In the Linux kernel, the following vulnerability has been resolved:
Revert “xsk: Support redirect to any socket bound to the same umem”
This reverts commit 2863d665ea41282379f108e4da6c8a2366ba66db.
This patch introduced a potential kernel crash when multiple napi instances
redirect to the same AF_XDP socket. By removing the queue_index check, it
is
possible for multiple napi instances to access the Rx ring at the same
time,
which will result in a corrupted ring state which can lead to a crash when
flushing the rings in __xsk_flush(). This can happen when the linked list
of
sockets to flush gets corrupted by concurrent accesses. A quick and small
fix
is not possible, so let us revert this for now.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws-6.5 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure | < any | UNKNOWN |
git.kernel.org/linus/7fcf26b315bbb728036da0862de6b335da83dff2 (6.10-rc3)
git.kernel.org/stable/c/19cb40b1064566ea09538289bfcf5bc7ecb9b6f5
git.kernel.org/stable/c/7fcf26b315bbb728036da0862de6b335da83dff2
launchpad.net/bugs/cve/CVE-2024-39293
nvd.nist.gov/vuln/detail/CVE-2024-39293
security-tracker.debian.org/tracker/CVE-2024-39293
www.cve.org/CVERecord?id=CVE-2024-39293