fou: remove warn in gue_gro_receive on unsupported protocol
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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").
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 3.18 and later | 5.10.234, 5.15.174, 6.1.107, 6.6.47, 6.10.6, 6.11 | Patch available | CNA |
- Linux VendorLinux Affected 3.18 and later Fixed in 5.10.234, 5.15.174, 6.1.107, 6.6.47, 6.10.6, 6.11 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.234, 5.15.174, 6.1.107, 6.6.47, 6.10.6, 6.11
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-44940
- 2026-10-03 Alias added: GHSA-3mqr-vvf3-23jj
References
Patch 5
- https://git.kernel.org/stable/c/a925a200299a6dfc7c172f54da6f374edc930053
- https://git.kernel.org/stable/c/b1453a5616c7bd8acd90633ceba4e59105ba3b51
- https://git.kernel.org/stable/c/3db4395332e7050ef9ddeb3052e6b5019f2a2a59
- https://git.kernel.org/stable/c/440ab7f97261bc28501636a13998e1b1946d2e79
- https://git.kernel.org/stable/c/dd89a81d850fa9a65f67b4527c0e420d15bf836c
Advisory 2
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- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2024-44940 · CVE Program
- CVE-2024-44940 · NVD
- FIRST EPSS
- GHSA-3mqr-vvf3-23jj · GitHub Advisory Database · CC BY 4.0
- CVE-2024-44940 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences