High 8.8Published May 30, 2024

CVE-2024-36922wifi: iwlwifi: read txq->read_ptr under lock

Updated under an hour ago (Oct 27, 2026, 4:00 AM ET)

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It affects Linux and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 7b3e42ea2eadd41cc9d6363a9813b8ba8ab6f0e6 before f30e8af109818c9db08cbcc46eb9713fe4b530ba; from 7b3e42ea2eadd41cc9d6363a9813b8ba8ab6f0e6 before aab7b39fcac5f6165f6434bcbb56bb7865d4ad2b; from 7b3e42ea2eadd41cc9d6363a9813b8ba8ab6f0e6 before b83db8e756dec68a950ed2f056248b1704b3deaa; from 7b3e42ea2eadd41cc9d6363a9813b8ba8ab6f0e6 before 43d07103df670484cdd26f9588eabef80f69db89; from 7b3e42ea2eadd41cc9d6363a9813b8ba8ab6f0e6 before c2ace6300600c634553657785dfe5ea0ed688ac2	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	all versions	CISA ADP
linux linux_kernel linux:linux_kernel	before 6.6.31; from 6.7 before 6.8.10; 6.9	NVD

References

References

https://git.kernel.org/stable/c/f30e8af109818c9db08cbcc46eb9713fe4b530ba
https://git.kernel.org/stable/c/aab7b39fcac5f6165f6434bcbb56bb7865d4ad2b
https://git.kernel.org/stable/c/b83db8e756dec68a950ed2f056248b1704b3deaa	patch
https://git.kernel.org/stable/c/43d07103df670484cdd26f9588eabef80f69db89	patch
https://git.kernel.org/stable/c/c2ace6300600c634553657785dfe5ea0ed688ac2	patch
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.