# CVE-2026-43463: linux: In the Linux kernel, the following vulnerability has been resolved:  rxrpc, afs: Fix missing error pointer check afte...

CVE-2026-43463 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-43463, released May 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-43463
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0011
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 8, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.115-2 | [DEBIAN-CVE-2026-43463](https://patchblox.com/security/data/fix/linux/debian-cve-2026-43463.md) | May 15, 2026 |
| Linux | linux Debian 14 | 6.19.10-1 | [DEBIAN-CVE-2026-43463](https://patchblox.com/security/data/fix/linux/debian-cve-2026-43463.md) | May 15, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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