UBUNTU-CVE-2024-57798
In the Linux kernel, the following vulnerability has been resolved: drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req() While receiving an MST up request message from one thread in drm_dp_mst_handle_up_req(), the MST topology could be removed from another thread via drm_dp_mst_topology_mgr_set_mst(false), freeing mst_primary and setting drm_dp_mst_topology_mgr::mst_primary to NULL. This could lead to a NULL deref/use-after-free of mst_primary in drm_dp_mst_handle_up_req(). Avoid the above by holding a reference for mst_primary in drm_dp_mst_handle_up_req() while it's used. v2: Fix kfreeing the request if getting an mst_primary reference fails.
02 / AFFECTED SOFTWARE
Affected packages
4 explicit affected versions
50 explicit affected versions
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27 explicit affected versions
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43 explicit affected versions
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19 explicit affected versions
6 explicit affected versions
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63 explicit affected versions
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2 explicit affected versions
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37 explicit affected versions
1 explicit affected versions
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13 explicit affected versions
37 explicit affected versions
26 explicit affected versions
13 explicit affected versions
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13 explicit affected versions
67 explicit affected versions
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15 explicit affected versions
62 explicit affected versions
25 explicit affected versions
33 explicit affected versions
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19 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
1 explicit affected versions
53 explicit affected versions
47 explicit affected versions
63 explicit affected versions
10 explicit affected versions
26 explicit affected versions
1 explicit affected versions
10 explicit affected versions
23 explicit affected versions
13 explicit affected versions
20 explicit affected versions
16 explicit affected versions
64 explicit affected versions
23 explicit affected versions
53 explicit affected versions
3 explicit affected versions
2 explicit affected versions
51 explicit affected versions
9 explicit affected versions
20 explicit affected versions
16 explicit affected versions
12 explicit affected versions
50 explicit affected versions
27 explicit affected versions
37 explicit affected versions
54 explicit affected versions
19 explicit affected versions
13 explicit affected versions
13 explicit affected versions
7 explicit affected versions
2 explicit affected versions
12 explicit affected versions
15 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
45 explicit affected versions
37 explicit affected versions
24 explicit affected versions
14 explicit affected versions
38 explicit affected versions
53 explicit affected versions
9 explicit affected versions
52 explicit affected versions
11 explicit affected versions
14 explicit affected versions
7 explicit affected versions
63 explicit affected versions
7 explicit affected versions
33 explicit affected versions
43 explicit affected versions
10 explicit affected versions
8 explicit affected versions
18 explicit affected versions
14 explicit affected versions
4 explicit affected versions
78 explicit affected versions
11 explicit affected versions
1 explicit affected versions
14 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req() While receiving an MST up request message from one thread in drm_dp_mst_handle_up_req(), the MST topology could be removed from another thread via drm_dp_mst_topology_mgr_set_mst(false), freeing mst_primary and setting drm_dp_mst_topology_mgr::mst_primary to NULL. This could lead to a NULL deref/use-after-free of mst_primary in drm_dp_mst_handle_up_req(). Avoid the above by holding a reference for mst_primary in drm_dp_mst_handle_up_req() while it's used. v2: Fix kfreeing the request if getting an mst_primary reference fails.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/e54b00086f7473dbda1a7d6fc47720ced157c6a8
- https://git.kernel.org/stable/c/9735d40f5fde9970aa46e828ecc85c32571d58a2
- https://git.kernel.org/stable/c/ce55818b2d3a999f886af91679589e4644ff1dc8
- https://git.kernel.org/stable/c/e54b00086f7473dbda1a7d6fc47720ced157c6a8
- https://git.kernel.org/stable/c/f61b2e5e7821f868d6afc22382a66a30ee780ba0
- https://ubuntu.com/security/CVE-2024-57798
- https://ubuntu.com/security/notices/USN-7379-1
- https://ubuntu.com/security/notices/USN-7379-2
- https://ubuntu.com/security/notices/USN-7380-1
- https://ubuntu.com/security/notices/USN-7381-1
- https://ubuntu.com/security/notices/USN-7382-1
- https://ubuntu.com/security/notices/USN-7402-1
- https://ubuntu.com/security/notices/USN-7402-2
- https://ubuntu.com/security/notices/USN-7402-3
- https://ubuntu.com/security/notices/USN-7402-4
- https://ubuntu.com/security/notices/USN-7402-5
- https://ubuntu.com/security/notices/USN-7403-1
- https://ubuntu.com/security/notices/USN-7406-1
- https://ubuntu.com/security/notices/USN-7406-2
- https://ubuntu.com/security/notices/USN-7406-3
- https://ubuntu.com/security/notices/USN-7406-4
- https://ubuntu.com/security/notices/USN-7406-5
- https://ubuntu.com/security/notices/USN-7406-6
- https://ubuntu.com/security/notices/USN-7407-1
- https://ubuntu.com/security/notices/USN-7420-1
- https://ubuntu.com/security/notices/USN-7421-1
- https://ubuntu.com/security/notices/USN-7451-1
- https://ubuntu.com/security/notices/USN-7458-1
- https://ubuntu.com/security/notices/USN-7459-1
- https://ubuntu.com/security/notices/USN-7459-2
- https://ubuntu.com/security/notices/USN-7468-1
- https://ubuntu.com/security/notices/USN-7475-1
- https://ubuntu.com/security/notices/USN-7523-1
- https://ubuntu.com/security/notices/USN-7524-1
- https://www.cve.org/CVERecord?id=CVE-2024-57798