01 Record

CVE-2024-35865

smb: client: fix potential UAF in smb2_is_valid_oplock_break()

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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02 Description

smb: client: fix potential UAF in smb2_is_valid_oplock_break()

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.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
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

0.63% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 49.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Low. 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

2024-05-19 08:34Z2 YR AGO

Last updated

2026-08-05 11:30Z2 MO AGO

Reserved

2024-05-17

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

CWE-416Use After FreeVariant
CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

5b1b7be44be22d73d6854bfece087672e34630325e2eb0177801e3cc1cafc1e3

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux7f48558e6489d032b1584b0cc9ac4bb11072c034 to < a710ef9e974f18232d2b9b19c90eda1a1167b2d4, 7f48558e6489d032b1584b0cc9ac4bb11072c034 to < 84488466b7a69570bdbf76dd9576847ab97d54e7, 7f48558e6489d032b1584b0cc9ac4bb11072c034 to < 21fed37d2bdcde33453faf61d3d4d96c355f04bd, 7f48558e6489d032b1584b0cc9ac4bb11072c034 to < 3dba0e5276f131e36d6d8043191d856f49238628, 7f48558e6489d032b1584b0cc9ac4bb11072c034 to < 22863485a4626ec6ecf297f4cc0aef709bc862e4, a67172a013953664b1dad03c648200c70b90506c, 3.12.48 to < 3.13, 3.13—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/a710ef9e974f18232d2b9b19c90eda1a1167b2d4
git.kernel.orghttps://git.kernel.org/stable/c/84488466b7a69570bdbf76dd9576847ab97d54e7
git.kernel.orghttps://git.kernel.org/stable/c/21fed37d2bdcde33453faf61d3d4d96c355f04bd
git.kernel.orghttps://git.kernel.org/stable/c/3dba0e5276f131e36d6d8043191d856f49238628
git.kernel.orghttps://git.kernel.org/stable/c/22863485a4626ec6ecf297f4cc0aef709bc862e4

07 Fixed in

Debian 12

linux
Fixed in 6.1.85-1

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

Debian 13

linux
Fixed in 6.8.9-1

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

Debian 14

linux
Fixed in 6.8.9-1

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