Red Hat Security Advisory: kernel security update

Fixed packages 48

Vulnerabilities 6

• 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-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
• High 7.5
  CVE-2025-40240

  sctp: avoid NULL dereference when chunk data buffer is missing

  In the Linux kernel, the following vulnerability has been resolved: sctp: avoid NULL dereference when chunk data buffer is missing chunk->skb pointer is dereferenced in the if-block where it's supposed to be NULL only. chunk->skb can only be NULL if chunk->he…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Dec 4, 2025
• High 7.5
  CVE-2025-71085

  ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr()

  In the Linux kernel, the following vulnerability has been resolved: ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr() There exists a kernel oops caused by a BUG_ON(nhead < 0) at net/core/skbuff.c:2232 in pskb_expand_head(). This bug is tri…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jan 13, 2026
• High 7.1
  CVE-2021-4460

  drm/amdkfd: Fix UBSAN shift-out-of-bounds warning

  In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix UBSAN shift-out-of-bounds warning If get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up doing a shift operation where the number of bits shifted equals number of …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Oct 1, 2025
• 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=2400732
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2418832
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2429026
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2439900
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7003.json
• report
  https://access.redhat.com/security/cve/CVE-2021-4460
• advisory
  https://www.cve.org/CVERecord?id=CVE-2021-4460
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2021-4460
• article
  https://lore.kernel.org/linux-cve-announce/2025100114-CVE-2021-4460-aa71@gregkh/T
• 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-2025-40240
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-40240
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-40240
• article
  https://kernelcve.org/list/?q=CVE-2025-40240
• article
  https://lore.kernel.org/linux-cve-announce/2025120403-CVE-2025-40240-745a@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-71085
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-71085
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-71085
• article
  https://lore.kernel.org/linux-cve-announce/2026011340-CVE-2025-71085-e6c1@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