Answer in brief
CVE-2026-72253 records a High severity (CVSS 7.5) vulnerability in netfilter: nf_conntrack_sip: validate skb_dst() before accessing it. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=cae3a2627520c3795b54533c5328b77af3405dbe <e64a48c50a1ff565a98c6a98d82b5b942868e76e || >=cae3a2627520c3795b54533c5328b77af3405dbe <c199ed687c00841daf60e9d131976958583a8c09 || >=cae3a2627520c3795b54533c5328b77af3405dbe <09755dc62b026076b1d47f83489eb0547c8135e0 || >=cae3a2627520c3795b54533c5328b77af3405dbe <b843a96252f672332837ea2ecb7c8db0acf68e20 || >=cae3a2627520c3795b54533c5328b77af3405dbe <e5e24a365a5e024efef63cc49abb345fbd4852c5 | e64a48c50a1ff565a98c6a98d82b5b942868e76e, c199ed687c00841daf60e9d131976958583a8c09, 09755dc62b026076b1d47f83489eb0547c8135e0, b843a96252f672332837ea2ecb7c8db0acf68e20, e5e24a365a5e024efef63cc49abb345fbd4852c5 |
| Linux/Linuxgeneric | 4.3 | Not reported |
| Linux/Linuxgeneric | >=cae3a2627520c3795b54533c5328b77af3405dbe <7866116a040b3a23fb094e7d8f7ea3d61b3ac70b || >=cae3a2627520c3795b54533c5328b77af3405dbe <c5ef7228be04518d95591fc5369a9c554b19756d || >=cae3a2627520c3795b54533c5328b77af3405dbe <0aec339694a56e263d4b22475ff7211d40900830 || >=cae3a2627520c3795b54533c5328b77af3405dbe <e64a48c50a1ff565a98c6a98d82b5b942868e76e || >=cae3a2627520c3795b54533c5328b77af3405dbe <c199ed687c00841daf60e9d131976958583a8c09 || >=cae3a2627520c3795b54533c5328b77af3405dbe <09755dc62b026076b1d47f83489eb0547c8135e0 || >=cae3a2627520c3795b54533c5328b77af3405dbe <b843a96252f672332837ea2ecb7c8db0acf68e20 || >=cae3a2627520c3795b54533c5328b77af3405dbe <e5e24a365a5e024efef63cc49abb345fbd4852c5 | 7866116a040b3a23fb094e7d8f7ea3d61b3ac70b, c5ef7228be04518d95591fc5369a9c554b19756d, 0aec339694a56e263d4b22475ff7211d40900830, e64a48c50a1ff565a98c6a98d82b5b942868e76e, c199ed687c00841daf60e9d131976958583a8c09, 09755dc62b026076b1d47f83489eb0547c8135e0, b843a96252f672332837ea2ecb7c8db0acf68e20, e5e24a365a5e024efef63cc49abb345fbd4852c5 |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.