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CVE-2023-53399

ksmbd: fix NULL pointer dereference in smb2_get_info_filesystem()

MEDIUM
5.5
CVSS Score
Published: September 18, 2025 at 01:33 PM UTC
Updated: August 5, 2026 at 10:24 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix NULL pointer dereference in smb2_get_info_filesystem() If share is , share->path is NULL and it cause NULL pointer dereference issue.

Affected

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

Linux Kernel· Linux
95%
5.15 ≤ v < 5.15.1115.15 ≤ v < 6.1.285.15 ≤ v < 6.2.155.15 ≤ v < 6.3.25.15 ≤ v < 6.45.16 ≤ v < 6.1.286.2 ≤ v < 6.2.156.3 ≤ v < 6.3.25.15626e6641f6b467447c81dd7678a69c66f7746cf
Vendor states this is fixed in 1636e09779f83e10e6ed57d91ef94abcefdd206b (fixed)
Vendor states this is fixed in 227eb2689b44d0d60da3839b146983e73435924c (fixed)
Vendor states this is fixed in 3ac00a2ab69b34189942afa9e862d5170cdcb018 (fixed)
Vendor states this is fixed in a70751dd7b60eab025e97e19b6b2477c6eaf2bbb (fixed)
Vendor states this is fixed in b35f6c031b87d9e51f141ff6de0ea59756a8e313 (fixed)
Vendor states this is fixed in 5.15 (unaffected)
Vendor states this is fixed in 5.15.111 (unaffected)
Vendor states this is fixed in 6.1.28 (unaffected)
Vendor states this is fixed in 6.2.15 (unaffected)
Vendor states this is fixed in 6.3.2 (unaffected)
Vendor states this is fixed in 6.4 (unaffected)

References (5)

Patch
Source: cverecord
https://git.kernel.org/stable/c/227eb2689b44d0d60da3839b146983e73435924c
Patch
Source: cverecord
https://git.kernel.org/stable/c/a70751dd7b60eab025e97e19b6b2477c6eaf2bbb
Patch
Source: cverecord
https://git.kernel.org/stable/c/b35f6c031b87d9e51f141ff6de0ea59756a8e313
Patch
Source: cverecord
https://git.kernel.org/stable/c/1636e09779f83e10e6ed57d91ef94abcefdd206b
Patch
Source: cverecord
https://git.kernel.org/stable/c/3ac00a2ab69b34189942afa9e862d5170cdcb018

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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