UBUNTU-CVE-2024-50001
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.
02 / AFFECTED SOFTWARE
Affected packages
11 explicit affected versions
39 explicit affected versions
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63 explicit affected versions
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7 explicit affected versions
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11 explicit affected versions
4 explicit affected versions
37 explicit affected versions
1 explicit affected versions
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11 explicit affected versions
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19 explicit affected versions
33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
1 explicit affected versions
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12 explicit affected versions
7 explicit affected versions
12 explicit affected versions
46 explicit affected versions
40 explicit affected versions
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10 explicit affected versions
26 explicit affected versions
18 explicit affected versions
1 explicit affected versions
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19 explicit affected versions
16 explicit affected versions
59 explicit affected versions
20 explicit affected versions
47 explicit affected versions
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7 explicit affected versions
17 explicit affected versions
12 explicit affected versions
45 explicit affected versions
27 explicit affected versions
31 explicit affected versions
13 explicit affected versions
8 explicit affected versions
20 explicit affected versions
5 explicit affected versions
8 explicit affected versions
10 explicit affected versions
16 explicit affected versions
13 explicit affected versions
13 explicit affected versions
7 explicit affected versions
2 explicit affected versions
50 explicit affected versions
10 explicit affected versions
14 explicit affected versions
12 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
45 explicit affected versions
37 explicit affected versions
21 explicit affected versions
14 explicit affected versions
38 explicit affected versions
49 explicit affected versions
9 explicit affected versions
48 explicit affected versions
11 explicit affected versions
11 explicit affected versions
7 explicit affected versions
56 explicit affected versions
7 explicit affected versions
29 explicit affected versions
4 explicit affected versions
1 explicit affected versions
1 explicit affected versions
1 explicit affected versions
54 explicit affected versions
13 explicit affected versions
43 explicit affected versions
10 explicit affected versions
8 explicit affected versions
15 explicit affected versions
14 explicit affected versions
4 explicit affected versions
11 explicit affected versions
1 explicit affected versions
12 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/2bcae12c795f32ddfbf8c80d1b5f1d3286341c32
- 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://ubuntu.com/security/CVE-2024-50001
- https://ubuntu.com/security/notices/USN-7166-1
- https://ubuntu.com/security/notices/USN-7166-2
- https://ubuntu.com/security/notices/USN-7166-3
- https://ubuntu.com/security/notices/USN-7166-4
- https://ubuntu.com/security/notices/USN-7186-1
- https://ubuntu.com/security/notices/USN-7186-2
- https://ubuntu.com/security/notices/USN-7194-1
- https://ubuntu.com/security/notices/USN-7276-1
- https://ubuntu.com/security/notices/USN-7277-1
- https://ubuntu.com/security/notices/USN-7301-1
- https://ubuntu.com/security/notices/USN-7303-1
- https://ubuntu.com/security/notices/USN-7303-2
- https://ubuntu.com/security/notices/USN-7303-3
- https://ubuntu.com/security/notices/USN-7304-1
- https://ubuntu.com/security/notices/USN-7310-1
- https://ubuntu.com/security/notices/USN-7311-1
- https://ubuntu.com/security/notices/USN-7384-1
- https://ubuntu.com/security/notices/USN-7384-2
- https://ubuntu.com/security/notices/USN-7385-1
- https://ubuntu.com/security/notices/USN-7386-1
- https://ubuntu.com/security/notices/USN-7403-1
- https://ubuntu.com/security/notices/USN-7468-1
- https://www.cve.org/CVERecord?id=CVE-2024-50001