VulnerabilityModified

CVE-2025-21944

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix bug on trap in smb2_lock If lock count is greater than 1, flags could be old value.

MEDIUM 5.5EPSS 0.15%

Does this matter?

Lower severity and a low EPSS score (0.15%). Track it; it rarely justifies an emergency change on its own.

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix bug on trap in smb2_lock If lock count is greater than 1, flags could be old value. It should be checked with flags of smb_lock, not flags. It will cause bug-on trap from locks_free_lock in error handling routine.

CVSS 3.1: 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.15% probability · 5th percentile
CISA KEV: Not listed
Weakness: CWE-667
Affected: linux/linux kernel
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

References

https://git.kernel.org/stable/c/11e0e74e14f1832a95092f2c98ed3b99f57797eePatch
https://git.kernel.org/stable/c/2b70e3ac79eacbdf32571f7af48dd81cdd957ca8Patch
https://git.kernel.org/stable/c/8994f0ce8259f812b4f4a681d8298c6ff682efaaPatch
https://git.kernel.org/stable/c/dbcd7fdd86f77529210fe8978154a81cd479844cPatch
https://git.kernel.org/stable/c/e26e2d2e15daf1ab33e0135caf2304a0cfa2744bPatch
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.