UBUNTU-CVE-2024-40984
In the Linux kernel, the following vulnerability has been resolved: ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine." Undo the modifications made in commit d410ee5109a1 ("ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine.""). The initial purpose of this commit was to stop memory mappings for operation regions from overlapping page boundaries, as it can trigger warnings if different page attributes are present. However, it was found that when this situation arises, mapping continues until the boundary's end, but there is still an attempt to read/write the entire length of the map, leading to a NULL pointer deference. For example, if a four-byte mapping request is made but only one byte is mapped because it hits the current page boundary's end, a four-byte read/write attempt is still made, resulting in a NULL pointer deference. Instead, map the entire length, as the ACPI specification does not mandate that it must be within the same page boundary. It is permissible for it to be mapped across different regions.
02 / AFFECTED SOFTWARE
Affected packages
11 explicit affected versions
35 explicit affected versions
49 explicit affected versions
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
19 explicit affected versions
6 explicit affected versions
58 explicit affected versions
10 explicit affected versions
44 explicit affected versions
65 explicit affected versions
54 explicit affected versions
44 explicit affected versions
10 explicit affected versions
3 explicit affected versions
9 explicit affected versions
51 explicit affected versions
191 explicit affected versions
7 explicit affected versions
50 explicit affected versions
4 explicit affected versions
92 explicit affected versions
13 explicit affected versions
85 explicit affected versions
6 explicit affected versions
35 explicit affected versions
11 explicit affected versions
16 explicit affected versions
18 explicit affected versions
12 explicit affected versions
118 explicit affected versions
37 explicit affected versions
9 explicit affected versions
94 explicit affected versions
13 explicit affected versions
4 explicit affected versions
121 explicit affected versions
23 explicit affected versions
13 explicit affected versions
1 explicit affected versions
21 explicit affected versions
16 explicit affected versions
10 explicit affected versions
49 explicit affected versions
11 explicit affected versions
7 explicit affected versions
12 explicit affected versions
111 explicit affected versions
42 explicit affected versions
12 explicit affected versions
14 explicit affected versions
7 explicit affected versions
82 explicit affected versions
12 explicit affected versions
97 explicit affected versions
105 explicit affected versions
12 explicit affected versions
4 explicit affected versions
93 explicit affected versions
120 explicit affected versions
11 explicit affected versions
5 explicit affected versions
10 explicit affected versions
37 explicit affected versions
13 explicit affected versions
2 explicit affected versions
10 explicit affected versions
31 explicit affected versions
1 explicit affected versions
34 explicit affected versions
26 explicit affected versions
13 explicit affected versions
144 explicit affected versions
6 explicit affected versions
1 explicit affected versions
29 explicit affected versions
85 explicit affected versions
13 explicit affected versions
55 explicit affected versions
3 explicit affected versions
4 explicit affected versions
1 explicit affected versions
80 explicit affected versions
53 explicit affected versions
97 explicit affected versions
15 explicit affected versions
33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
1 explicit affected versions
188 explicit affected versions
11 explicit affected versions
12 explicit affected versions
7 explicit affected versions
12 explicit affected versions
95 explicit affected versions
138 explicit affected versions
2 explicit affected versions
42 explicit affected versions
36 explicit affected versions
132 explicit affected versions
52 explicit affected versions
165 explicit affected versions
154 explicit affected versions
10 explicit affected versions
26 explicit affected versions
11 explicit affected versions
31 explicit affected versions
1 explicit affected versions
3 explicit affected versions
12 explicit affected versions
13 explicit affected versions
11 explicit affected versions
139 explicit affected versions
55 explicit affected versions
16 explicit affected versions
55 explicit affected versions
12 explicit affected versions
43 explicit affected versions
116 explicit affected versions
3 explicit affected versions
93 explicit affected versions
