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.
from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before 2002ff745db64ac83ee1bb9ff78196d2d68bfdb3; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 builds before 38d91446630a20ce8c2a981810deea81fd61a3b5; from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before 638213f2e6ea52c06a25861616781338d154db35; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 builds before 2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7; from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before a63011c009ea79439b800a05602b880eb4adbb05; from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before acd5b09be98fd38b7392307880156fb0452a7276; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 builds before 1b995966c3ae5244751bdaee9bfe7e17567d4fbe; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 builds before 9a82dcd98b6e6e11cfd162410967951f12152528
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.
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