CVE-2024-39293 Revert "xsk: Support redirect to any socket bound to the same umem"

What is CVE-2024-39293?

CVE-2024-39293 is a critical vulnerability in Linux kernel, published on 25 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-362

Which versions are affected by CVE-2024-39293?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-39293?

Apply the vendor's patch.

Is CVE-2024-39293 being exploited?

There is no known exploitation of CVE-2024-39293 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2024-39293, DEBIAN-CVE-2024-39293, GHSA-vhxr-pcmq-x8rc, ROOT-OS-UBUNTU-2204-CVE-2024-39293, ROOT-OS-UBUNTU-2404-CVE-2024-39293, UBUNTU-CVE-2024-39293.