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.
How to fix
- linux linux_kernel5.10.227, 5.15.168, 6.1.113, 6.6.55, 6.10.14, 6.11.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.10 ≤ v < 5.10.227, 5.11 ≤ v < 5.15.168, 5.16 ≤ v < 6.1.113, 6.2 ≤ v < 6.6.55, 6.7 ≤ v < 6.10.14, 6.11 ≤ v < 6.11.3, 6.12 | 5.10.227, 5.15.168, 6.1.113, 6.6.55, 6.10.14, 6.11.3 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.