AZL-112628
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-112628.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-112628
- Upstream
- Published
- 2026-11-03T12:17:33Z
- Modified
- 2026-11-04T14:17:37Z
- Summary
- CVE-2026-99263 affecting package kernel 6.6.159.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
io_uring/poll: avoid retry wakeup loss when dropping ownership
If a wakeup sets IO_POLL_RETRY_FLAG between the owning task consuming the existing instance of IO_POLL_RETRY_FLAG and the loop check of io_poll_check_events(), then we stall on processing the request until an unrelated wakeup comes along.
Using atomic_cmpxchg instead of atomic_sub_return to guarantee both the count v and poll_refs are 0 and no wake-ups are missed.
- References