CVE-2024-44940: Linux kernel · fou: remove warn in gue_gro_receive on unsupported protocol
Source GCVE Database
Not known to be exploited · CVSS 7.8 High.
Data as of 29 Oct 2026, 22:52 UTC
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 26 Aug 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
Description
In the Linux kernel, the following vulnerability has been resolved: fou: remove warn in gue_gro_receive on unsupported protocol Drop the WARN_ON_ONCE inn gue_gro_receive if the encapsulated type is not known or does not have a GRO handler. Such a packet is easily constructed. Syzbot generates them and sets off this warning. Remove the warning as it is expected and not actionable. The warning was previously reduced from WARN_ON to WARN_ON_ONCE in commit 270136613bf7 ("fou: Do WARN_ON_ONCE in gue_gro_receive for bad proto callbacks").
References
- nvd.nist.gov/vuln/detail/CVE-2024-44940 (opens in a new tab)
- git.kernel.org/stable/c/3db4395332e7050ef9ddeb3052e6b5019f2a2a59 (opens in a new tab)
- git.kernel.org/stable/c/440ab7f97261bc28501636a13998e1b1946d2e79 (opens in a new tab)
- git.kernel.org/stable/c/5a2e37bc648a2503bf6d687aed27b9f4455d82eb (opens in a new tab)
- git.kernel.org/stable/c/a925a200299a6dfc7c172f54da6f374edc930053 (opens in a new tab)
- git.kernel.org/stable/c/b1453a5616c7bd8acd90633ceba4e59105ba3b51 (opens in a new tab)
- git.kernel.org/stable/c/dd89a81d850fa9a65f67b4527c0e420d15bf836c (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/01/msg00001.html (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/03/msg00002.html (opens in a new tab)