CVE-2026-74747
CVE CVE-2026-74747EUVD EUVD-2026-66577Published 2026-08-26T14:36:56.000ZLast changed 2026-08-27T05:01:08.000ZCVSS 7.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: ipvs: revalidate ihl to prevent out-of-bounds access While the outer IP header is already pulled into the skb head, we must be careful and revalidate the embedded headers after reading them from the skb frags to prevent out-of-bounds access. One such place reported by Sashiko is ip_vs_nat_icmp() where local process can change the ihl field and after skb_ensure_writable() we can see larger value which is a problem for the ip_send_check(cih) calls. Add check to drop the packet if the ihl field is changed.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 0; 2.6.12; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d93660df4dd1d116f608ada4a29a80a5d6f0a6ed; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5365f012451fce2453f13a568dcb72ea534c1e4d; patch: 7.1.10; patch: 7.2
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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