Red Hat Security Advisory: kernel security update

Fixed packages 81

Vulnerabilities 6

• Critical 9.8
  CVE-2025-38527

  smb: client: fix use-after-free in cifs_oplock_break

  In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free in cifs_oplock_break A race condition can occur in cifs_oplock_break() leading to a use-after-free of the cinode structure when unmounting: cifs_oplock_break()…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Aug 16, 2025
• High 7.8
  CVE-2025-21759

  ipv6: mcast: extend RCU protection in igmp6_send()

  In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: extend RCU protection in igmp6_send() igmp6_send() can be called without RTNL or RCU being held. Extend RCU protection so that we can safely fetch the net pointer and avoid a pot…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Feb 27, 2025
• High 7.8
  CVE-2025-38477

  net/sched: sch_qfq: Fix race condition on qfq_aggregate

  In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_qfq: Fix race condition on qfq_aggregate A race condition can occur when 'agg' is modified in qfq_change_agg (called during qfq_enqueue) while other threads access it concurren…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 28, 2025
• Unscored —
  CVE-2022-50211

  md-raid10: fix KASAN warning

  In the Linux kernel, the following vulnerability has been resolved: md-raid10: fix KASAN warning There's a KASAN warning in raid10_remove_disk when running the lvm test lvconvert-raid-reshape.sh. We fix this warning by verifying that the value "number" is val…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jun 18, 2025
• Unscored —
  CVE-2025-22058

  udp: Fix memory accounting leak.

  In the Linux kernel, the following vulnerability has been resolved: udp: Fix memory accounting leak. Matt Dowling reported a weird UDP memory usage issue. Under normal operation, the UDP memory usage reported in /proc/net/sockstat remains close to zero. Howev…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Apr 16, 2025
• Unscored —
  CVE-2025-38200

  i40e: fix MMIO write access to an invalid page in i40e_clear_hw

  In the Linux kernel, the following vulnerability has been resolved: i40e: fix MMIO write access to an invalid page in i40e_clear_hw When the device sends a specific input, an integer underflow can occur, leading to MMIO write access to an invalid page. Preven…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 4, 2025

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2348596
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2360276
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2373662
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2376392
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2383922
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2388928
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_17124.json
• report
  https://access.redhat.com/security/cve/CVE-2022-50211
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-50211
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-50211
• article
  https://lore.kernel.org/linux-cve-announce/2025061843-CVE-2022-50211-393a@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-21759
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-21759
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-21759
• article
  https://kernelcve.org/list/?q=CVE-2025-21759
• article
  https://lore.kernel.org/linux-cve-announce/2025022604-CVE-2025-21759-ad7c@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-22058
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-22058
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-22058
• article
  https://lore.kernel.org/linux-cve-announce/2025041606-CVE-2025-22058-045a@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38200
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38200
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38200
• article
  https://lore.kernel.org/linux-cve-announce/2025070418-CVE-2025-38200-47d9@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38477
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38477
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38477
• article
  https://kernelcve.org/list/?q=CVE-2025-38477
• article
  https://lore.kernel.org/linux-cve-announce/2025072813-CVE-2025-38477-8b42@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38527
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38527
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38527
• article
  https://lore.kernel.org/linux-cve-announce/2025081654-CVE-2025-38527-c389@gregkh/T