UBUNTU-CVE-2024-50193
In the Linux kernel, the following vulnerability has been resolved: x86/entry_32: Clear CPU buffers after register restore in NMI return CPU buffers are currently cleared after call to exc_nmi, but before register state is restored. This may be okay for MDS mitigation but not for RDFS. Because RDFS mitigation requires CPU buffers to be cleared when registers don't have any sensitive data. Move CLEAR_CPU_BUFFERS after RESTORE_ALL_NMI.
02 / AFFECTED SOFTWARE
Affected packages
59 explicit affected versions
14 explicit affected versions
51 explicit affected versions
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11 explicit affected versions
1 explicit affected versions
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10 explicit affected versions
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13 explicit affected versions
1 explicit affected versions
45 explicit affected versions
37 explicit affected versions
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60 explicit affected versions
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14 explicit affected versions
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1 explicit affected versions
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13 explicit affected versions
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10 explicit affected versions
10 explicit affected versions
58 explicit affected versions
13 explicit affected versions
11 explicit affected versions
1 explicit affected versions
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8 explicit affected versions
17 explicit affected versions
1 explicit affected versions
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21 explicit affected versions
59 explicit affected versions
6 explicit affected versions
13 explicit affected versions
12 explicit affected versions
24 explicit affected versions
7 explicit affected versions
14 explicit affected versions
60 explicit affected versions
18 explicit affected versions
34 explicit affected versions
12 explicit affected versions
26 explicit affected versions
1 explicit affected versions
41 explicit affected versions
60 explicit affected versions
67 explicit affected versions
23 explicit affected versions
7 explicit affected versions
14 explicit affected versions
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14 explicit affected versions
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33 explicit affected versions
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19 explicit affected versions
51 explicit affected versions
18 explicit affected versions
34 explicit affected versions
3 explicit affected versions
23 explicit affected versions
23 explicit affected versions
26 explicit affected versions
19 explicit affected versions
12 explicit affected versions
13 explicit affected versions
15 explicit affected versions
44 explicit affected versions
4 explicit affected versions
4 explicit affected versions
16 explicit affected versions
12 explicit affected versions
9 explicit affected versions
12 explicit affected versions
52 explicit affected versions
7 explicit affected versions
13 explicit affected versions
14 explicit affected versions
22 explicit affected versions
7 explicit affected versions
19 explicit affected versions
50 explicit affected versions
13 explicit affected versions
7 explicit affected versions
10 explicit affected versions
14 explicit affected versions
18 explicit affected versions
3 explicit affected versions
16 explicit affected versions
43 explicit affected versions
24 explicit affected versions
20 explicit affected versions
19 explicit affected versions
11 explicit affected versions
12 explicit affected versions
47 explicit affected versions
15 explicit affected versions
64 explicit affected versions
35 explicit affected versions
12 explicit affected versions
13 explicit affected versions
6 explicit affected versions
12 explicit affected versions
1 explicit affected versions
50 explicit affected versions
11 explicit affected versions
12 explicit affected versions
58 explicit affected versions
27 explicit affected versions
12 explicit affected versions
7 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: x86/entry_32: Clear CPU buffers after register restore in NMI return CPU buffers are currently cleared after call to exc_nmi, but before register state is restored. This may be okay for MDS mitigation but not for RDFS. Because RDFS mitigation requires CPU buffers to be cleared when registers don't have any sensitive data. Move CLEAR_CPU_BUFFERS after RESTORE_ALL_NMI.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/48a2440d0f20c826b884e04377ccc1e4696c84e9
- https://git.kernel.org/stable/c/227358e89703c344008119be7e8ffa3fdb5b92de
- https://git.kernel.org/stable/c/43778de19d2ef129636815274644b9c16e78c66b
- https://git.kernel.org/stable/c/48a2440d0f20c826b884e04377ccc1e4696c84e9
- https://git.kernel.org/stable/c/64adf22c4bc73ede920baca5defefb70f190cdbc
- https://git.kernel.org/stable/c/6f44a5fc15b5cece0785bc07453db77d99b0a6de
- https://git.kernel.org/stable/c/b6400eb0b347821efc57760221f8fb6d63b9548a
- https://ubuntu.com/security/CVE-2024-50193
- https://ubuntu.com/security/notices/USN-7276-1
- https://ubuntu.com/security/notices/USN-7277-1
- https://ubuntu.com/security/notices/USN-7288-1
- https://ubuntu.com/security/notices/USN-7288-2
- https://ubuntu.com/security/notices/USN-7289-1
- https://ubuntu.com/security/notices/USN-7289-2
- https://ubuntu.com/security/notices/USN-7289-3
- https://ubuntu.com/security/notices/USN-7289-4
- https://ubuntu.com/security/notices/USN-7291-1
- https://ubuntu.com/security/notices/USN-7305-1
- https://ubuntu.com/security/notices/USN-7308-1
- https://ubuntu.com/security/notices/USN-7310-1
- https://ubuntu.com/security/notices/USN-7331-1
- https://ubuntu.com/security/notices/USN-7383-1
- https://ubuntu.com/security/notices/USN-7383-2
- 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-7388-1
- https://ubuntu.com/security/notices/USN-7389-1
- https://ubuntu.com/security/notices/USN-7390-1
- https://ubuntu.com/security/notices/USN-7403-1
- https://ubuntu.com/security/notices/USN-7451-1
- https://ubuntu.com/security/notices/USN-7458-1
- https://ubuntu.com/security/notices/USN-7468-1
- https://ubuntu.com/security/notices/USN-7523-1
- https://ubuntu.com/security/notices/USN-7524-1
- https://www.cve.org/CVERecord?id=CVE-2024-50193