CVE-2025-39885 — Improper Locking in Linux
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 94.91%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 23
Latest updateApr 13
Description
In the Linux kernel, the following vulnerability has been resolved:
ocfs2: fix recursive semaphore deadlock in fiemap call
syzbot detected a OCFS2 hang due to a recursive semaphore on a
FS_IOC_FIEMAP of the extent list on a specially crafted mmap file.
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages3 packages
▶CVEListV5linux/linux00dc417fa3e763345b34ccb6034d72de76eea0a1 — 16e518ca84dfe860c20a62f3615e14e8af0ace57+8
Also affects: Debian Linux 11.0
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-g7xh-hw6g-xcpw: In the Linux kernel, the following vulnerability has been resolved:
ocfs2: fix recursive semaphore deadlock in fiemap call
syzbot detected a OCFS2 h↗2025-09-23
OSV▶
CVE-2025-39885: In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix recursive semaphore deadlock in fiemap call syzbot detected a OCFS2 han↗2025-09-23