Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Fixed packages 160

Vulnerabilities 12

• Critical 9.8
  CVE-2026-53006

  ipv6: fix possible UAF in icmpv6_rcv()

  In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in icmpv6_rcv() Caching saddr and daddr before pskb_pull() is problematic since skb->head can change. Remove these temporary variables: - We only access &ipv6_hdr(skb)-…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jun 24, 2026
• Critical 9.8
  CVE-2026-74480

  net: bridge: stop fast-leave after deleting a port group

  In the Linux kernel, the following vulnerability has been resolved: net: bridge: stop fast-leave after deleting a port group br_multicast_leave_group() iterates mp->ports with pp = &p->next in its fast-leave path. After br_multicast_del_pg() removes p, contin…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Aug 15, 2026
• Critical 9.4
  CVE-2026-43114

  netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry

  In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry New test case fails unexpectedly when avx2 matching functions are used. The test first loads a ranomly generated pipa…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 6, 2026
• High 8.8
  CVE-2026-46056

  Bluetooth: hci_event: fix potential UAF in SSP passkey handlers

  In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers hci_conn lookup and field access must be covered by hdev lock in hci_user_passkey_notify_evt() and hci_keypress_notify_evt(), o…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 27, 2026
• High 8.8
  CVE-2026-74580 Public exploit

  vhost: reset the vring metadata cache on vring reconfiguration

  In the Linux kernel, the following vulnerability has been resolved: vhost: reset the vring metadata cache on vring reconfiguration vq->meta_iotlb[] caches the vhost_iotlb_map that backs each vring metadata region, and iotlb_access_ok() returns early on a cach…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Aug 21, 2026
• High 8.1
  CVE-2026-46099

  net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels

  In the Linux kernel, the following vulnerability has been resolved: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels seg6_input_core() and rpl_input() call ip6_route_input() which sets a NOREF dst on the skb, then pass it to dst_cache_set_ip6() invoking…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 27, 2026
• High 7.8
  CVE-2026-43023

  Bluetooth: SCO: fix race conditions in sco_sock_connect()

  In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: fix race conditions in sco_sock_connect() sco_sock_connect() checks sk_state and sk_type without holding the socket lock. Two concurrent connect() syscalls on the same socket …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 1, 2026
• High 7.8
  CVE-2026-46145

  RDMA/mana: Validate rx_hash_key_len

  In the Linux kernel, the following vulnerability has been resolved: RDMA/mana: Validate rx_hash_key_len Sashiko points out that rx_hash_key_len comes from a uAPI structure and is blindly passed to memcpy, allowing the userspace to trash kernel memory. Bounds …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 28, 2026
• High 7.8
  CVE-2026-64002

  ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

  In the Linux kernel, the following vulnerability has been resolved: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() ipv4_sysctl_exit_net() is currently freeing net->ipv4.sysctl_local_reserved_ports too soon. Only after unr…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jul 19, 2026
• High 7.8
  CVE-2026-64304

  crypto: qat - validate RSA CRT component lengths

  In the Linux kernel, the following vulnerability has been resolved: crypto: qat - validate RSA CRT component lengths The generic RSA key parser (rsa_helper.c) bounds each CRT component (p, q, dp, dq, qinv) by the modulus size n_sz, but qat_rsa_setkey_crt() al…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jul 25, 2026
• Unscored —
  CVE-2024-46744

  Squashfs: sanity check symbolic link size

  In the Linux kernel, the following vulnerability has been resolved: Squashfs: sanity check symbolic link size Syzkiller reports a "KMSAN: uninit-value in pick_link" bug. This is caused by an uninitialised page, which is ultimately caused by a corrupted symbol…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 18, 2024
• Unscored —
  CVE-2025-68211

  ksm: use range-walk function to jump over holes in scan_get_next_rmap_item

  In the Linux kernel, the following vulnerability has been resolved: ksm: use range-walk function to jump over holes in scan_get_next_rmap_item Currently, scan_get_next_rmap_item() walks every page address in a VMA to locate mergeable pages. This becomes highl…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Dec 16, 2025

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2313092
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2422696
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2464496
• report
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• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2481972
• report
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• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482581
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2492363
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2502363
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2507119
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2517046
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2521055
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_62568.json
• report
  https://access.redhat.com/security/cve/CVE-2024-46744
• advisory
  https://www.cve.org/CVERecord?id=CVE-2024-46744
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2024-46744
• article
  https://lore.kernel.org/linux-cve-announce/2024091836-CVE-2024-46744-451f@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-68211
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-68211
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-68211
• article
  https://lore.kernel.org/linux-cve-announce/2025121634-CVE-2025-68211-180a@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-43023
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-43023
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-43023
• article
  https://lore.kernel.org/linux-cve-announce/2026050158-CVE-2026-43023-19eb@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-43114
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-43114
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-43114
• article
  https://lore.kernel.org/linux-cve-announce/2026050626-CVE-2026-43114-5deb@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46056
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46056
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46056
• article
  https://lore.kernel.org/linux-cve-announce/2026052754-CVE-2026-46056-0ff1@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46099
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46099
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46099
• article
  https://lore.kernel.org/linux-cve-announce/2026052704-CVE-2026-46099-2a55@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46145