CVE-2025-39841

Advisory lineage Upstream: 0 Downstream: 55
Modified
Published: 19 Sept 2025, 15:26
Last modified:12 May 2026, 12:07

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 Sept 2025, 15:26
Published
Vulnerability first disclosed
12 May 2026, 12:07
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix buffer free/clear order in deferred receive path Fix a use-after-free window by correcting the buffer release sequence in the deferred receive path. The code freed the RQ buffer first and only then cleared the context pointer under the lock. Concurrent paths (e.g., ABTS and the repost path) also inspect and release the same pointer under the lock, so the old order could lead to double-free/UAF. Note that the repost path already uses the correct pattern: detach the pointer under the lock, then free it after dropping the lock. The deferred path should do the same.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 5%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • debian•debian_linux

    11.0

  • linux•linux

    ≥ 472e146d1cf3410a898b49834500fa9e33ac41a2, < ab34084f42ee06a9028d67c78feafb911d33d111 | ≥ 472e146d1cf3410a898b49834500fa9e33ac41a2, < baa39f6ad79d372a6ce0aa639fbb2f1578479f57 | ≥ 472e146d1cf3410a898b49834500fa9e33ac41a2, < 95b63d15fce5c54a73bbf195e1aacb5a75b128e2 | ≥ 472e146d1cf3410a898b49834500fa9e33ac41a2, < 55658c7501467ca9ef3bd4453dd920010db8bc13 | ≥ 472e146d1cf3410a898b49834500fa9e33ac41a2, < d96cc9a1b57725930c60b607423759d563b4d900 | ≥ 472e146d1cf3410a898b49834500fa9e33ac41a2, < 367cb5ffd8a8a4c85dc89f55e7fa7cc191425b11 | ≥ 472e146d1cf3410a898b49834500fa9e33ac41a2, < 897f64b01c1249ac730329b83f4f40bab71e86c7 | ≥ 472e146d1cf3410a898b49834500fa9e33ac41a2, < 9dba9a45c348e8460da97c450cddf70b2056deb3 | 5.1

  • linux•linux_kernel

    ≥ 5.1, < 5.4.299 | ≥ 5.5, < 5.10.243 | ≥ 5.11, < 5.15.192 | ≥ 5.16, < 6.1.151 | ≥ 6.2, < 6.6.105 | ≥ 6.7, < 6.12.46 | ≥ 6.13, < 6.16.6 | 6.17:rc1 | 6.17:rc2 | 6.17:rc3 | 6.17:rc4

References (12)