Red Hat Security Advisory: kernel security update

Fixed packages 49

Vulnerabilities 7

• High 8.1
  CVE-2025-40168

  smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().

  In the Linux kernel, the following vulnerability has been resolved: smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match(). smc_clc_prfx_match() is called from smc_listen_work() and not under RCU nor RTNL. Using sk_dst_get(sk)->dev could trigger UA…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Nov 12, 2025
• 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-2025-40064

  smc: Fix use-after-free in __pnet_find_base_ndev().

  In the Linux kernel, the following vulnerability has been resolved: smc: Fix use-after-free in __pnet_find_base_ndev(). syzbot reported use-after-free of net_device in __pnet_find_base_ndev(), which was called during connect(). [0] smc_pnet_find_ism_resource(…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Oct 28, 2025
• High 7.8
  CVE-2026-23001 Public exploit

  macvlan: fix possible UAF in macvlan_forward_source()

  In the Linux kernel, the following vulnerability has been resolved: macvlan: fix possible UAF in macvlan_forward_source() Add RCU protection on (struct macvlan_source_entry)->vlan. Whenever macvlan_hash_del_source() is called, we must clear entry->vlan pointe…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jan 25, 2026
• 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-2025-71238

  scsi: qla2xxx: Fix bsg_done() causing double free

  In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix bsg_done() causing double free Kernel panic observed on system, [5353358.825191] BUG: unable to handle page fault for address: ff5f5e897b024000 [5353358.825194] #PF: superv…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Mar 4, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• 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=2406747
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2414482
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2432664
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2439900
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2444398
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_6954.json
• 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-2025-40064
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-40064
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-40064
• article
  https://lore.kernel.org/linux-cve-announce/2025102817-CVE-2025-40064-0c16@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-40168
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-40168
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-40168
• article
  https://lore.kernel.org/linux-cve-announce/2025111256-CVE-2025-40168-bdd5@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-71238
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-71238
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-71238
• article
  https://lore.kernel.org/linux-cve-announce/2026030437-CVE-2025-71238-76bc@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-23001
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-23001
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-23001
• article
  https://lore.kernel.org/linux-cve-announce/2026012534-CVE-2026-23001-7ab0@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