Vulnerability details
CVE-2026-72253
Linux Linux
netfilter: nf_conntrack_sip: validate skb_dst() before accessing it
CVSS 3.1
7.5High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.5High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 4.3 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | cae3a2627520c3795b54533c5328b77af3405dbe ≤ v < c5ef7228be04518d95591fc5369a9c554b19756d | CVEProject cvelistV5 (CNA) |
| Linux | Linux | cae3a2627520c3795b54533c5328b77af3405dbe ≤ v < 0aec339694a56e263d4b22475ff7211d40900830 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | cae3a2627520c3795b54533c5328b77af3405dbe ≤ v < e64a48c50a1ff565a98c6a98d82b5b942868e76e | CVEProject cvelistV5 (CNA) |
| Linux | Linux | cae3a2627520c3795b54533c5328b77af3405dbe ≤ v < 7866116a040b3a23fb094e7d8f7ea3d61b3ac70b | CVEProject cvelistV5 (CNA) |
| Linux | Linux | cae3a2627520c3795b54533c5328b77af3405dbe ≤ v < 09755dc62b026076b1d47f83489eb0547c8135e0 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | cae3a2627520c3795b54533c5328b77af3405dbe ≤ v < b843a96252f672332837ea2ecb7c8db0acf68e20 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | cae3a2627520c3795b54533c5328b77af3405dbe ≤ v < e5e24a365a5e024efef63cc49abb345fbd4852c5 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | cae3a2627520c3795b54533c5328b77af3405dbe ≤ v < c199ed687c00841daf60e9d131976958583a8c09 | CVEProject cvelistV5 (CNA) |
References and advisories
8- https://git.kernel.org/stable/c/7866116a040b3a23fb094e7d8f7ea3d61b3ac70b
- https://git.kernel.org/stable/c/c5ef7228be04518d95591fc5369a9c554b19756d
- https://git.kernel.org/stable/c/0aec339694a56e263d4b22475ff7211d40900830
- https://git.kernel.org/stable/c/e64a48c50a1ff565a98c6a98d82b5b942868e76e
- https://git.kernel.org/stable/c/c199ed687c00841daf60e9d131976958583a8c09
- https://git.kernel.org/stable/c/09755dc62b026076b1d47f83489eb0547c8135e0
- https://git.kernel.org/stable/c/b843a96252f672332837ea2ecb7c8db0acf68e20
- https://git.kernel.org/stable/c/e5e24a365a5e024efef63cc49abb345fbd4852c5
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Details
- Published
- 2026-08-15
- Last updated
- 2026-10-16
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.69%
Probability of exploitation in 30 days
53.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- —