CVE-2024-36922

wifi: iwlwifi: read txq->read_ptr under lock

MEDIUM
5.5
CVSS Score
Published: May 30, 2024 at 03:29 PM UTC
Updated: October 15, 2026 at 01:18 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: wifi: iwlwifi: read txq->read_ptr under lock If we read txq->read_ptr without lock, we can read the same value twice, then obtain the lock, and reclaim from there to two different places, but crucially reclaim the same entry twice, resulting in the WARN_ONCE() a little later. Fix that by reading txq->read_ptr under lock.

Affected

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

v < 6.6.316.7 ≤ v < 6.8.106.96.9 rc17b3e42ea2eadd41cc9d6363a9813b8ba8ab6f0e6
Vendor states this is fixed in 43d07103df670484cdd26f9588eabef80f69db89 (fixed)
Vendor states this is fixed in aab7b39fcac5f6165f6434bcbb56bb7865d4ad2b (fixed)
Vendor states this is fixed in b83db8e756dec68a950ed2f056248b1704b3deaa (fixed)
Vendor states this is fixed in c2ace6300600c634553657785dfe5ea0ed688ac2 (fixed)
Vendor states this is fixed in f30e8af109818c9db08cbcc46eb9713fe4b530ba (fixed)
Vendor states this is fixed in 4.19 (unaffected)
Vendor states this is fixed in 5.15.209 (unaffected)
Vendor states this is fixed in 6.1.175 (unaffected)
Vendor states this is fixed in 6.6.31 (unaffected)
Vendor states this is fixed in 6.8.10 (unaffected)
Vendor states this is fixed in 6.9 (unaffected)

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
NVD-CWE-noinfo

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