net: tls: avoid hanging tasks on the tx_lock
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.5%
exploitation probability
0.5%top 59% of all CVEs
observed exploitation
nono source reports it
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/1f800f6aae57d2d8f63d32fff383017cbc11cf65https://git.kernel.org/stable/c/7123a4337bf73132bbfb5437e4dc83ba864a9a1ehttps://git.kernel.org/stable/c/bde541a57b4204d0a800afbbd3d1c06c9cdb133fhttps://git.kernel.org/stable/c/be5d5d0637fd88c18ee76024bdb22649a1de00d6https://git.kernel.org/stable/c/ccf1ccdc5926907befbe880b562b2a4b5f44c087https://git.kernel.org/stable/c/f3221361dc85d4de22586ce8441ec2c67b454f5d