CVE-2026-72253netfilter: nf_conntrack_sip: validate skb_dst() before accessing it
- 7.5HighCVSS base score
- 0.70%Exploitation in 30 daysEPSS · top 47% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 2 months later
· 2 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Received | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.70% · top 47% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected cae3a2627520c3795b54533c5328b77af3405dbe – < 7866116a040b3a23fb094e7d8f7ea3d61b3ac70b
- affected cae3a2627520c3795b54533c5328b77af3405dbe – < c5ef7228be04518d95591fc5369a9c554b19756d
- affected cae3a2627520c3795b54533c5328b77af3405dbe – < 0aec339694a56e263d4b22475ff7211d40900830
- affected cae3a2627520c3795b54533c5328b77af3405dbe – < e64a48c50a1ff565a98c6a98d82b5b942868e76e
- affected cae3a2627520c3795b54533c5328b77af3405dbe – < c199ed687c00841daf60e9d131976958583a8c09
- affected cae3a2627520c3795b54533c5328b77af3405dbe – < 09755dc62b026076b1d47f83489eb0547c8135e0
- affected cae3a2627520c3795b54533c5328b77af3405dbe – < b843a96252f672332837ea2ecb7c8db0acf68e20
- affected cae3a2627520c3795b54533c5328b77af3405dbe – < e5e24a365a5e024efef63cc49abb345fbd4852c5
- affected 4.3
- unaffected < 4.3
- unaffected 5.10.266 – ≤ 5.10.*
- unaffected 5.15.217 – ≤ 5.15.*
- unaffected 6.1.184 – ≤ 6.1.*
- unaffected 6.6.148 – ≤ 6.6.*
- unaffected 6.12.101 – ≤ 6.12.*
- unaffected 6.18.42 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/7866116a040b3a23fb094e7d8f7ea3d61b3ac70b (opens in a new tab)
- https://git.kernel.org/stable/c/c5ef7228be04518d95591fc5369a9c554b19756d (opens in a new tab)
- https://git.kernel.org/stable/c/0aec339694a56e263d4b22475ff7211d40900830 (opens in a new tab)
- https://git.kernel.org/stable/c/e64a48c50a1ff565a98c6a98d82b5b942868e76e (opens in a new tab)
- https://git.kernel.org/stable/c/c199ed687c00841daf60e9d131976958583a8c09 (opens in a new tab)
- https://git.kernel.org/stable/c/09755dc62b026076b1d47f83489eb0547c8135e0 (opens in a new tab)
- https://git.kernel.org/stable/c/b843a96252f672332837ea2ecb7c8db0acf68e20 (opens in a new tab)
- https://git.kernel.org/stable/c/e5e24a365a5e024efef63cc49abb345fbd4852c5 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-59152 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-72253)Record last updated .