AZL-101858
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-101858.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-101858
- Upstream
- Published
- 2026-09-17T17:17:38Z
- Modified
- 2026-09-18T14:16:29Z
- Summary
- CVE-2026-90392 affecting package kernel 6.6.150.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix potential UAF when reading bpf link info
In bpf_link_show_fdinfo and bpf_link_get_info_by_fd, link->prog is accessed without holding any locks. If the prog is concurrently replaced via bpf_link_update, the old prog can be freed, leading to a potential UAF issue.
Fix this by accessing link->prog under RCU protection to safely fetch the pointer and guarantee its lifetime while reading its fields.
- References