Description
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
References6
- git.kernel.org/stable/c/1f800f6aae57d2d8f63d32fff383017cbc11cf65
- git.kernel.org/stable/c/7123a4337bf73132bbfb5437e4dc83ba864a9a1e
- git.kernel.org/stable/c/bde541a57b4204d0a800afbbd3d1c06c9cdb133f
- git.kernel.org/stable/c/be5d5d0637fd88c18ee76024bdb22649a1de00d6
- git.kernel.org/stable/c/ccf1ccdc5926907befbe880b562b2a4b5f44c087
- git.kernel.org/stable/c/f3221361dc85d4de22586ce8441ec2c67b454f5d
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 49 · as of 11 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.