CVE-2025-40050 (GCVE-0-2025-40050)

Vulnerability from cvelistv5 – Published: 2025-10-28 11:48 – Updated: 2025-12-01 06:16
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Skip scalar adjustment for BPF_NEG if dst is a pointer In check_alu_op(), the verifier currently calls check_reg_arg() and adjust_scalar_min_max_vals() unconditionally for BPF_NEG operations. However, if the destination register holds a pointer, these scalar adjustments are unnecessary and potentially incorrect. This patch adds a check to skip the adjustment logic when the destination register contains a pointer.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: aced132599b3c8884c050218d4c48eef203678f6 , < b9ef4963227246b9222e1559ddeec8e7af63e6c6 (git)
Affected: aced132599b3c8884c050218d4c48eef203678f6 , < 34904582b502a86fdb4d7984b12cacd2faabbe0d (git)
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    Linux Linux Affected: 6.17
Unaffected: 0 , < 6.17 (semver)
Unaffected: 6.17.3 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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        "dateUpdated": "2025-12-01T06:16:56.505Z",
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    "cveId": "CVE-2025-40050",
    "datePublished": "2025-10-28T11:48:26.654Z",
    "dateReserved": "2025-04-16T07:20:57.157Z",
    "dateUpdated": "2025-12-01T06:16:56.505Z",
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  }
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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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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