Red Hat Security Advisory: kernel security update

Fixed packages 124

Vulnerabilities 4

• Critical 9.8
  CVE-2026-43198

  tcp: fix potential race in tcp_v6_syn_recv_sock()

  In the Linux kernel, the following vulnerability has been resolved: tcp: fix potential race in tcp_v6_syn_recv_sock() Code in tcp_v6_syn_recv_sock() after the call to tcp_v4_syn_recv_sock() is done too late. After tcp_v4_syn_recv_sock(), the child socket is a…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 6, 2026
• Critical 9.1
  CVE-2026-46244

  netfilter: nft_inner: Fix IPv6 inner_thoff desync

  In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_inner: Fix IPv6 inner_thoff desync In nft_inner_parse_l2l3(), when processing inner IPv6 packets, ipv6_find_hdr() correctly computes the transport header offset traversing all …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jun 3, 2026
• High 7.8
  CVE-2026-46090

  ALSA: aloop: Fix peer runtime UAF during format-change stop

  In the Linux kernel, the following vulnerability has been resolved: ALSA: aloop: Fix peer runtime UAF during format-change stop loopback_check_format() may stop the capture side when playback starts with parameters that no longer match a running capture strea…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 27, 2026
• High 7.8
  CVE-2026-46181

  RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event()

  In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event() Sashiko points out the radix_tree itself is RCU safe, but nothing ever frees the mlx4_srq struct with RCU, and it isn't even accessed within …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 28, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2467228
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2481980
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482532
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2484451
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_34443.json
• report
  https://access.redhat.com/security/cve/CVE-2026-43198
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-43198
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-43198
• article
  https://lore.kernel.org/linux-cve-announce/2026050645-CVE-2026-43198-0870@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46090
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46090
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46090
• article
  https://kernelcve.org/list/?q=CVE-2026-46090
• article
  https://lore.kernel.org/linux-cve-announce/2026052702-CVE-2026-46090-1211@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46181
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46181
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46181
• article
  https://lore.kernel.org/linux-cve-announce/2026052829-CVE-2026-46181-ecff@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46244
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46244
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46244
• article
  https://lore.kernel.org/linux-cve-announce/2026060309-CVE-2026-46244-e8d7@gregkh/T