CVE-2025-21672
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-21672
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21672.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-21672
- Downstream
- Published
- 2025-01-31T11:25:35Z
- Modified
- 2025-10-10T05:42:51.418682Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- afs: Fix merge preference rule failure condition
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
afs: Fix merge preference rule failure condition
syzbot reported a lock held when returning to userspace[1]. This is because if argc is less than 0 and the function returns directly, the held inode lock is not released.
Fix this by store the error in ret and jump to done to clean up instead of returning directly.
[dh: Modified Lizhi Xu's original patch to make it honour the error code from afssplitstring()]
[1] WARNING: lock held when returning to user space!
6.13.0-rc3-syzkaller-00209-g499551201b5f #0 Not tainted
syz-executor133/5823 is leaving the kernel with locks still held! 1 lock held by syz-executor133/5823: #0: ffff888071cffc00 (&sb->stype->imutexkey#9){++++}-{4:4}, at: inodelock include/linux/fs.h:818 [inline] #0: ffff888071cffc00 (&sb->stype->imutexkey#9){++++}-{4:4}, at: afsprocaddrprefswrite+0x2bb/0x14e0 fs/afs/addrprefs.c:388
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedf94f70d39cc2d54079ebae934862198516315db2Fixed22be1d90a6211c88dd093b25d1f3aa974d0d9f9d
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedf94f70d39cc2d54079ebae934862198516315db2Fixed17a4fde81d3a7478d97d15304a6d61094a10c2e3