CVE-2022-50812 (GCVE-0-2022-50812)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:08 – Updated: 2025-12-30 12:08
VLAI?
Title
security: Restrict CONFIG_ZERO_CALL_USED_REGS to gcc or clang > 15.0.6
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8a4236456a3a402f6bb92aa7b75e7a3b4ef7a72c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0b202dfedb5aa2e7d07d849be33fa3a48c026926 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 21ca0bfa11bbb9a9207f5d2104f47d3d71b4616e (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d6a9fb87e9d18f3394a9845546bbe868efdccfd2 (git)
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    Linux Linux Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsecurity: Restrict CONFIG_ZERO_CALL_USED_REGS to gcc or clang \u003e 15.0.6\n\nA bad bug in clang\u0027s implementation of -fzero-call-used-regs can result\nin NULL pointer dereferences (see the links above the check for more\ninformation). Restrict CONFIG_CC_HAS_ZERO_CALL_USED_REGS to either a\nsupported GCC version or a clang newer than 15.0.6, which will catch\nboth a theoretical 15.0.7 and the upcoming 16.0.0, which will both have\nthe bug fixed."
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    "datePublished": "2025-12-30T12:08:29.434Z",
    "dateReserved": "2025-12-30T12:06:07.130Z",
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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