CVE-2024-50001
Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix error path in multi-packet WQE transmit Remove the erroneous unmap in case no DMA mapping was established The multi-packet WQE transmit code attempts to obtain a DMA mapping for the skb. This could fail, e.g. under memory pressure, when the IOMMU driver just can't allocate more memory for page tables. While the code tries to handle this in the path below the err_unmap label it erroneously unmaps one entry from the sq's FIFO list of active mappings. Since the current map attempt failed this unmap is removing some random DMA mapping that might still be required. If the PCI function now presents that IOVA, the IOMMU may assumes a rogue DMA access and e.g. on s390 puts the PCI function in error state. The erroneous behavior was seen in a stress-test environment that created memory pressure.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 6.1.115-1 |
| debian | bullseye | fixed | 5.10.234-1 |
| debian | forky | fixed | 6.11.4-1 |
| debian | sid | fixed | 6.11.4-1 |
| debian | trixie | fixed | 6.11.4-1 |
| linux-kernel | affected | 5.10.227 | |
| linux-kernel | 6.12 | affected | |
References
- https://git.kernel.org/stable/c/26fad69b34fcba80d5c7d9e651f628e6ac927754
- https://git.kernel.org/stable/c/2bcae12c795f32ddfbf8c80d1b5f1d3286341c32
- https://git.kernel.org/stable/c/8bb8c12fb5e2b1f03d603d493c92941676f109b5
- https://git.kernel.org/stable/c/ca36d6c1a49b6965c86dd528a73f38bc62d9c625
- https://git.kernel.org/stable/c/ce828b347cf1b3c1b12b091d02463c35ce5097f5
- https://git.kernel.org/stable/c/ecf310aaf256acbc8182189fe0aa1021c3ddef72
- https://git.kernel.org/stable/c/fc357e78176945ca7bcacf92ab794b9ccd41b4f4
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html
- https://www.suse.com/security/cve/CVE-2024-50001.html
- https://security-tracker.debian.org/tracker/CVE-2024-50001
CWEs
CWE-755
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.