Red Hat Security Advisory: kernel security update

Fixed packages 52

Vulnerabilities 1

• Critical 9.8
  CVE-2026-98432 Public exploit

  ipv4: free inet_opt and ireq_opt after an RCU grace period

  In the Linux kernel, the following vulnerability has been resolved: ipv4: free inet_opt and ireq_opt after an RCU grace period tcp_v4_syn_recv_sock() transfers ownership of ireq->ireq_opt to the child socket (newinet->inet_opt) without copying it. Another cpu…

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

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2553390
• article
  https://issues.redhat.com/browse/VOYAGER-1626
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_93775.json
• report
  https://access.redhat.com/security/cve/CVE-2026-98432
• article
  https://access.redhat.com/security/vulnerabilities/RHSB-2026-016
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-98432
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-98432
• article
  https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98432.mbox