# CVE-2026-98387: linux: In the Linux kernel, the following vulnerability has been resolved:  s390/crypto: Fix skcipher_walk return code handl...

CVE-2026-98387 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-98387, released October 16, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-98387
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 14, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  s390/crypto: Fix skcipher_walk return code handling in aes_s390  The return codes from skcipher_walk_virt() were not properly checked before entering the processing loops in ecb_aes_crypt() and ctr_aes_crypt(). If skcipher_walk_virt() fails, the walk structure may be in an undefined state, and attempting to process data could lead to incorrect behavior or accessing uninitialized memory.  Add proper return code checking to ensure correct handling of the walk initialization and walk advance and eventually return to the caller with that return code.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.111-1 | [DEBIAN-CVE-2026-98387](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98387.md) | Oct 16, 2026 |
| Linux | linux Debian 14 | 7.2.7-1 | [DEBIAN-CVE-2026-98387](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98387.md) | Oct 16, 2026 |

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Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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