CVE-2025-39841

critical · 9.8

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.

9.8

CVSS

0.5%

EPSS (exploit prob.)

40th

EPSS percentile

2025-09-19

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-787

Affected products

Vendor	Product	Affected versions
linux	linux_kernel	>= 5.1, < 5.4.299
linux	linux_kernel	>= 5.5, < 5.10.243
linux	linux_kernel	>= 5.11, < 5.15.192
linux	linux_kernel	>= 5.16, < 6.1.151
linux	linux_kernel	>= 6.2, < 6.6.105
linux	linux_kernel	>= 6.7, < 6.12.46
linux	linux_kernel	>= 6.13, < 6.16.6
linux	linux_kernel	6.17
linux	linux_kernel	6.17
linux	linux_kernel	6.17
linux	linux_kernel	6.17
debian	debian_linux	11.0

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-39841