01 Record

CVE-2024-50286

ksmbd: fix slab-use-after-free in ksmbd_smb2_session_create

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

ksmbd: fix slab-use-after-free in ksmbd_smb2_session_create

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 ImpacttotalSuccessful exploitation gives total 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

0.67% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 51.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:L/AC:H/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

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

2024-11-19 01:30Z1 YR AGO

Last updated

2026-08-05 11:43Z2 MO AGO

Reserved

2024-10-21

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

Data version

5.2

Document digest

4b09d093b764a3d91f6de9bb9a02430522a38fb1488ba24a4ee6e3f393076ba9

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux0626e6641f6b467447c81dd7678a69c66f7746cf to < f56446ba5378d19e31040b548a14ee9a8f1500ea, 0626e6641f6b467447c81dd7678a69c66f7746cf to < e923503a56b3385b64ae492e3225e4623f560c5b, 0626e6641f6b467447c81dd7678a69c66f7746cf to < e7a2ad2044377853cf8c59528dac808a08a99c72, 0626e6641f6b467447c81dd7678a69c66f7746cf to < 0a77715db22611df50b178374c51e2ba0d58866e, 5.15—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/f56446ba5378d19e31040b548a14ee9a8f1500ea
git.kernel.orghttps://git.kernel.org/stable/c/e923503a56b3385b64ae492e3225e4623f560c5b
git.kernel.orghttps://git.kernel.org/stable/c/e7a2ad2044377853cf8c59528dac808a08a99c72
git.kernel.orghttps://git.kernel.org/stable/c/0a77715db22611df50b178374c51e2ba0d58866e
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.119-1

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

Debian 13

linux
Fixed in 6.11.9-1

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

Debian 14

linux
Fixed in 6.11.9-1

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