Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before 2002ff745db64ac83ee1bb9ff78196d2d68bfdb3; affected 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before 38d91446630a20ce8c2a981810deea81fd61a3b5; affected 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before 638213f2e6ea52c06a25861616781338d154db35; affected 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before 2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7; affected 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before a63011c009ea79439b800a05602b880eb4adbb05; affected 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before acd5b09be98fd38b7392307880156fb0452a7276; affected 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before 1b995966c3ae5244751bdaee9bfe7e17567d4fbe; affected 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before 9a82dcd98b6e6e11cfd162410967951f12152528 |
| Linux / Linux | affected 2.6.23; unaffected 0 before 2.6.23; unaffected 5.10.266 through 5.10.*; unaffected 5.15.217 through 5.15.*; unaffected 6.1.184 through 6.1.*; unaffected 6.6.153 through 6.6.*; unaffected 6.12.105 through 6.12.*; unaffected 6.18.46 through 6.18.*; unaffected 7.1.10 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
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