1 explicit affected versions
2 explicit affected versions
62 explicit affected versions
51 explicit affected versions
92 explicit affected versions
9 explicit affected versions
12 explicit affected versions
41 explicit affected versions
27 explicit affected versions
27 explicit affected versions
1 explicit affected versions
1 explicit affected versions
98 explicit affected versions
5 explicit affected versions
8 explicit affected versions
16 explicit affected versions
5 explicit affected versions
8 explicit affected versions
1 explicit affected versions
10 explicit affected versions
8 explicit affected versions
13 explicit affected versions
84 explicit affected versions
13 explicit affected versions
49 explicit affected versions
7 explicit affected versions
140 explicit affected versions
94 explicit affected versions
46 explicit affected versions
10 explicit affected versions
13 explicit affected versions
12 explicit affected versions
84 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
41 explicit affected versions
37 explicit affected versions
12 explicit affected versions
14 explicit affected versions
38 explicit affected versions
167 explicit affected versions
44 explicit affected versions
9 explicit affected versions
44 explicit affected versions
11 explicit affected versions
4 explicit affected versions
52 explicit affected versions
7 explicit affected versions
25 explicit affected versions
97 explicit affected versions
56 explicit affected versions
121 explicit affected versions
4 explicit affected versions
1 explicit affected versions
1 explicit affected versions
50 explicit affected versions
13 explicit affected versions
43 explicit affected versions
50 explicit affected versions
10 explicit affected versions
8 explicit affected versions
7 explicit affected versions
14 explicit affected versions
85 explicit affected versions
4 explicit affected versions
74 explicit affected versions
11 explicit affected versions
1 explicit affected versions
69 explicit affected versions
5 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine." Undo the modifications made in commit d410ee5109a1 ("ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine.""). The initial purpose of this commit was to stop memory mappings for operation regions from overlapping page boundaries, as it can trigger warnings if different page attributes are present. However, it was found that when this situation arises, mapping continues until the boundary's end, but there is still an attempt to read/write the entire length of the map, leading to a NULL pointer deference. For example, if a four-byte mapping request is made but only one byte is mapped because it hits the current page boundary's end, a four-byte read/write attempt is still made, resulting in a NULL pointer deference. Instead, map the entire length, as the ACPI specification does not mandate that it must be within the same page boundary. It is permissible for it to be mapped across different regions.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/a83e1385b780d41307433ddbc86e3c528db031f0
- https://git.kernel.org/stable/c/434c6b924e1f4c219aab2d9e05fe79c5364e37d3
- https://git.kernel.org/stable/c/435ecc978c3d5d0c4e172ec5b956dc1904061d98
- https://git.kernel.org/stable/c/6eca23100e9030725f69c1babacd58803f29ec8d
- https://git.kernel.org/stable/c/a83e1385b780d41307433ddbc86e3c528db031f0
- https://git.kernel.org/stable/c/ae465109d82f4fb03c5adbe85f2d6a6a3d59124c
- https://git.kernel.org/stable/c/dc5017c57f5eee80020c73ff8b67ba7f9fd08b1f
- https://git.kernel.org/stable/c/ddc1f5f124479360a1fd43f73be950781d172239
- https://git.kernel.org/stable/c/e21a4c9129c72fa54dd00f5ebf71219b41d43c04
- https://ubuntu.com/security/CVE-2024-40984
- https://ubuntu.com/security/notices/USN-6999-1
- https://ubuntu.com/security/notices/USN-6999-2
- https://ubuntu.com/security/notices/USN-7003-1
- https://ubuntu.com/security/notices/USN-7003-2
- https://ubuntu.com/security/notices/USN-7003-3
- https://ubuntu.com/security/notices/USN-7003-4
- https://ubuntu.com/security/notices/USN-7003-5
- https://ubuntu.com/security/notices/USN-7004-1
- https://ubuntu.com/security/notices/USN-7005-1
- https://ubuntu.com/security/notices/USN-7005-2
- https://ubuntu.com/security/notices/USN-7006-1
- https://ubuntu.com/security/notices/USN-7007-1
- https://ubuntu.com/security/notices/USN-7007-2
- https://ubuntu.com/security/notices/USN-7007-3
- https://ubuntu.com/security/notices/USN-7008-1
- https://ubuntu.com/security/notices/USN-7009-1
- https://ubuntu.com/security/notices/USN-7009-2
- https://ubuntu.com/security/notices/USN-7019-1
- https://ubuntu.com/security/notices/USN-7029-1
- https://www.cve.org/CVERecord?id=CVE-2024-40984