AZL-58965
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-58965.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-58965
- Upstream
- Published
- 2025-02-18T15:15:18Z
- Modified
- 2026-04-21T04:37:10.803733Z
- Summary
- CVE-2025-21703 affecting package kernel for versions less than 5.15.180.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
netem: Update sch->q.qlen before qdisctreereduce_backlog()
qdisctreereducebacklog() notifies parent qdisc only if child qdisc becomes empty, therefore we need to reduce the backlog of the child qdisc before calling it. Otherwise it would miss the opportunity to call cops->qlennotify(), in the case of DRR, it resulted in UAF since DRR uses ->qlen_notify() to maintain its active list.
- References