Red Hat Security Advisory: kernel security update

Fixed packages 48

Vulnerabilities 5

• Critical 9.1
  CVE-2026-89846

  scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read

  In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read In qla2x00_status_entry(), the FWI2 status path advances sense_data and shrinks par_sense_len by rsp_info_len: if (IS_FWI2_CAPAB…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 16, 2026
• High 8.8
  CVE-2026-63831

  mac802154: llsec: add skb_cow_data() before in-place crypto

  In the Linux kernel, the following vulnerability has been resolved: mac802154: llsec: add skb_cow_data() before in-place crypto llsec_do_encrypt_unauth(), llsec_do_encrypt_auth(), llsec_do_decrypt_unauth(), and llsec_do_decrypt_auth() all perform in-place cry…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jul 19, 2026
• High 8.4
  CVE-2026-72243

  selinux: check connect-related permissions on TCP Fast Open

  In the Linux kernel, the following vulnerability has been resolved: selinux: check connect-related permissions on TCP Fast Open Similar to Landlock, SELinux was not updated when TCP Fast Open support was introduced to ensure connect-related permissions are ch…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Aug 15, 2026
• High 7.0
  CVE-2026-52972

  crypto: af_alg - Cap AEAD AD length to 0x80000000

  In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Cap AEAD AD length to 0x80000000 In order to prevent arithmetic overflows when checking the TX buffer size, cap the associated data length to 0x80000000.

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jun 24, 2026
• Unscored —
  CVE-2026-46086

  net: bridge: use a stable FDB dst snapshot in RCU readers

  In the Linux kernel, the following vulnerability has been resolved: net: bridge: use a stable FDB dst snapshot in RCU readers Local FDB entries can be rewritten in place by `fdb_delete_local()`, which updates `f->dst` to another port or to `NULL` while keepin…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 27, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2481989
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2492364
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2502243
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2516684
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2535391
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_91493.json
• report
  https://access.redhat.com/security/cve/CVE-2026-46086
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46086
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46086
• article
  https://kernelcve.org/list/?q=CVE-2026-46086
• article
  https://lore.kernel.org/linux-cve-announce/2026052701-CVE-2026-46086-d3c8@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-52972
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-52972
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-52972
• article
  https://lore.kernel.org/linux-cve-announce/2026062439-CVE-2026-52972-7d96@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-63831
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-63831
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-63831
• article
  https://lore.kernel.org/linux-cve-announce/2026071908-CVE-2026-63831-36ca@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-72243
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-72243
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-72243
• article
  https://lore.kernel.org/linux-cve-announce/2026081551-CVE-2026-72243-04e7@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-89846
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-89846
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-89846
• article
  https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89846.mbox