:26 – Updated: 2026-09-03 08:26
VLAI
Title
selinux: reject a class permission count below its inherited common
Summary
In the Linux kernel, the following vulnerability has been resolved: selinux: reject a class permission count below its inherited common security_get_permissions() maps an inherited common's permissions into an array sized by the class's own permissions.nprim, but class_read() takes that nprim verbatim from the policy image and never checks that it covers the common. A class that inherits a common of N permissions while declaring a smaller nprim is accepted, and on load the common's permissions are written past the class-sized array -- an out-of-bounds heap write. Reject a class whose permission count is below its inherited common's. Well-formed policies, where the class count already includes the inherited permissions, are unaffected.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 , < 2002ff745db64ac83ee1bb9ff78196d2d68bfdb3 (git)
Affected: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 , < 38d91446630a20ce8c2a981810deea81fd61a3b5 (git)
Affected: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 , < 638213f2e6ea52c06a25861616781338d154db35 (git)
Affected: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 , < 2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7 (git)
Affected: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 , < a63011c009ea79439b800a05602b880eb4adbb05 (git)
Affected: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 , < acd5b09be98fd38b7392307880156fb0452a7276 (git)
Affected: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 , < 1b995966c3ae5244751bdaee9bfe7e17567d4fbe (git)
Affected: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 , < 9a82dcd98b6e6e11cfd162410967951f12152528 (git)
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Linux Linux Affected: 2.6.23
Unaffected: 0 , < 2.6.23 (semver)
Unaffected: 5.10.266 , ≤ 5.10.* (semver)
Unaffected: 5.15.217 , ≤ 5.15.* (semver)
Unaffected: 6.1.184 , ≤ 6.1.* (semver)
Unaffected: 6.6.153 , ≤ 6.6.* (semver)
Unaffected: 6.12.105 , ≤ 6.12.* (semver)
Unaffected: 6.18.46 , ≤ 6.18.* (semver)
Unaffected: 7.1.10 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: reject a class permission count below its inherited common\n\nsecurity_get_permissions() maps an inherited common\u0027s permissions into\nan array sized by the class\u0027s own permissions.nprim, but class_read()\ntakes that nprim verbatim from the policy image and never checks that it\ncovers the common.  A class that inherits a common of N permissions while\ndeclaring a smaller nprim is accepted, and on load the common\u0027s\npermissions are written past the class-sized array -- an out-of-bounds\nheap write.\n\nReject a class whose permission count is below its inherited common\u0027s.\nWell-formed policies, where the class count already includes the\ninherited permissions, are unaffected."
        }
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    "dateReserved": "2026-08-26T14:34:25.791Z",
    "dateUpdated": "2026-09-03T08:26:35.005Z",
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A class that inherits a common of N permissions while\\ndeclaring a smaller nprim is accepted, and on load the common\u0027s\\npermissions are written past the class-sized array -- an out-of-bounds\\nheap write.\\n\\nReject a class whose permission count is below its inherited common\u0027s.\\nWell-formed policies, where the class count already includes the\\ninherited permissions, are unaffected.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"security/selinux/ss/policydb.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"55fcf09b3fe4325c9395ebbb0322a547a157ebc7\",\"lessThan\":\"2002ff745db64ac83ee1bb9ff78196d2d68bfdb3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"55fcf09b3fe4325c9395ebbb0322a547a157ebc7\",\"lessThan\":\"38d91446630a20ce8c2a981810deea81fd61a3b5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"55fcf09b3fe4325c9395ebbb0322a547a157ebc7\",\"lessThan\":\"638213f2e6ea52c06a25861616781338d154db35\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"55fcf09b3fe4325c9395ebbb0322a547a157ebc7\",\"lessThan\":\"2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"55fcf09b3fe4325c9395ebbb0322a547a157ebc7\",\"lessThan\":\"a63011c009ea79439b800a05602b880eb4adbb05\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"55fcf09b3fe4325c9395ebbb0322a547a157ebc7\",\"lessThan\":\"acd5b09be98fd38b7392307880156fb0452a7276\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"55fcf09b3fe4325c9395ebbb0322a547a157ebc7\",\"lessThan\":\"1b995966c3ae5244751bdaee9bfe7e17567d4fbe\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"55fcf09b3fe4325c9395ebbb0322a547a157ebc7\",\"lessThan\":\"9a82dcd98b6e6e11cfd162410967951f12152528\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"security/selinux/ss/policydb.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.23\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.23\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.266\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.217\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.184\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.153\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.105\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.46\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.10\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1b995966c3ae5244751bdaee9bfe7e17567d4fbe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2002ff745db64ac83ee1bb9ff78196d2d68bfdb3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/38d91446630a20ce8c2a981810deea81fd61a3b5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/638213f2e6ea52c06a25861616781338d154db35\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9a82dcd98b6e6e11cfd162410967951f12152528\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a63011c009ea79439b800a05602b880eb4adbb05\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/acd5b09be98fd38b7392307880156fb0452a7276\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}



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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.