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CVE-2024-26583

Public on 2024-02-21
Modified on 2024-02-29
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.
Severity
Medium severity
Medium
CVSS v3 Base Score
6.5
See breakdown
Continue reading

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 1 kernel Not Affected
Amazon Linux 2 - Core kernel Not Affected
Amazon Linux 2 - Kernel-5.10 Extra kernel 2024-05-09 ALAS2KERNEL-5.10-2024-057 Fixed
Amazon Linux 2 - Kernel-5.15 Extra kernel 2024-05-09 ALAS2KERNEL-5.15-2024-043 Fixed
Amazon Linux 2 - Kernel-5.4 Extra kernel 2024-05-09 ALAS2KERNEL-5.4-2024-065 Fixed
Amazon Linux 2023 kernel 2024-02-29 ALAS2023-2024-549 Fixed

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD CVSSv3 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H