Description

In the Linux kernel, the following vulnerability has been resolved:

tls: fix race between async notify and socket close

The submitting thread (one which called recvmsg/sendmsg)
may exit as soon as the async crypto handler calls complete()
so any code past that point risks touching already freed data.

Try to avoid the locking and extra flags altogether.
Have the main thread hold an extra reference, this way
we can depend solely on the atomic ref counter for
synchronization.

Don't futz with reiniting the completion, either, we are now
tightly controlling when completion fires.

Classification

CVE ID: CVE-2024-26583

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 5.06% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://git.kernel.org/stable/c/f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7
https://git.kernel.org/stable/c/7a3ca06d04d589deec81f56229a9a9d62352ce01
https://git.kernel.org/stable/c/86dc27ee36f558fe223dbdfbfcb6856247356f4a
https://git.kernel.org/stable/c/6209319b2efdd8524691187ee99c40637558fa33
https://git.kernel.org/stable/c/aec7961916f3f9e88766e2688992da6980f11b8d

Timeline