UBUNTU-CVE-2022-48627
In the Linux kernel, the following vulnerability has been resolved: vt: fix memory overlapping when deleting chars in the buffer A memory overlapping copy occurs when deleting a long line. This memory overlapping copy can cause data corruption when scr_memcpyw is optimized to memcpy because memcpy does not ensure its behavior if the destination buffer overlaps with the source buffer. The line buffer is not always broken, because the memcpy utilizes the hardware acceleration, whose result is not deterministic. Fix this problem by using replacing the scr_memcpyw with scr_memmovew.
02 / AFFECTED SOFTWARE
Affected packages
5 explicit affected versions
9 explicit affected versions
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
6 explicit affected versions
18 explicit affected versions
3 explicit affected versions
61 explicit affected versions
14 explicit affected versions
5 explicit affected versions
11 explicit affected versions
191 explicit affected versions
7 explicit affected versions
12 explicit affected versions
88 explicit affected versions
85 explicit affected versions
35 explicit affected versions
18 explicit affected versions
118 explicit affected versions
1 explicit affected versions
90 explicit affected versions
13 explicit affected versions
4 explicit affected versions
121 explicit affected versions
23 explicit affected versions
1 explicit affected versions
1 explicit affected versions
21 explicit affected versions
16 explicit affected versions
10 explicit affected versions
45 explicit affected versions
7 explicit affected versions
12 explicit affected versions
111 explicit affected versions
4 explicit affected versions
12 explicit affected versions
1 explicit affected versions
7 explicit affected versions
78 explicit affected versions
12 explicit affected versions
93 explicit affected versions
101 explicit affected versions
12 explicit affected versions
89 explicit affected versions
120 explicit affected versions
10 explicit affected versions
37 explicit affected versions
10 explicit affected versions
1 explicit affected versions
31 explicit affected versions
26 explicit affected versions
13 explicit affected versions
144 explicit affected versions
1 explicit affected versions
29 explicit affected versions
81 explicit affected versions
13 explicit affected versions
15 explicit affected versions
1 explicit affected versions
77 explicit affected versions
14 explicit affected versions
93 explicit affected versions
33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
188 explicit affected versions
11 explicit affected versions
12 explicit affected versions
7 explicit affected versions
12 explicit affected versions
92 explicit affected versions
138 explicit affected versions
2 explicit affected versions
5 explicit affected versions
3 explicit affected versions
132 explicit affected versions
12 explicit affected versions
165 explicit affected versions
154 explicit affected versions
10 explicit affected versions
26 explicit affected versions
27 explicit affected versions
13 explicit affected versions
139 explicit affected versions
51 explicit affected versions
16 explicit affected versions
15 explicit affected versions
6 explicit affected versions
116 explicit affected versions
3 explicit affected versions
93 explicit affected versions
1 explicit affected versions
58 explicit affected versions
51 explicit affected versions
92 explicit affected versions
12 explicit affected versions
6 explicit affected versions
27 explicit affected versions
1 explicit affected versions
1 explicit affected versions
98 explicit affected versions
8 explicit affected versions
5 explicit affected versions
8 explicit affected versions
1 explicit affected versions
10 explicit affected versions
81 explicit affected versions
13 explicit affected versions
45 explicit affected versions
7 explicit affected versions
140 explicit affected versions
94 explicit affected versions
7 explicit affected versions
10 explicit affected versions
12 explicit affected versions
80 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
1 explicit affected versions
37 explicit affected versions
38 explicit affected versions
167 explicit affected versions
5 explicit affected versions
9 explicit affected versions
5 explicit affected versions
11 explicit affected versions
13 explicit affected versions
7 explicit affected versions
97 explicit affected versions
52 explicit affected versions
121 explicit affected versions
4 explicit affected versions
10 explicit affected versions
43 explicit affected versions
46 explicit affected versions
10 explicit affected versions
8 explicit affected versions
14 explicit affected versions
81 explicit affected versions
4 explicit affected versions
70 explicit affected versions
1 explicit affected versions
69 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: vt: fix memory overlapping when deleting chars in the buffer A memory overlapping copy occurs when deleting a long line. This memory overlapping copy can cause data corruption when scr_memcpyw is optimized to memcpy because memcpy does not ensure its behavior if the destination buffer overlaps with the source buffer. The line buffer is not always broken, because the memcpy utilizes the hardware acceleration, whose result is not deterministic. Fix this problem by using replacing the scr_memcpyw with scr_memmovew.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/39cdb68c64d84e71a4a717000b6e5de208ee60cc
- https://ubuntu.com/security/CVE-2022-48627
- https://ubuntu.com/security/notices/USN-6896-1
- https://ubuntu.com/security/notices/USN-6896-2
- https://ubuntu.com/security/notices/USN-6896-3
- https://ubuntu.com/security/notices/USN-6896-4
- https://ubuntu.com/security/notices/USN-6896-5
- https://www.cve.org/CVERecord?id=CVE-2022-48627