CVE-2023-52441

ksmbd: fix out of bounds in init_smb2_rsp_hdr()

HIGH
7.8
CVSS Score
Published: February 21, 2024 at 07:21 AM UTC
Updated: August 15, 2026 at 01:17 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out of bounds in init_smb2_rsp_hdr() If client send smb2 negotiate request and then send smb1 negotiate request, init_smb2_rsp_hdr is called for smb1 negotiate request since need_neg is set to false. This patch ignore smb1 packets after ->need_neg is set to false.

Affected

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

v ≥ 6.2.95.15.0 ≤ v < 5.15.1455.15.105 ≤ v < 5.15.1455.16.0 ≤ v < 6.1.536.1.22 ≤ v < 6.1.536.2.0 ≤ v < 6.4.166.2.9 ≤ v < 6.36.3 ≤ v < 6.4.166.3 ≤ v < 6.50b3ec5671ac06829ccebdaeec05acedfec327f4239b291b86b5988bf8753c3874d5c773399d09b965.15.10551a8534c0f35c0401e45f1055f914729cad98bf96.1.226.2.96.3cc32cd98a0aee4cc3eb611cbce11795b1aaa738a
Vendor states this is fixed in 330d900620dfc9893011d725b3620cd2ee0bc2bc (fixed)
Vendor states this is fixed in 536bb492d39bb6c080c92f31e8a55fe9934f452b (fixed)
Vendor states this is fixed in 5c0df9d30c289d6b9d7d44e2a450de2f8e3cf40b (fixed)
Vendor states this is fixed in aa669ef229ae8dd779da9caa24e254964545895f (fixed)
Vendor states this is fixed in 5.15.145 (unaffected)
Vendor states this is fixed in 6.1.53 (unaffected)
Vendor states this is fixed in 6.3 (unaffected)
Vendor states this is fixed in 6.4.16 (unaffected)
Vendor states this is fixed in 6.5 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/330d900620dfc9893011d725b3620cd2ee0bc2bc
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/536bb492d39bb6c080c92f31e8a55fe9934f452b
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/5c0df9d30c289d6b9d7d44e2a450de2f8e3cf40b
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/aa669ef229ae8dd779da9caa24e254964545895f

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
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-119

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