AZL-99048
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-99048.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-99048
- Upstream
- Published
- 2026-09-03T13:06:12Z
- Modified
- 2026-10-02T14:19:12Z
- Summary
- CVE-2026-80733 affecting package kernel for versions less than 6.6.152.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
net: remove WARN_ON_ONCE() from sk_mc_loop()
sk_mc_loop() can be called for sockets that are neither AF_INET nor AF_INET6 (e.g. AF_PACKET sockets when sending packets via raw/packet socket over virtual devices such as VRF or ipvlan).
In such cases, sk_family is not AF_INET/AF_INET6 and sk_mc_loop() falls through the switch statement and triggers WARN_ON_ONCE(1).
Non-INET sockets do not support IP_MULTICAST_LOOP or IPV6_MULTICAST_LOOP options, so loopback should default to true without generating a warning.
- References