| Name | CVE-2021-42252 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DLA-2785-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | stretch | 4.9.228-1 | fixed |
| stretch (security) | 4.9.272-2 | fixed | |
| buster | 4.19.208-1 | fixed | |
| buster (security) | 4.19.194-3 | vulnerable | |
| bullseye | 5.10.70-1 | fixed | |
| bullseye (security) | 5.10.46-5 | vulnerable | |
| bookworm | 5.14.9-2 | fixed | |
| sid | 5.14.12-1 | fixed | |
| linux-4.19 (PTS) | stretch (security) | 4.19.208-1~deb9u1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | stretch | (not affected) | |||
| linux | source | buster | 4.19.208-1 | |||
| linux | source | bullseye | 5.10.70-1 | |||
| linux | source | (unstable) | 5.14.6-1 | |||
| linux-4.19 | source | stretch | 4.19.208-1~deb9u1 | DLA-2785-1 |
[stretch] - linux <not-affected> (Vulnerable code introduced later)
https://git.kernel.org/linus/b49a0e69a7b1a68c8d3f64097d06dabb770fec96 (5.15-rc1)