CVE-2026-43463

MEDIUM EPSS 1.7%
Published May 8, 20261mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 8, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc, afs: Fix missing error pointer check after rxrpc_kernel_lookup_peer() rxrpc_kernel_lookup_peer() can also return error pointers in addition to NULL, so just checking for NULL is not sufficient. Fix this by: (1) Changing rxrpc_kernel_lookup_peer() to return -ENOMEM rather than NULL on allocation failure. (2) Making the callers in afs use IS_ERR() and PTR_ERR() to pass on the error code returned.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
1.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥6.7.3  –  <6.8
linuxlinux_kernel*≥6.8  –  <6.18.19
linuxlinux_kernel*≥6.19  –  <6.19.9
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/4245a79003adf30e67f8e9060915bd05cb31d142
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/54331c5dcc6d97683d7ca2788e7ef9c9505e1477
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d55fa7cd4b19ba91b34b307d769c149e56ad0a75
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/4245a79003adf30e67f8e9060915bd05cb31d142
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/54331c5dcc6d97683d7ca2788e7ef9c9505e1477
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d55fa7cd4b19ba91b34b307d769c149e56ad0a75
    Patch