CVE-2026-45848

Summary

In the Linux kernel, the following vulnerability has been resolved:

apparmor: fix NULL sock in aa_sock_file_perm

Deal with the potential that sock and sock-sk can be NULL during socket setup or teardown. This could lead to an oops. The fix for NULL pointer dereference in __unix_needs_revalidation shows this is at least possible for af_unix sockets. While the fix for af_unix sockets applies for newer mediation this is still the fall back path for older af_unix mediation and other sockets, so ensure it is covered.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux56974a6fcfef69ee0825bd66ed13e92070ac5224 < 68538ec34fcb4194c7961dc4eca6f5537fec8067affected
LinuxLinux56974a6fcfef69ee0825bd66ed13e92070ac5224 < 5121b7283f1c46e4c06b88b1dda7b064429d77deaffected
LinuxLinux56974a6fcfef69ee0825bd66ed13e92070ac5224 < c11b7c3280d000376e27ebfed17ec7046699eab4affected
LinuxLinux56974a6fcfef69ee0825bd66ed13e92070ac5224 < 0dc19bca22606f7a61d5988408f74e3ae0ef3486affected
LinuxLinux56974a6fcfef69ee0825bd66ed13e92070ac5224 < 3852eb9a0392eb435c03dcb47d581bcfe6a9a95baffected
LinuxLinux56974a6fcfef69ee0825bd66ed13e92070ac5224 < ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835affected
LinuxLinux56974a6fcfef69ee0825bd66ed13e92070ac5224 < 8a0ededbfcff74598f82f1d4b8ef9db28878b317affected
LinuxLinux56974a6fcfef69ee0825bd66ed13e92070ac5224 < 00b67657535dfea56e84d11492f5c0f61d0af297affected
LinuxLinux4.17affected
LinuxLinux0 < 4.17unaffected
LinuxLinux5.10.252 <= 5.10.*unaffected
LinuxLinux5.15.202 <= 5.15.*unaffected
LinuxLinux6.1.165 <= 6.1.*unaffected
LinuxLinux6.6.128 <= 6.6.*unaffected
LinuxLinux6.12.75 <= 6.12.*unaffected
LinuxLinux6.18.14 <= 6.18.*unaffected
LinuxLinux6.19.4 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References