Review reviewHigh

CVE-2024-44940

Linux Linux, debian linux, linux kernel

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").

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2024.08.26
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

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").

Affected product and versions

Product
Linux Linux, debian linux, linux kernel
Affected versions
>= 37dd0247797b168ad1cc7f5dbec825a1ee66535b < a925a200299a6dfc7c172f54da6f374edc930053, >= 37dd0247797b168ad1cc7f5dbec825a1ee66535b < b1453a5616c7bd8acd90633ceba4e59105ba3b51, >= 37dd0247797b168ad1cc7f5dbec825a1ee66535b < 5a2e37bc648a2503bf6d687aed27b9f4455d82eb, >= 37dd0247797b168ad1cc7f5dbec825a1ee66535b < 3db4395332e7050ef9ddeb3052e6b5019f2a2a59, >= 37dd0247797b168ad1cc7f5dbec825a1ee66535b < 440ab7f97261bc28501636a13998e1b1946d2e79, >= 37dd0247797b168ad1cc7f5dbec825a1ee66535b < dd89a81d850fa9a65f67b4527c0e420d15bf836c, >= 3.18, 11.0, >= 3.18 < 5.10.234, >= 5.11 < 5.15.174, >= 5.16 < 6.1.107, >= 6.2 < 6.6.47, >= 6.7 < 6.10.6
Fixed versions
5.10.234, 5.15.174, 6.1.107, 6.6.47, 6.10.6

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, debian linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available
CVE-2024-44940 — Linux Linux, debian linux, linux kernel | SECUFOCUS NOW