01 Record

CVE-2024-26936

ksmbd: validate request buffer size in smb2_allocate_rsp_buf()

HighPUBLISHEDCNA: Linux

CNA base score8.2 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

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02 Description

ksmbd: validate request buffer size in smb2_allocate_rsp_buf()

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

0.60% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 48.7% of scored records. A rank, not a probability.

NVD base score

7.8 (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:H/I:H/A:H

NVD analysis status

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

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

2024-05-01 05:26Z2 YR AGO

Last updated

2026-08-05 11:28Z2 MO AGO

Reserved

2024-02-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.2)

CNA CVSS vector

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

Weaknesses

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base

Data version

5.2

Document digest

e34cca100113dfc09004a417292176954f682b13fdab4d8c4742655ec3e4a8fe

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux0626e6641f6b467447c81dd7678a69c66f7746cf to < 8f3d0bf1d0c62b539d54c5b9108a845cff619b99, 0626e6641f6b467447c81dd7678a69c66f7746cf to < 21ff9d7d223c5c19cb4334009e4c0c83a2f4d674, 0626e6641f6b467447c81dd7678a69c66f7746cf to < 5c20b242d4fed73a93591e48bfd9772e2322fb11, 0626e6641f6b467447c81dd7678a69c66f7746cf to < 2c27a64a2bc47d9bfc7c3cf8be14be53b1ee7cb6, 0626e6641f6b467447c81dd7678a69c66f7746cf to < 17cf0c2794bdb6f39671265aa18aea5c22ee8c4a, 5.15—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/8f3d0bf1d0c62b539d54c5b9108a845cff619b99
git.kernel.orghttps://git.kernel.org/stable/c/21ff9d7d223c5c19cb4334009e4c0c83a2f4d674
git.kernel.orghttps://git.kernel.org/stable/c/5c20b242d4fed73a93591e48bfd9772e2322fb11
git.kernel.orghttps://git.kernel.org/stable/c/2c27a64a2bc47d9bfc7c3cf8be14be53b1ee7cb6
git.kernel.orghttps://git.kernel.org/stable/c/17cf0c2794bdb6f39671265aa18aea5c22ee8c4a

07 Fixed in

Debian 12

linux
Fixed in 6.1.90-1

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.