AZL-6563
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-6563.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-6563
- Upstream
- Published
- 2021-05-27T13:15:08Z
- Modified
- 2026-04-21T04:37:39.198880Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- CVE-2021-33200 affecting package kernel for versions less than 5.10.78.1-1
- Details
-
kernel/bpf/verifier.c in the Linux kernel through 5.12.7 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.
- References