CVE-2026-74724ipvs: avoid out-of-bounds write in ip_vs_nat_icmp
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 3b8f79af0e98f27b932b0b416e9c52b692d31ff9; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 3c779b258c9c3c3567af68d4f45c2f751f35bd0e; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before be65fa324640c7a95e30b146159a2be5cc73f22e; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a69a4b3fff5814d079beff9a1e9d369994b2ed47; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 243d0187ec4c3837b9b0004f18d1068e46115760; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 646922a0379496154e8c8faca4f8e2fd9100cacc | CNA record |
References
- https://git.kernel.org/stable/c/3b8f79af0e98f27b932b0b416e9c52b692d31ff9
- https://git.kernel.org/stable/c/3c779b258c9c3c3567af68d4f45c2f751f35bd0e
- https://git.kernel.org/stable/c/be65fa324640c7a95e30b146159a2be5cc73f22e
- https://git.kernel.org/stable/c/a69a4b3fff5814d079beff9a1e9d369994b2ed47
- https://git.kernel.org/stable/c/243d0187ec4c3837b9b0004f18d1068e46115760
- https://git.kernel.org/stable/c/646922a0379496154e8c8faca4f8e2fd9100cacc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.