Red Hat Security Advisory: kernel security update

Fixed packages 81

Vulnerabilities 4

• High 7.8
  CVE-2025-38180

  net: atm: fix /proc/net/atm/lec handling

  In the Linux kernel, the following vulnerability has been resolved: net: atm: fix /proc/net/atm/lec handling /proc/net/atm/lec must ensure safety against dev_lec[] changes. It appears it had dev_put() calls without prior dev_hold(), leading to imbalance and U…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 4, 2025
• High 7.8
  CVE-2025-38248 Public exploit

  bridge: mcast: Fix use-after-free during router port configuration

  In the Linux kernel, the following vulnerability has been resolved: bridge: mcast: Fix use-after-free during router port configuration The bridge maintains a global list of ports behind which a multicast router resides. The list is consulted during forwarding…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 9, 2025
• High 7.8
  CVE-2026-23209

  macvlan: fix error recovery in macvlan_common_newlink()

  In the Linux kernel, the following vulnerability has been resolved: macvlan: fix error recovery in macvlan_common_newlink() valis provided a nice repro to crash the kernel: ip link add p1 type veth peer p2 ip link set address 00:00:00:00:00:20 dev p1 ip link …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Feb 14, 2026
• Unscored —
  CVE-2022-49674

  dm raid: fix accesses beyond end of raid member array

  In the Linux kernel, the following vulnerability has been resolved: dm raid: fix accesses beyond end of raid member array On dm-raid table load (using raid_ctr), dm-raid allocates an array rs->devs[rs->raid_disks] for the raid device members. rs->raid_disks i…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Feb 26, 2025

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2347967
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2376376
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2378981
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2439900
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_6961.json
• report
  https://access.redhat.com/security/cve/CVE-2022-49674
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-49674
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-49674
• article
  https://lore.kernel.org/linux-cve-announce/2025022624-CVE-2022-49674-90d4@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38180
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38180
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38180
• article
  https://lore.kernel.org/linux-cve-announce/2025070410-CVE-2025-38180-c6d0@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38248
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38248
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38248
• article
  https://lore.kernel.org/linux-cve-announce/2025070934-CVE-2025-38248-003c@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-23209
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-23209
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-23209
• article
  https://lore.kernel.org/linux-cve-announce/2026021439-CVE-2026-23209-9ad6@gregkh/T