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CVE-2023-53209

wifi: mac80211_hwsim: Fix possible NULL dereference

MEDIUM
5.5
CVSS Score
Published: September 15, 2025 at 02:21 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%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: Fix possible NULL dereference In a call to mac80211_hwsim_select_tx_link() the sta pointer might be NULL, thus need to check that it is not NULL before accessing it.

Affected

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

Linux Kernel· Linux
95%
v < 6.1.426.1 ≤ v < 6.1.426.1 ≤ v < 6.4.76.1 ≤ v < 6.56.2 ≤ v < 6.4.76.186e74a08fecb59985bb2d5fe3e96dc108822a420
Vendor states this is fixed in 0cc80943ef518a1c51a1111e9346d1daf11dd545 (fixed)
Vendor states this is fixed in a8a20fed3e05b3a6866c5c58855deaf3c217ccd6 (fixed)
Vendor states this is fixed in d0124848c7940aba73492e282506b32a13f2e30e (fixed)
Vendor states this is fixed in 6.1 (unaffected)
Vendor states this is fixed in 6.1.42 (unaffected)
Vendor states this is fixed in 6.4.7 (unaffected)
Vendor states this is fixed in 6.5 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/0cc80943ef518a1c51a1111e9346d1daf11dd545
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a8a20fed3e05b3a6866c5c58855deaf3c217ccd6
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d0124848c7940aba73492e282506b32a13f2e30e

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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