01 Record

CVE-2024-50086

ksmbd: fix user-after-free from session log off

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 user-after-free from session log off

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

0.47% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 40.8% 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

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

2024-10-29 00:50Z2 YR AGO

Last updated

2026-08-05 11:41Z2 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

be8b8f752714c2a1aab487d6d825d97262e30f652c89362381d42c11f4d70651

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux0626e6641f6b467447c81dd7678a69c66f7746cf to < 0f62358ce85b2d4c949ef1b648be01b29cec667a, 0626e6641f6b467447c81dd7678a69c66f7746cf to < a9839c37fd813b432988f58a9d9dd59253d3eb2c, 0626e6641f6b467447c81dd7678a69c66f7746cf to < 5511999e9615e4318e9142d23b29bd1597befc08, 0626e6641f6b467447c81dd7678a69c66f7746cf to < ee371898b53a9b9b51c02d22a8c31bfb86d45f0d, 0626e6641f6b467447c81dd7678a69c66f7746cf to < 7aa8804c0b67b3cb263a472d17f2cb50d7f1a930, 5.15—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/0f62358ce85b2d4c949ef1b648be01b29cec667a
git.kernel.orghttps://git.kernel.org/stable/c/a9839c37fd813b432988f58a9d9dd59253d3eb2c
git.kernel.orghttps://git.kernel.org/stable/c/5511999e9615e4318e9142d23b29bd1597befc08
git.kernel.orghttps://git.kernel.org/stable/c/ee371898b53a9b9b51c02d22a8c31bfb86d45f0d
git.kernel.orghttps://git.kernel.org/stable/c/7aa8804c0b67b3cb263a472d17f2cb50d7f1a930
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.115-1

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

Debian 13

linux
Fixed in 6.11.5-1

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

Debian 14

linux
Fixed in 6.11.5-1

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