CVE-2024-44970: net/mlx5e: SHAMPO, Fix invalid WQ linked list unlink
First published: Wed Sep 04 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: SHAMPO, Fix invalid WQ linked list unlink When all the strides in a WQE have been consumed, the WQE is unlinked from the WQ linked list (mlx5_wq_ll_pop()). For SHAMPO, it is possible to receive CQEs with 0 consumed strides for the same WQE even after the WQE is fully consumed and unlinked. This triggers an additional unlink for the same wqe which corrupts the linked list. Fix this scenario by accepting 0 sized consumed strides without unlinking the WQE again.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <6.1.105 | |
| Linux Linux kernel | >=6.2<6.6.46 | |
| Linux Linux kernel | >=6.7<6.10.5 | |
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/50d8009a0ac02c3311b23a0066511f8337bd88d9
- https://git.kernel.org/stable/c/650e24748e1e0a7ff91d5c72b72a2f2a452b5b76
- https://git.kernel.org/stable/c/7b379353e9144e1f7460ff15f39862012c9d0d78
- https://git.kernel.org/stable/c/fba8334721e266f92079632598e46e5f89082f30
- https://lore.kernel.org/linux-cve-announce/2024090456-CVE-2024-44970-f687@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2309801
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-44970
- https://nvd.nist.gov/vuln/detail/CVE-2024-44970
- https://launchpad.net/bugs/cve/CVE-2024-44970
- https://security-tracker.debian.org/tracker/CVE-2024-44970
- https://ubuntu.com/security/CVE-2024-44970
- https://git.kernel.org/linus/fba8334721e266f92079632598e46e5f89082f30
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