- Vulnerability/
- CVE-2024-53236
CVE-2024-53236: xsk: Free skb when TX metadata options are invalid
First published: Fri Dec 27 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: xsk: Free skb when TX metadata options are invalid When a new skb is allocated for transmitting an xsk descriptor, i.e., for every non-multibuf descriptor or the first frag of a multibuf descriptor, but the descriptor is later found to have invalid options set for the TX metadata, the new skb is never freed. This can leak skbs until the send buffer is full which makes sending more packets impossible. Fix this by freeing the skb in the error path if we are currently dealing with the first frag, i.e., an skb allocated in this iteration of xsk_build_skb.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.21-1 6.12.22-1 |
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Reference Links
- https://git.kernel.org/stable/c/0c0d0f42ffa6ac94cd79893b7ed419c15e1b45de
- https://git.kernel.org/stable/c/7f0d0dd5a7f437d83cff954bc321f1a9b181efd5
- https://git.kernel.org/stable/c/d5d346deb65efa8453f8481bcea75c1a590439e7
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-53236
- https://nvd.nist.gov/vuln/detail/CVE-2024-53236
- https://launchpad.net/bugs/cve/CVE-2024-53236
- https://security-tracker.debian.org/tracker/CVE-2024-53236
- https://ubuntu.com/security/CVE-2024-53236
- https://git.kernel.org/linus/0c0d0f42ffa6ac94cd79893b7ed419c15e1b45de
Frequently Asked Questions
What is the severity of CVE-2024-53236?
CVE-2024-53236 has been classified as a moderate severity vulnerability in the Linux kernel.
How do I fix CVE-2024-53236?
To fix CVE-2024-53236, update to the patched versions of the Linux kernel, specifically 5.10.223-1, 5.10.234-1, 6.1.123-1, 6.1.128-1, 6.12.12-1, or 6.12.16-1.
What systems are affected by CVE-2024-53236?
CVE-2024-53236 affects various versions of the Linux kernel used in Debian-based systems.
What are the risks of not addressing CVE-2024-53236?
Not addressing CVE-2024-53236 could lead to potential denial of service due to resource mismanagement in the kernel.
Is CVE-2024-53236 related to network performance?
Yes, CVE-2024-53236 is related to transmitting xsk descriptors, which can impact network performance if exploited.
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