CVE-2025-38549 (GCVE-0-2025-38549)

Vulnerability from cvelistv5 – Published: 2025-08-16 11:34 – Updated: 2026-05-11 21:30
VLAI
Title
efivarfs: Fix memory leak of efivarfs_fs_info in fs_context error paths
Summary
In the Linux kernel, the following vulnerability has been resolved: efivarfs: Fix memory leak of efivarfs_fs_info in fs_context error paths When processing mount options, efivarfs allocates efivarfs_fs_info (sfi) early in fs_context initialization. However, sfi is associated with the superblock and typically freed when the superblock is destroyed. If the fs_context is released (final put) before fill_super is called—such as on error paths or during reconfiguration—the sfi structure would leak, as ownership never transfers to the superblock. Implement the .free callback in efivarfs_context_ops to ensure any allocated sfi is properly freed if the fs_context is torn down before fill_super, preventing this memory leak.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5329aa5101f73c451bcd48deaf3f296685849d9c , < 816d36973467d1c9c08a48bdffe4675e219a2e84 (git)
Affected: 5329aa5101f73c451bcd48deaf3f296685849d9c , < e9fabe7036bb8be6071f39dc38605508f5f57b20 (git)
Affected: 5329aa5101f73c451bcd48deaf3f296685849d9c , < 64e135f1eaba0bbb0cdee859af3328c68d5b9789 (git)
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Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 6.12.40 , ≤ 6.12.* (semver)
Unaffected: 6.15.8 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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}



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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 confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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