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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-80755

selinux: reject a permission value exceeding the class permission count

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: selinux: reject a permission value exceeding the class permission count perm_read() bounds a permission value by SEL_VEC_MAX but never by the nprim of the owning class or common, which is taken verbatim from the policy image. security_get_permissions() then writes perms[value - 1] into an nprim-sized kcalloc() array, so a class declaring fewer permissions than its largest permission value drives an out-of-bounds heap write. The top-level symbol tables are validated this way; the nested per-class permission table is not. Reject a permission whose value exceeds nprim, which is already set when perm_read() runs. Well-formed policies are unaffected. [PM: tweak comment for line length]

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 to < 766051751cfb90fc9c29c30c2943b0f24eda9594affected
  • 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 to < 9a1bd9fd1326655dfc31b18ca92ea8433cb31204affected
  • 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 to < 6c2ab7c4549f4f2305848df834e784651dbf1676affected
  • 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 to < dfc59a062c386d3d4415ecdab781065a645f33ccaffected
  • 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 to < a7f3d4f22d920dc3c7d75f02ece0f7bf2c58437eaffected
  • 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 to < d14b5d0e97fccd27974fedc03b903408872907fdaffected

Linux Linux

Default version status: affected

  • 2.6.23affected
  • 0 to < 2.6.23unaffected
  • 6.1.191 to ≤ 6.1.*unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.12.108 to ≤ 6.12.*unaffected
  • 6.18.49 to ≤ 6.18.*unaffected
  • 7.1.13 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References