CVE - CVE-2024-50001

CVE-ID
CVE-2024-50001	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/26fad69b34fcba80d5c7d9e651f628e6ac927754 URL:https://git.kernel.org/stable/c/26fad69b34fcba80d5c7d9e651f628e6ac927754 MISC:https://git.kernel.org/stable/c/2bcae12c795f32ddfbf8c80d1b5f1d3286341c32 URL:https://git.kernel.org/stable/c/2bcae12c795f32ddfbf8c80d1b5f1d3286341c32 MISC:https://git.kernel.org/stable/c/8bb8c12fb5e2b1f03d603d493c92941676f109b5 URL:https://git.kernel.org/stable/c/8bb8c12fb5e2b1f03d603d493c92941676f109b5 MISC:https://git.kernel.org/stable/c/ca36d6c1a49b6965c86dd528a73f38bc62d9c625 URL:https://git.kernel.org/stable/c/ca36d6c1a49b6965c86dd528a73f38bc62d9c625 MISC:https://git.kernel.org/stable/c/ce828b347cf1b3c1b12b091d02463c35ce5097f5 URL:https://git.kernel.org/stable/c/ce828b347cf1b3c1b12b091d02463c35ce5097f5 MISC:https://git.kernel.org/stable/c/ecf310aaf256acbc8182189fe0aa1021c3ddef72 URL:https://git.kernel.org/stable/c/ecf310aaf256acbc8182189fe0aa1021c3ddef72 MISC:https://git.kernel.org/stable/c/fc357e78176945ca7bcacf92ab794b9ccd41b4f4 URL:https://git.kernel.org/stable/c/fc357e78176945ca7bcacf92ab794b9ccd41b4f4
Assigning CNA
kernel.org
Date Record Created
20241021	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241021)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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