AZL-59013
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-59013.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-59013
- Upstream
- Published
- 2025-02-26T07:01:37Z
- Modified
- 2026-04-21T04:37:11Z
- Summary
- CVE-2022-49622 affecting package kernel 5.15.200.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: avoid skb access on nf_stolen
When verdict is NF_STOLEN, the skb might have been freed.
When tracing is enabled, this can result in a use-after-free:
- access to skb->nf_trace
- access to skb->mark
- computation of trace id
- dump of packet payload
To avoid 1, keep a cached copy of skb->nf_trace in the trace state struct. Refresh this copy whenever verdict is != STOLEN.
Avoid 2 by skipping skb->mark access if verdict is STOLEN.
3 is avoided by precomputing the trace id.
Only dump the packet when verdict is not "STOLEN".
- References