Bug 2426230 (CVE-2022-50812) - CVE-2022-50812 kernel: security: Restrict CONFIG_ZERO_CALL_USED_REGS to gcc or clang > 15.0.6
Summary: CVE-2022-50812 kernel: security: Restrict CONFIG_ZERO_CALL_USED_REGS to gcc o...
Keywords:
Status: NEW
Alias: CVE-2022-50812
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-30 13:18 UTC by OSIDB Bzimport
Modified: 2026-06-29 18:19 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2025-12-30 13:18:05 UTC 
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.
Comment 1 Alexander B 2025-12-30 23:37:15 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123013-CVE-2022-50812-5eac@gregkh/T
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