Red Hat Security Advisory: kernel security update

Fixed packages 71

Vulnerabilities 4

• High 7.8
  CVE-2025-38129

  page_pool: Fix use-after-free in page_pool_recycle_in_ring

  In the Linux kernel, the following vulnerability has been resolved: page_pool: Fix use-after-free in page_pool_recycle_in_ring syzbot reported a uaf in page_pool_recycle_in_ring: BUG: KASAN: slab-use-after-free in lock_release+0x151/0xa30 kernel/locking/lockd…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jul 3, 2025
• High 7.8
  CVE-2025-38154

  bpf, sockmap: Avoid using sk_socket after free when sending

  In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Avoid using sk_socket after free when sending The sk->sk_socket is not locked or referenced in backlog thread, and during the call to skb_send_sock(), there is a race condition …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jul 3, 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=2376034
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2376056
• 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_5813.json
• report
  https://access.redhat.com/security/cve/CVE-2025-38129
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38129
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38129
• article
  https://lore.kernel.org/linux-cve-announce/2025070330-CVE-2025-38129-3c0e@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38154
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38154
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38154
• article
  https://lore.kernel.org/linux-cve-announce/2025070337-CVE-2025-38154-8353@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