Red Hat Security Advisory: kernel security update

Fixed packages 81

Vulnerabilities 4

• High 7.8
  CVE-2026-31431 Exploited Public exploit EPSS 98%

  crypto: algif_aead - Revert to operating out-of-place

  In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux Alpine
  Apr 22, 2026

  KEV May 1, 2026
• High 8.1
  CVE-2026-23401

  KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE

  In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE When installing an emulated MMIO SPTE, do so *after* dropping/zapping the existing SPTE (if it's shadow-present). …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Apr 1, 2026
• High 7.8
  CVE-2026-23191

  ALSA: aloop: Fix racy access at PCM trigger

  In the Linux kernel, the following vulnerability has been resolved: ALSA: aloop: Fix racy access at PCM trigger The PCM trigger callback of aloop driver tries to check the PCM state and stop the stream of the tied substream in the corresponding cable. Since b…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Feb 14, 2026
• Unscored —
  CVE-2026-43077

  crypto: algif_aead - Fix minimum RX size check for decryption

  In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Fix minimum RX size check for decryption The check for the minimum receive buffer size did not take the tag size into account during decryption. Fix this by adding the re…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 6, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2439947
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2453803
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2460538
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_14230.json
• report
  https://access.redhat.com/security/cve/CVE-2026-23191
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-23191
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-23191
• article
  https://lore.kernel.org/linux-cve-announce/2026021433-CVE-2026-23191-f990@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-23401
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-23401
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-23401
• article
  https://lore.kernel.org/linux-cve-announce/2026040108-CVE-2026-23401-956d@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-31431
• article
  https://access.redhat.com/security/vulnerabilities/RHSB-2026-002
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-31431
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-31431
• article
  https://access.redhat.com/articles/7141989
• article
  https://access.redhat.com/solutions/7141931
• article
  https://access.redhat.com/solutions/7141979
• article
  https://access.redhat.com/solutions/7141990
• article
  https://access.redhat.com/solutions/7141996
• article
  https://access.redhat.com/solutions/7142032
• article
  https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/managing_monitoring_and_updating_the_kernel/configuring-kernel-command-line-parameters_managing-monitoring-and-updating-the-kernel
• article
  https://lore.kernel.org/linux-cve-announce/2026042214-CVE-2026-31431-3d65@gregkh/T
• article
  https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• report
  https://access.redhat.com/security/cve/CVE-2026-43077
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2467022
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-43077
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-43077
• article
  https://lore.kernel.org/linux-cve-announce/2026050612-CVE-2026-43077-d7b1@gregkh/T