CVE-2026-45848 Details
Description
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.
A vulnerability in the Linux kernel's AppArmor module can lead to a NULL pointer dereference in the socket mediation process. This issue arises because the socket and its associated socket structure can be NULL during the setup or teardown phases, particularly with AF_UNIX sockets. If not properly handled, this can cause a system crash (an 'oops' error). The vulnerability affects several versions of the Linux kernel.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for upgrading the Linux kernel can be found in the official Linux kernel documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/00b67657535dfea56e84d11492f5c0f61d0af297 | kernel.org | Patch |
| https://git.kernel.org/stable/c/0dc19bca22606f7a61d5988408f74e3ae0ef3486 | kernel.org | Patch |
| https://git.kernel.org/stable/c/3852eb9a0392eb435c03dcb47d581bcfe6a9a95b | kernel.org | Patch |
| https://git.kernel.org/stable/c/5121b7283f1c46e4c06b88b1dda7b064429d77de | kernel.org | Patch |
| https://git.kernel.org/stable/c/68538ec34fcb4194c7961dc4eca6f5537fec8067 | kernel.org | Patch |
| https://git.kernel.org/stable/c/8a0ededbfcff74598f82f1d4b8ef9db28878b317 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c11b7c3280d000376e27ebfed17ec7046699eab4 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.17, < 5.10.252 >= 5.11, < 5.15.202 >= 5.16, < 6.1.165 >= 6.2, < 6.6.128 >= 6.7, < 6.12.75 >= 6.13, < 6.18.14 >= 6.19, < 6.19.4 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 25, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 27, 2026 | New CVE Received | kernel.org |