vulnerability

Ubuntu: (CVE-2024-39293): linux vulnerability

Severity
4
CVSS
(AV:L/AC:M/Au:S/C:N/I:N/A:C)
Published
Jun 25, 2024
Added
Jun 26, 2025
Modified
Sep 19, 2025

Description

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.

Solution

no-fix-ubuntu-package
Title
NEW

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