UBUNTU-CVE-2021-42252
An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel before 5.14.6. Local attackers able to access the Aspeed LPC control interface could overwrite memory in the kernel and potentially execute privileges, aka CID-b49a0e69a7b1. This occurs because a certain comparison uses values that are not memory sizes.
02 / AFFECTED SOFTWARE
Affected packages
6 explicit affected versions
7 explicit affected versions
25 explicit affected versions
84 explicit affected versions
23 explicit affected versions
1 explicit affected versions
1 explicit affected versions
21 explicit affected versions
1 explicit affected versions
1 explicit affected versions
1 explicit affected versions
44 explicit affected versions
10 explicit affected versions
1 explicit affected versions
1 explicit affected versions
1 explicit affected versions
11 explicit affected versions
8 explicit affected versions
70 explicit affected versions
32 explicit affected versions
1 explicit affected versions
1 explicit affected versions
1 explicit affected versions
32 explicit affected versions
1 explicit affected versions
1 explicit affected versions
28 explicit affected versions
24 explicit affected versions
44 explicit affected versions
43 explicit affected versions
1 explicit affected versions
99 explicit affected versions
28 explicit affected versions
1 explicit affected versions
6 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel before 5.14.6. Local attackers able to access the Aspeed LPC control interface could overwrite memory in the kernel and potentially execute privileges, aka CID-b49a0e69a7b1. This occurs because a certain comparison uses values that are not memory sizes.
05 / REFERENCES
Further evidence
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.6
- https://git.kernel.org/linus/b49a0e69a7b1a68c8d3f64097d06dabb770fec96
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b49a0e69a7b1a68c8d3f64097d06dabb770fec96
- https://ubuntu.com/security/CVE-2021-42252
- https://ubuntu.com/security/notices/USN-5136-1
- https://ubuntu.com/security/notices/USN-5137-1
- https://ubuntu.com/security/notices/USN-5161-1
- https://ubuntu.com/security/notices/USN-5162-1
- https://www.cve.org/CVERecord?id=CVE-2021-42252