VulnerabilityModified
CVE-2025-21945
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_lock If smb_lock->zero_len has value, ->llist of smb_lock is not delete and flock is old one.
HIGH 7.8EPSS 0.51%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.51%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_lock If smb_lock->zero_len has value, ->llist of smb_lock is not delete and flock is old one. It will cause use-after-free on error handling routine.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.51% probability · 42th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/410ce35a2ed6d0e114132bba29af49b69880c8c7Patch
- https://git.kernel.org/stable/c/636e021646cf9b52ddfea7c809b018e91f2188cbPatch
- https://git.kernel.org/stable/c/84d2d1641b71dec326e8736a749b7ee76a9599fcPatch
- https://git.kernel.org/stable/c/8573571060ca466cbef2c6f03306b2cc7b883506Patch
- https://git.kernel.org/stable/c/a0609097fd10d618aed4864038393dd75131289ePatch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.