AZL-97050
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-97050.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-97050
- Upstream
- Published
- 2026-08-22T16:16:45Z
- Modified
- 2026-08-30T05:26:50Z
- Summary
- CVE-2026-74704 affecting package kernel 6.6.150.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
net/sched: schcake: drop WARNON(1) for malformed packets in ACK filter
The schcake ACK filter parses packets to find the TCP header and filter duplicated ACKs if the flow is backlogged. The parsing code contains a WARNON(1) which can be triggered by a malformed IP header in certain cases. Depending on the system configuration, this leads either to either spamming dmesg with warnings, or a panic if paniconwarn is set.
The code already correctly skips the offending packet in the branch that triggers the warning, so the WARN_ON itself doesn't really serve any purpose. So just drop it altogether to avoid the inconvenient side effects.
- References