Red Hat Security Advisory: kernel security update

Fixed packages 47

Vulnerabilities 3

• High 8.8
  CVE-2022-49328

  mt76: fix use-after-free by removing a non-RCU wcid pointer

  In the Linux kernel, the following vulnerability has been resolved: mt76: fix use-after-free by removing a non-RCU wcid pointer Fixes an issue caught by KASAN about use-after-free in mt76_txq_schedule by protecting mtxq->wcid with rcu_lock between mt76_txq_sc…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Feb 26, 2025
• High 7.8
  CVE-2022-49696

  tipc: fix use-after-free Read in tipc_named_reinit

  In the Linux kernel, the following vulnerability has been resolved: tipc: fix use-after-free Read in tipc_named_reinit syzbot found the following issue on: ================================================================== BUG: KASAN: use-after-free in tipc_n…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Feb 26, 2025
• High 7.8
  CVE-2025-21764

  ndisc: use RCU protection in ndisc_alloc_skb()

  In the Linux kernel, the following vulnerability has been resolved: ndisc: use RCU protection in ndisc_alloc_skb() ndisc_alloc_skb() can be called without RTNL or RCU being held. Add RCU protection to avoid possible UAF.

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Feb 27, 2025

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2347851
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2348217
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2348575
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_9494.json
• report
  https://access.redhat.com/security/cve/CVE-2022-49328
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-49328
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-49328
• article
  https://lore.kernel.org/linux-cve-announce/2025022638-CVE-2022-49328-ec2f@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2022-49696
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-49696
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-49696
• article
  https://lore.kernel.org/linux-cve-announce/2025022628-CVE-2022-49696-c188@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-21764
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-21764
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-21764
• article
  https://lore.kernel.org/linux-cve-announce/2025022605-CVE-2025-21764-1061@gregkh/T