Red Hat Security Advisory: kernel security update

Fixed packages 52

Vulnerabilities 1

• Critical 9.3
  CVE-2026-99999 Public exploit

  ipv4: validate checksum_start before completing checksum

  In the Linux kernel, the following vulnerability has been resolved: ipv4: validate checksum_start before completing checksum If a packet with bad checksum metadata gets into the ipv4 stack, skb_checksum_help can corrupt the network header and cause a bunch of…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Oct 15, 2026

References

• article
  https://docs.redhat.com/en/documentation/red_hat_enterprise_linux_for_nvidia/26.01/html/26.01_release_notes/index
• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2553429
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_85928.json
• report
  https://access.redhat.com/security/cve/CVE-2026-99999
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-99999
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-99999
• article
  https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-99999.mbox