High 7.5Published Dec 30, 2025

CVE-2023-54306net: tls: avoid hanging tasks on the tx_lock

Updated under an hour ago (Oct 27, 2026, 10:20 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: net: tls: avoid hanging tasks on the tx_lock syzbot sent a hung task report and Eric explains that adversarial receiver may keep RWIN at 0 for a long time, so we are not guaranteed to make forward progress. Thread which took tx_lock and went to sleep may not release tx_lock for hours. Use interruptible sleep where possible and reschedule the work if it can't take the lock. Testing: existing selftest passes

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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: Deferred
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 79ffe6087e9145d2377385cac48d0d6a6b4225a5 before bde541a57b4204d0a800afbbd3d1c06c9cdb133f; from 79ffe6087e9145d2377385cac48d0d6a6b4225a5 before 7123a4337bf73132bbfb5437e4dc83ba864a9a1e; from 79ffe6087e9145d2377385cac48d0d6a6b4225a5 before be5d5d0637fd88c18ee76024bdb22649a1de00d6; 79ffe6087e9145d2377385cac48d0d6a6b4225a5 builds before 1f800f6aae57d2d8f63d32fff383017cbc11cf65; from 79ffe6087e9145d2377385cac48d0d6a6b4225a5 before ccf1ccdc5926907befbe880b562b2a4b5f44c087; from 79ffe6087e9145d2377385cac48d0d6a6b4225a5 before f3221361dc85d4de22586ce8441ec2c67b454f5d; c8d6817345f4ba228d07380e571676405e112872; from 5.3.11 before 5.4	CNA record

References

References

https://git.kernel.org/stable/c/bde541a57b4204d0a800afbbd3d1c06c9cdb133f
https://git.kernel.org/stable/c/7123a4337bf73132bbfb5437e4dc83ba864a9a1e
https://git.kernel.org/stable/c/be5d5d0637fd88c18ee76024bdb22649a1de00d6
https://git.kernel.org/stable/c/1f800f6aae57d2d8f63d32fff383017cbc11cf65
https://git.kernel.org/stable/c/ccf1ccdc5926907befbe880b562b2a4b5f44c087
https://git.kernel.org/stable/c/f3221361dc85d4de22586ce8441ec2c67b454f5d

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.