Answer in brief
CVE-2026-74724 records a High severity (CVSS 7.8) vulnerability in ipvs: avoid out-of-bounds write in ip_vs_nat_icmp. The current sources do not mark it as known exploited. The current feed maps 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 7.8. 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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3b8f79af0e98f27b932b0b416e9c52b692d31ff9 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3c779b258c9c3c3567af68d4f45c2f751f35bd0e || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <be65fa324640c7a95e30b146159a2be5cc73f22e || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a69a4b3fff5814d079beff9a1e9d369994b2ed47 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <243d0187ec4c3837b9b0004f18d1068e46115760 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <646922a0379496154e8c8faca4f8e2fd9100cacc | 3b8f79af0e98f27b932b0b416e9c52b692d31ff9, 3c779b258c9c3c3567af68d4f45c2f751f35bd0e, be65fa324640c7a95e30b146159a2be5cc73f22e, a69a4b3fff5814d079beff9a1e9d369994b2ed47, 243d0187ec4c3837b9b0004f18d1068e46115760, 646922a0379496154e8c8faca4f8e2fd9100cacc |
| Linux/Linuxgeneric | 2.6.12 | Not reported |
Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 22, 2026
In the Linux kernel, the following vulnerability has been resolved: ipvs: avoid out-of-bounds write in ip_vs_nat_icmp Sashiko warns that local attacker can modify the packet while it is processed by IPVS. Some places read the IP ihl field multiple times which can cause out-of-bounds access. One such place is ip_vs_nat_icmp where we can write after the validated area. Fix it by providing ciph argument just like it is done for IPv6 and use ciph->len as offset to the embedded transport header. Modify some IPv4 header checks by reading the ihl field only once.
Quoted source text, attributed separately from HOL analysis.