01 Record

CVE-2025-37954

smb: client: Avoid race in open_cached_dir with lease breaks

HighPUBLISHEDCNA: Linux

CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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02 Description

smb: client: Avoid race in open_cached_dir with lease breaks

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.36% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 30.4% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-15.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published: 2025-05-20 16:01Z1 YR AGO
Last updated: 2026-10-15 21:52Z13 DAYS AGO
Reserved: 2025-04-16
Assigning CNA: Linux
Record state: PUBLISHED
Severity: High (CVSS 7.5)
CNA CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses: No CWE assigned
Data version: 5.2
Document digest: 792f7ff0ad71268e1bda3b3779f18a41cbc84fc875ea9bd0a198d556786e709d

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux81ba10959970d15c388bf29866b01b62f387e6a3 to < 2ed98e89ebc2e1bc73534dc3c18cb7843a889ff9, 81ba10959970d15c388bf29866b01b62f387e6a3 to < 571dcf3d27b24800c171aea7b5e04ff06d10e2e9, 81ba10959970d15c388bf29866b01b62f387e6a3 to < 2407265dc32bc8cc45b62a612c2a214ba9038e8b, 81ba10959970d15c388bf29866b01b62f387e6a3 to < 3ca02e63edccb78ef3659bebc68579c7224a6ca2, 436be190fbf81e5d84040dabf9cb7be06a94dc5d, 6.5.10 to < 6.6, 6.6—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/2ed98e89ebc2e1bc73534dc3c18cb7843a889ff9
git.kernel.orghttps://git.kernel.org/stable/c/571dcf3d27b24800c171aea7b5e04ff06d10e2e9
git.kernel.orghttps://git.kernel.org/stable/c/2407265dc32bc8cc45b62a612c2a214ba9038e8b
git.kernel.orghttps://git.kernel.org/stable/c/3ca02e63edccb78ef3659bebc68579c7224a6ca2

07 Fixed in

Debian 13

linux
Fixed in 6.12.29-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.12.29-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.