Description
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.
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 < 2002ff745db64ac83ee1bb9ff78196d2d68bfdb3affected55fcf09b3fe4325c9395ebbb0322a547a157ebc7 to < 38d91446630a20ce8c2a981810deea81fd61a3b5affected55fcf09b3fe4325c9395ebbb0322a547a157ebc7 to < 638213f2e6ea52c06a25861616781338d154db35affected55fcf09b3fe4325c9395ebbb0322a547a157ebc7 to < 2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7affected55fcf09b3fe4325c9395ebbb0322a547a157ebc7 to < a63011c009ea79439b800a05602b880eb4adbb05affected55fcf09b3fe4325c9395ebbb0322a547a157ebc7 to < acd5b09be98fd38b7392307880156fb0452a7276affected55fcf09b3fe4325c9395ebbb0322a547a157ebc7 to < 1b995966c3ae5244751bdaee9bfe7e17567d4fbeaffected55fcf09b3fe4325c9395ebbb0322a547a157ebc7 to < 9a82dcd98b6e6e11cfd162410967951f12152528affected
Linux Linux
Default version status: affected
2.6.23affected0 to < 2.6.23unaffected5.10.266 to ≤ 5.10.*unaffected5.15.217 to ≤ 5.15.*unaffected6.1.184 to ≤ 6.1.*unaffected6.6.153 to ≤ 6.6.*unaffected6.12.105 to ≤ 6.12.*unaffected6.18.46 to ≤ 6.18.*unaffected7.1.10 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/2002ff745db64ac83ee1bb9ff78196d2d68bfdb3 ↗
- https://git.kernel.org/stable/c/38d91446630a20ce8c2a981810deea81fd61a3b5 ↗
- https://git.kernel.org/stable/c/638213f2e6ea52c06a25861616781338d154db35 ↗
- https://git.kernel.org/stable/c/2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7 ↗
- https://git.kernel.org/stable/c/a63011c009ea79439b800a05602b880eb4adbb05 ↗
- https://git.kernel.org/stable/c/acd5b09be98fd38b7392307880156fb0452a7276 ↗
- https://git.kernel.org/stable/c/1b995966c3ae5244751bdaee9bfe7e17567d4fbe ↗
- https://git.kernel.org/stable/c/9a82dcd98b6e6e11cfd162410967951f12152528 ↗