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CVE-2026-74747

7.8 high SSVC exploitation: none Published
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 5

  1. StatusReceived → PublishedNVD modified 2026-10-21 12:46
  2. References+2 references (now 5)NVD modified 2026-10-21 13:19
  3. StatusPublished → ReceivedNVD modified 2026-10-21 13:19
  4. StatusReceived → PublishedNVD modified 2026-10-21 12:46
  5. First seenCVSS 7.8NVD modified 2026-10-15 11:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 5