Red Hat Security Advisory: kernel security update

Fixed packages 71

Vulnerabilities 5

• High 7.8
  CVE-2022-49977

  ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead

  In the Linux kernel, the following vulnerability has been resolved: ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead ftrace_startup does not remove ops from ftrace_ops_list when ftrace_startup_enable fails: register_ftrace_func…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jun 18, 2025
• High 7.8
  CVE-2025-21867

  bpf, test_run: Fix use-after-free issue in eth_skb_pkt_type()

  In the Linux kernel, the following vulnerability has been resolved: bpf, test_run: Fix use-after-free issue in eth_skb_pkt_type() KMSAN reported a use-after-free issue in eth_skb_pkt_type()[1]. The cause of the issue was that eth_skb_pkt_type() accessed skb's…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Mar 27, 2025
• High 7.8
  CVE-2025-38079

  crypto: algif_hash - fix double free in hash_accept

  In the Linux kernel, the following vulnerability has been resolved: crypto: algif_hash - fix double free in hash_accept If accept(2) is called on socket type algif_hash with MSG_MORE flag set and crypto_ahash_import fails, sk2 is freed. However, it is also fr…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jun 18, 2025
• High 7.8
  CVE-2025-38177

  sch_hfsc: make hfsc_qlen_notify() idempotent

  In the Linux kernel, the following vulnerability has been resolved: sch_hfsc: make hfsc_qlen_notify() idempotent hfsc_qlen_notify() is not idempotent either and not friendly to its callers, like fq_codel_dequeue(). Let's make it idempotent to ease qdisc_tree_…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 4, 2025
• High 7.8
  CVE-2025-38350

  net/sched: Always pass notifications when child class becomes empty

  In the Linux kernel, the following vulnerability has been resolved: net/sched: Always pass notifications when child class becomes empty Certain classful qdiscs may invoke their classes' dequeue handler on an enqueue operation. This may unexpectedly empty the …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 19, 2025

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2355334
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2373383
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2373574
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2376354
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2382054
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_14696.json
• report
  https://access.redhat.com/security/cve/CVE-2022-49977
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-49977
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-49977
• article
  https://lore.kernel.org/linux-cve-announce/2025061819-CVE-2022-49977-3826@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-21867
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-21867
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-21867
• article
  https://lore.kernel.org/linux-cve-announce/2025032732-CVE-2025-21867-3138@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38079
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38079
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38079
• article
  https://lore.kernel.org/linux-cve-announce/2025061841-CVE-2025-38079-7fa5@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38177
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38177
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38177
• article
  https://lore.kernel.org/linux-cve-announce/2025070411-CVE-2025-38177-bd6c@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38350
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38350
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38350
• article
  https://lore.kernel.org/linux-cve-announce/2025071933-CVE-2025-38350-262a@gregkh/T