Red Hat Security Advisory: kernel security update

Fixed packages 47

Vulnerabilities 3

• High 7.8
  CVE-2022-49985

  bpf: Don't use tnum_range on array range checking for poke descriptors

  In the Linux kernel, the following vulnerability has been resolved: bpf: Don't use tnum_range on array range checking for poke descriptors Hsin-Wei reported a KASAN splat triggered by their BPF runtime fuzzer which is based on a customized syzkaller: BUG: KAS…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jun 18, 2025
• 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

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2373540
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2418832
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2429026
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_5693.json
• report
  https://access.redhat.com/security/cve/CVE-2022-49985
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-49985
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-49985
• article
  https://lore.kernel.org/linux-cve-announce/2025061822-CVE-2022-49985-3e41@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