CVE-2023-53113

wifi: nl80211: fix NULL-ptr deref in offchan check

MEDIUM
5.5
CVSS Score
Published: May 2, 2025 at 03:55 PM UTC
Updated: June 17, 2026 at 06:44 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: nl80211: fix NULL-ptr deref in offchan check If, e.g. in AP mode, the link was already created by userspace but not activated yet, it has a chandef but the chandef isn't valid and has no channel. Check for this and ignore this link.

Affected

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

v ≥ 5.19.25.19.2 ≤ v < 5.205.19.2 ≤ v < 6.1.216.0 ≤ v < 6.1.216.0 ≤ v < 6.2.86.0 ≤ v < 6.36.2 ≤ v < 6.2.85.19.26.06.3 rc16.3 rc27a53ad13c09150076b7ddde96c2dfc5622c90b457b0a0e3c3a88260b6fcb017e49f198463aa62ed1
Vendor states this is fixed in 201a836c2385fdd2b9d0a8e7737bba5b26f1863a (fixed)
Vendor states this is fixed in 87e80ea4fbc9ce2f2005905fdbcd38baaa47463a (fixed)
Vendor states this is fixed in f624bb6fad23df3270580b4fcef415c6e7bf7705 (fixed)
Affected range stops below 5.20, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 6.0 (unaffected)
Vendor states this is fixed in 6.1.21 (unaffected)
Vendor states this is fixed in 6.2.8 (unaffected)
Vendor states this is fixed in 6.3 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/201a836c2385fdd2b9d0a8e7737bba5b26f1863a
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/87e80ea4fbc9ce2f2005905fdbcd38baaa47463a
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f624bb6fad23df3270580b4fcef415c6e7bf7705

CVSS

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

Quick Info

StatusANALYZED
CWE
CWE-476

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