Unrated severityNVD Advisory· Published May 20, 2025· Updated Jan 2, 2026

smb: client: Avoid race in open_cached_dir with lease breaks

CVE-2025-37954

Description

In the Linux kernel, the following vulnerability has been resolved:

A pre-existing valid cfid returned from find_or_create_cached_dir might race with a lease break, meaning open_cached_dir doesn't consider it valid, and thinks it's newly-constructed. This leaks a dentry reference if the allocation occurs before the queued lease break work runs.

Avoid the race by extending holding the cfid_list_lock across find_or_create_cached_dir and when the result is checked.

Affected products

Linux/Linux Kernel Rtllm-fuzzy
osv-coords78 versions
pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-rt_debug&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-source-rt&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-syms-rt&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.6 pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6 pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP7 pkg:rpm/suse/kernel-coco_debug&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6 pkg:rpm/suse/kernel-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP6 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP7 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP6 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP7 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP6 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7 pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-livepatch-SLE15-SP6-RT_Update_11&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6 pkg:rpm/suse/kernel-livepatch-SLE15-SP6_Update_12&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6 pkg:rpm/suse/kernel-livepatch-SLE15-SP7-RT_Update_2&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7 pkg:rpm/suse/kernel-livepatch-SLE15-SP7_Update_2&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7 pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP6 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6 pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP7 pkg:rpm/suse/kernel-source-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP7 pkg:rpm/suse/kernel-syms-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7 pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6 pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7 pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6 pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7
< 6.4.0-150600.23.53.1+ 77 more
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150600.8.40.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150600.23.53.1.150600.12.24.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150600.10.39.1
- (no CPE)range: < 6.4.0-150600.10.39.1
- (no CPE)range: < 6.4.0-150600.8.40.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150600.10.39.1
- (no CPE)range: < 6.4.0-150600.8.40.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150600.10.39.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-150600.8.40.1
- (no CPE)range: < 6.4.0-150700.20.6.1
- (no CPE)range: < 6.4.0-15061.28.coco15sp6.1
- (no CPE)range: < 6.4.0-15061.28.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.53.1.150600.12.24.1
- (no CPE)range: < 6.4.0-150700.53.6.1.150700.17.6.1
- (no CPE)range: < 6.4.0-30.1.21.8
- (no CPE)range: < 6.4.0-30.1.21.8
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-30.1
- (no CPE)range: < 6.4.0-30.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-30.1
- (no CPE)range: < 6.4.0-30.1
- (no CPE)range: < 1-150600.1.3.2
- (no CPE)range: < 1-150600.13.3.1
- (no CPE)range: < 1-150700.1.5.1
- (no CPE)range: < 1-150700.15.3.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-150600.10.39.1
- (no CPE)range: < 6.4.0-33.1
- (no CPE)range: < 6.4.0-33.1
- (no CPE)range: < 6.4.0-150600.10.39.1
- (no CPE)range: < 6.4.0-150700.7.8.1
- (no CPE)range: < 6.4.0-150600.8.40.1
- (no CPE)range: < 6.4.0-150700.20.6.1
- (no CPE)range: < 6.4.0-15061.28.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-30.1
- (no CPE)range: < 6.4.0-30.1
- (no CPE)range: < 6.4.0-33.1
- (no CPE)range: < 6.4.0-33.1
- (no CPE)range: < 6.4.0-150600.10.39.1
- (no CPE)range: < 6.4.0-150700.7.8.1
- (no CPE)range: < 6.4.0-150600.8.40.1
- (no CPE)range: < 6.4.0-150700.20.6.1
- (no CPE)range: < 6.4.0-15061.28.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-150600.10.39.1
- (no CPE)range: < 6.4.0-150700.7.8.1
- (no CPE)range: < 6.4.0-150600.23.53.1
- (no CPE)range: < 6.4.0-150700.53.6.1
Linux/Linuxcpe-rescue
Range: 6.6

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

News mentions

No linked articles in our index yet.

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ransomware	0.000