Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Fixed packages 124

Vulnerabilities 17

• Critical 9.8
  CVE-2025-68745

  scsi: qla2xxx: Clear cmds after chip reset

  In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Clear cmds after chip reset Commit aefed3e5548f ("scsi: qla2xxx: target: Fix offline port handling and host reset handling") caused two problems: 1. Commands sent to FW, after …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Dec 24, 2025
• Critical 9.8
  CVE-2026-43493

  crypto: pcrypt - Fix handling of MAY_BACKLOG requests

  In the Linux kernel, the following vulnerability has been resolved: crypto: pcrypt - Fix handling of MAY_BACKLOG requests MAY_BACKLOG requests can return EBUSY. Handle them by checking for that value and filtering out EINPROGRESS notifications.

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 19, 2026
• Critical 9.8
  CVE-2026-63993

  vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()

  In the Linux kernel, the following vulnerability has been resolved: vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu() skb_tunnel_check_pmtu() can change skb->head. Reusing old_iph afer skb_tunnel_check_pmtu() can cause an UAF. Use instea…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jul 19, 2026
• Critical 9.1
  CVE-2026-64319

  nvmet-auth: validate reply message payload bounds against transfer length

  In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: validate reply message payload bounds against transfer length nvmet_auth_reply() accesses the variable-length rval[] array using attacker-controlled hl (hash length) and dhvlen (D…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jul 25, 2026
• Critical 9.1
  CVE-2026-89846

  scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read

  In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read In qla2x00_status_entry(), the FWI2 status path advances sense_data and shrinks par_sense_len by rsp_info_len: if (IS_FWI2_CAPAB…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 16, 2026
• High 8.8
  CVE-2026-63831

  mac802154: llsec: add skb_cow_data() before in-place crypto

  In the Linux kernel, the following vulnerability has been resolved: mac802154: llsec: add skb_cow_data() before in-place crypto llsec_do_encrypt_unauth(), llsec_do_encrypt_auth(), llsec_do_decrypt_unauth(), and llsec_do_decrypt_auth() all perform in-place cry…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jul 19, 2026
• High 8.4
  CVE-2026-72243

  selinux: check connect-related permissions on TCP Fast Open

  In the Linux kernel, the following vulnerability has been resolved: selinux: check connect-related permissions on TCP Fast Open Similar to Landlock, SELinux was not updated when TCP Fast Open support was introduced to ensure connect-related permissions are ch…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Aug 15, 2026
• High 7.8
  CVE-2026-43023

  Bluetooth: SCO: fix race conditions in sco_sock_connect()

  In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: fix race conditions in sco_sock_connect() sco_sock_connect() checks sk_state and sk_type without holding the socket lock. Two concurrent connect() syscalls on the same socket …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 1, 2026
• High 7.8
  CVE-2026-46259

  procfs: fix missing RCU protection when reading real_parent in do_task_stat()

  In the Linux kernel, the following vulnerability has been resolved: procfs: fix missing RCU protection when reading real_parent in do_task_stat() When reading /proc/[pid]/stat, do_task_stat() accesses task->real_parent without proper RCU protection, which lea…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jun 3, 2026
• High 7.8
  CVE-2026-63802

  blk-cgroup: fix UAF in __blkcg_rstat_flush()

  In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: fix UAF in __blkcg_rstat_flush() When multiple blkgs in the same blkcg are released concurrently, a use-after-free can occur. The race happens when one blkg's __blkcg_rstat_flush(…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jul 19, 2026
• High 7.8
  CVE-2026-64017

  blk-mq: pop cached request if it is usable

  In the Linux kernel, the following vulnerability has been resolved: blk-mq: pop cached request if it is usable When submitting a bio to blk-mq, if the task should sleep after peeking a cached request, but before it pops it, the plug flushes and calls blk_mq_f…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 19, 2026
• High 7.8
  CVE-2026-74641

  ALSA: usx2y: bound the hwdep mmap fault offset

  In the Linux kernel, the following vulnerability has been resolved: ALSA: usx2y: bound the hwdep mmap fault offset snd_us428ctls_vm_fault() turns the faulting page offset into a kernel address with no bound of any kind: offset = vmf->pgoff << PAGE_SHIFT; vadd…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Aug 22, 2026
• High 7.1
  CVE-2026-46149

  scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show()

  In the Linux kernel, the following vulnerability has been resolved: scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() target_tg_pt_gp_members_show() formats LUN paths with snprintf() into a 256-byte stack buffer, then will memcpy() cu…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 28, 2026
• High 7.0
  CVE-2026-52972

  crypto: af_alg - Cap AEAD AD length to 0x80000000

  In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Cap AEAD AD length to 0x80000000 In order to prevent arithmetic overflows when checking the TX buffer size, cap the associated data length to 0x80000000.

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jun 24, 2026
• Unscored —
  CVE-2025-39797

  xfrm: Duplicate SPI Handling

  In the Linux kernel, the following vulnerability has been resolved: xfrm: Duplicate SPI Handling The issue originates when Strongswan initiates an XFRM_MSG_ALLOCSPI Netlink message, which triggers the kernel function xfrm_alloc_spi(). This function is expecte…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 12, 2025
• Unscored —
  CVE-2026-43020

  Bluetooth: MGMT: validate LTK enc_size on load

  In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate LTK enc_size on load Load Long Term Keys stores the user-provided enc_size and later uses it to size fixed-size stack operations when replying to LE LTK requests. An…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 1, 2026
• Unscored —
  CVE-2026-43450

  netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table()

  In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() nfnl_cthelper_dump_table() has a 'goto restart' that jumps to a label inside the for loop body. When the "last" helpe…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 8, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2400057
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2425039
• report
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• report
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• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2535391
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2540872
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_91489.json
• report
  https://access.redhat.com/security/cve/CVE-2025-39797
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-39797
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-39797
• article
  https://lore.kernel.org/linux-cve-announce/2025091224-CVE-2025-39797-b0f7@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-68745
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-68745
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-68745
• article
  https://lore.kernel.org/linux-cve-announce/2025122416-CVE-2025-68745-69b5@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-43020
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-43020
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-43020
• article
  https://lore.kernel.org/linux-cve-announce/2026050157-CVE-2026-43020-3561@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-43023
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-43023
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-43023
• article
  https://lore.kernel.org/linux-cve-announce/2026050158-CVE-2026-43023-19eb@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-43450
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-43450
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-43450