CVE-2024-49988

ksmbd: add refcnt to ksmbd_conn struct

MEDIUM
5.5
CVSS Score
Published: October 21, 2024 at 06:02 PM UTC
Updated: August 5, 2026 at 12:05 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add refcnt to ksmbd_conn struct When sending an oplock break request, opinfo->conn is used, But freed ->conn can be used on multichannel. This patch add a reference count to the ksmbd_conn struct so that it can be freed when it is no longer used.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 6.6.555.15 ≤ v < 6.10.145.15 ≤ v < 6.11.35.15 ≤ v < 6.125.15 ≤ v < 6.6.556.11 ≤ v < 6.11.36.7 ≤ v < 6.10.145.15626e6641f6b467447c81dd7678a69c66f7746cf
Vendor states this is fixed in 18f06bacc197d4ac9b518ad1c69999bc3d83e7aa (fixed)
Vendor states this is fixed in 9fd3cde4628bcd3549ab95061f2bab74d2ed4f3b (fixed)
Vendor states this is fixed in e9dac92f4482a382e8c0fe1bc243da5fc3526b0c (fixed)
Vendor states this is fixed in ee426bfb9d09b29987369b897fe9b6485ac2be27 (fixed)
Vendor states this is fixed in 5.15 (unaffected)
Vendor states this is fixed in 6.10.14 (unaffected)
Vendor states this is fixed in 6.11.3 (unaffected)
Vendor states this is fixed in 6.12 (unaffected)
Vendor states this is fixed in 6.6.55 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/18f06bacc197d4ac9b518ad1c69999bc3d83e7aa
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9fd3cde4628bcd3549ab95061f2bab74d2ed4f3b
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e9dac92f4482a382e8c0fe1bc243da5fc3526b0c
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ee426bfb9d09b29987369b897fe9b6485ac2be27

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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