CVE-2026-72253
netfilter: nf_conntrack_sip: validate skb_dst() before accessing it
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 15, 2026 |
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Affected Versions
Linux / Linux
cae3a2627520c3795b54533c5328b77af3405dbe < e64a48c50a1ff565a98c6a98d82b5b942868e76e cae3a2627520c3795b54533c5328b77af3405dbe < c199ed687c00841daf60e9d131976958583a8c09 cae3a2627520c3795b54533c5328b77af3405dbe < 09755dc62b026076b1d47f83489eb0547c8135e0 cae3a2627520c3795b54533c5328b77af3405dbe < b843a96252f672332837ea2ecb7c8db0acf68e20 cae3a2627520c3795b54533c5328b77af3405dbe < e5e24a365a5e024efef63cc49abb345fbd4852c5
Linux / Linux
4.3
References
git.kernel.org: https://git.kernel.org/stable/c/e64a48c50a1ff565a98c6a98d82b5b942868e76e git.kernel.org: https://git.kernel.org/stable/c/c199ed687c00841daf60e9d131976958583a8c09 git.kernel.org: https://git.kernel.org/stable/c/09755dc62b026076b1d47f83489eb0547c8135e0 git.kernel.org: https://git.kernel.org/stable/c/b843a96252f672332837ea2ecb7c8db0acf68e20 git.kernel.org: https://git.kernel.org/stable/c/e5e24a365a5e024efef63cc49abb345fbd4852c5