MGASA-2021-0225
- Source
- https://advisories.mageia.org/MGASA-2021-0225.html
- Import Source
- https://advisories.mageia.org/MGASA-2021-0225.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/MGASA-2021-0225
- Related
- Published
- 2021-05-31T20:31:00Z
- Modified
- 2022-02-17T18:21:47Z
- Summary
- Updated kernel-linus packages fix security vulnerability
- Details
-
This kernel-linus update is based on upstream 5.10.41 and fixes at least the following security issue:
kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations. 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 (CVE-2021-33200).
For other upstream fixes, see the referenced changelogs.
- References
-
- https://advisories.mageia.org/MGASA-2021-0225.html
- https://bugs.mageia.org/show_bug.cgi?id=28981
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.38
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.39
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.40
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.41
- Credits
-
-
- Mageia - COORDINATOR
-
Affected packages
Mageia:7 / kernel-linus
Package
- Name
- kernel-linus
- Purl
- pkg:rpm/mageia/kernel-linus?distro=mageia-7
Mageia:8 / kernel-linus
Package
- Name
- kernel-linus
- Purl
- pkg:rpm/mageia/kernel-linus?distro=mageia-8