net: remove WARN_ON_ONCE() from sk_mc_loop()
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 89% of all CVEs
observed exploitation
nono source reports it
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.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/0d75f2c1d0764efa756ad9c1e078d8c09ea8fc1fhttps://git.kernel.org/stable/c/97133c4d42654578fab95abe47359ebe784dde18https://git.kernel.org/stable/c/ad7dbb1d14b1b4406eca8ef9478e8de312ba0cfehttps://git.kernel.org/stable/c/ad7fa2f411cb30f63d6725f111be134064cdb718https://git.kernel.org/stable/c/b8a39a09ae4eaae04309e1e38ed6a1101d967496https://git.kernel.org/stable/c/c8f256dc849205ccb2bd78bd99a3497b972b44e0https://git.kernel.org/stable/c/d2adc4e80b29e58b5162ae09f0f657a215806c8chttps://git.kernel.org/stable/c/f625c742b33dc137c209dd13d1c5f12b1c18d71c