UBUNTU-CVE-2024-50156
In the Linux kernel, the following vulnerability has been resolved: drm/msm: Avoid NULL dereference in msm_disp_state_print_regs() If the allocation in msm_disp_state_dump_regs() failed then `block->state` can be NULL. The msm_disp_state_print_regs() function _does_ have code to try to handle it with: if (*reg) dump_addr = *reg; ...but since "dump_addr" is initialized to NULL the above is actually a noop. The code then goes on to dereference `dump_addr`. Make the function print "Registers not stored" when it sees a NULL to solve this. Since we're touching the code, fix msm_disp_state_print_regs() not to pointlessly take a double-pointer and properly mark the pointer as `const`. Patchwork: https://patchwork.freedesktop.org/patch/619657/
02 / AFFECTED SOFTWARE
Affected packages
4 explicit affected versions
20 explicit affected versions
5 explicit affected versions
8 explicit affected versions
10 explicit affected versions
52 explicit affected versions
10 explicit affected versions
8 explicit affected versions
37 explicit affected versions
1 explicit affected versions
13 explicit affected versions
14 explicit affected versions
10 explicit affected versions
34 explicit affected versions
23 explicit affected versions
12 explicit affected versions
15 explicit affected versions
15 explicit affected versions
7 explicit affected versions
60 explicit affected versions
7 explicit affected versions
11 explicit affected versions
15 explicit affected versions
12 explicit affected versions
7 explicit affected versions
41 explicit affected versions
57 explicit affected versions
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
19 explicit affected versions
6 explicit affected versions
67 explicit affected versions
21 explicit affected versions
16 explicit affected versions
52 explicit affected versions
60 explicit affected versions
53 explicit affected versions
10 explicit affected versions
58 explicit affected versions
12 explicit affected versions
19 explicit affected versions
59 explicit affected versions
7 explicit affected versions
13 explicit affected versions
18 explicit affected versions
35 explicit affected versions
19 explicit affected versions
19 explicit affected versions
18 explicit affected versions
18 explicit affected versions
41 explicit affected versions
21 explicit affected versions
13 explicit affected versions
23 explicit affected versions
26 explicit affected versions
1 explicit affected versions
21 explicit affected versions
16 explicit affected versions
10 explicit affected versions
22 explicit affected versions
1 explicit affected versions
50 explicit affected versions
12 explicit affected versions
14 explicit affected versions
13 explicit affected versions
7 explicit affected versions
2 explicit affected versions
12 explicit affected versions
12 explicit affected versions
16 explicit affected versions
26 explicit affected versions
13 explicit affected versions
12 explicit affected versions
29 explicit affected versions
13 explicit affected versions
64 explicit affected versions
15 explicit affected versions
16 explicit affected versions
59 explicit affected versions
22 explicit affected versions
33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
1 explicit affected versions
11 explicit affected versions
12 explicit affected versions
7 explicit affected versions
12 explicit affected versions
24 explicit affected versions
50 explicit affected versions
44 explicit affected versions
60 explicit affected versions
10 explicit affected versions
26 explicit affected versions
20 explicit affected versions
1 explicit affected versions
11 explicit affected versions
13 explicit affected versions
21 explicit affected versions
16 explicit affected versions
63 explicit affected versions
24 explicit affected versions
51 explicit affected versions
3 explicit affected versions
1 explicit affected versions
2 explicit affected versions
51 explicit affected versions
7 explicit affected versions
8 explicit affected versions
12 explicit affected versions
47 explicit affected versions
27 explicit affected versions
34 explicit affected versions
17 explicit affected versions
20 explicit affected versions
13 explicit affected versions
13 explicit affected versions
7 explicit affected versions
2 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
25 explicit affected versions
14 explicit affected versions
38 explicit affected versions
52 explicit affected versions
9 explicit affected versions
51 explicit affected versions
11 explicit affected versions
33 explicit affected versions
4 explicit affected versions
1 explicit affected versions
1 explicit affected versions
1 explicit affected versions
58 explicit affected versions
13 explicit affected versions
43 explicit affected versions
10 explicit affected versions
8 explicit affected versions
19 explicit affected versions
14 explicit affected versions
4 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/msm: Avoid NULL dereference in msm_disp_state_print_regs() If the allocation in msm_disp_state_dump_regs() failed then `block->state` can be NULL. The msm_disp_state_print_regs() function _does_ have code to try to handle it with: if (*reg) dump_addr = *reg; ...but since "dump_addr" is initialized to NULL the above is actually a noop. The code then goes on to dereference `dump_addr`. Make the function print "Registers not stored" when it sees a NULL to solve this. Since we're touching the code, fix msm_disp_state_print_regs() not to pointlessly take a double-pointer and properly mark the pointer as `const`. Patchwork: https://patchwork.freedesktop.org/patch/619657/
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/293f53263266bc4340d777268ab4328a97f041fa
- https://git.kernel.org/stable/c/293f53263266bc4340d777268ab4328a97f041fa
- https://git.kernel.org/stable/c/42cf045086feae77b212f0f66e742b91a5b566b7
- https://git.kernel.org/stable/c/563aa81fd66a4e7e6e551a0e02bcc23957cafe2f
- https://git.kernel.org/stable/c/e8e9f2a12a6214080c8ea83220a596f6e1dedc6c
- https://git.kernel.org/stable/c/f7ad916273483748582d97cfa31054ccb19224f3
- https://ubuntu.com/security/CVE-2024-50156
- 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-7388-1
- https://ubuntu.com/security/notices/USN-7389-1
- https://ubuntu.com/security/notices/USN-7390-1
- https://ubuntu.com/security/notices/USN-7449-1
- https://ubuntu.com/security/notices/USN-7449-2
- https://ubuntu.com/security/notices/USN-7450-1
- https://ubuntu.com/security/notices/USN-7451-1
- https://ubuntu.com/security/notices/USN-7452-1
- https://ubuntu.com/security/notices/USN-7453-1
- 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-2024-50156