CVE-2021-33200 log
| Source |
|
| Severity | Medium |
| Remote | No |
| Type | Privilege escalation |
| Description | kernel/bpf/verifier.c in the Linux kernel before 5.12.8 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit. |
| Group | Package | Affected | Fixed | Severity | Status | Ticket |
|---|---|---|---|---|---|---|
| AVG-2033 | linux-hardened | 5.12.7.hardened1-1 | 5.12.9.hardened1-1 | Medium | Fixed | |
| AVG-2010 | linux-lts | 5.10.40-1 | 5.10.41-1 | Medium | Fixed | |
| AVG-2008 | linux-zen | 5.12.7.zen1-1 | 5.12.8.zen1-1 | Medium | Fixed | |
| AVG-2007 | linux | 5.12.7.arch1-1 | 5.12.8.arch1-1 | Medium | Fixed |