In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_sip: validate skb_dst() before accessing it tc ingress and openvswitch do not guarantee routing information to be available. These subsystems use the conntrack helper infrastructure, and the SIP helper relies on the skb_dst() to be present if sip_external_media is set to 1 (which is disabled by default as a module parameter). This effectively disables the sip_external_media toggle for these subsystems without resulting in a crash.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 7.5NVD modified 2026-10-16 19:17
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 8
- https://git.kernel.org/stable/c/09755dc62b026076b1d47f83489eb0547c8135e0
- https://git.kernel.org/stable/c/0aec339694a56e263d4b22475ff7211d40900830
- https://git.kernel.org/stable/c/7866116a040b3a23fb094e7d8f7ea3d61b3ac70b
- https://git.kernel.org/stable/c/b843a96252f672332837ea2ecb7c8db0acf68e20
- https://git.kernel.org/stable/c/c199ed687c00841daf60e9d131976958583a8c09
- https://git.kernel.org/stable/c/c5ef7228be04518d95591fc5369a9c554b19756d
- https://git.kernel.org/stable/c/e5e24a365a5e024efef63cc49abb345fbd4852c5
- https://git.kernel.org/stable/c/e64a48c50a1ff565a98c6a98d82b5b942868e76e