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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-72253

netfilter: nf_conntrack_sip: validate skb_dst() before accessing it

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • cae3a2627520c3795b54533c5328b77af3405dbe to < 7866116a040b3a23fb094e7d8f7ea3d61b3ac70baffected
  • cae3a2627520c3795b54533c5328b77af3405dbe to < c5ef7228be04518d95591fc5369a9c554b19756daffected
  • cae3a2627520c3795b54533c5328b77af3405dbe to < 0aec339694a56e263d4b22475ff7211d40900830affected
  • cae3a2627520c3795b54533c5328b77af3405dbe to < e64a48c50a1ff565a98c6a98d82b5b942868e76eaffected
  • cae3a2627520c3795b54533c5328b77af3405dbe to < c199ed687c00841daf60e9d131976958583a8c09affected
  • cae3a2627520c3795b54533c5328b77af3405dbe to < 09755dc62b026076b1d47f83489eb0547c8135e0affected
  • cae3a2627520c3795b54533c5328b77af3405dbe to < b843a96252f672332837ea2ecb7c8db0acf68e20affected
  • cae3a2627520c3795b54533c5328b77af3405dbe to < e5e24a365a5e024efef63cc49abb345fbd4852c5affected

Linux Linux

Default version status: affected

  • 4.3affected
  • 0 to < 4.3unaffected
  • 5.10.266 to ≤ 5.10.*unaffected
  • 5.15.217 to ≤ 5.15.*unaffected
  • 6.1.184 to ≤ 6.1.*unaffected
  • 6.6.148 to ≤ 6.6.*unaffected
  • 6.12.101 to ≤ 6.12.*unaffected
  • 6.18.42 to ≤ 6.18.*unaffected
  • 7.1.5 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References