# CVE-2022-50812: linux: In the Linux kernel, the following vulnerability has been resolved:  security: Restrict CONFIG_ZERO_CALL_USED_REGS to...

CVE-2022-50812 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50812, released December 30, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-50812
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 30, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  security: Restrict CONFIG_ZERO_CALL_USED_REGS to gcc or clang > 15.0.6  A bad bug in clang's implementation of -fzero-call-used-regs can result in NULL pointer dereferences (see the links above the check for more information). Restrict CONFIG_CC_HAS_ZERO_CALL_USED_REGS to either a supported GCC version or a clang newer than 15.0.6, which will catch both a theoretical 15.0.7 and the upcoming 16.0.0, which will both have the bug fixed.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [DEBIAN-CVE-2022-50812](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50812.md) | Dec 30, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [DEBIAN-CVE-2022-50812](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50812.md) | Dec 30, 2025 |
| Linux | linux Debian 14 | 6.1.4-1 | [DEBIAN-CVE-2022-50812](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50812.md) | Dec 30, 2025 |

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