RHSA-2026:61887HighCVSS 8.8

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

Published
September 1, 2026
Last Modified
September 3, 2026

🔗 CVE IDs covered (34)

CVE-2026-64276 →CVE-2026-64304 →CVE-2026-72069 →CVE-2026-53026 →CVE-2026-53053 →CVE-2026-53391 →CVE-2026-53392 →CVE-2026-72130 →CVE-2026-53189 →CVE-2026-53397 →CVE-2026-64320 →CVE-2026-64490 →CVE-2026-68086 →CVE-2026-45970 →CVE-2026-68166 →CVE-2026-23003 →CVE-2026-43454 →CVE-2026-46120 →CVE-2026-64018 →CVE-2026-64189 →CVE-2025-21834 →CVE-2026-53399 →CVE-2026-63800 →CVE-2026-64438 →CVE-2026-64136 →CVE-2026-64418 →CVE-2026-68480 →CVE-2026-53153 →CVE-2026-53185 →CVE-2026-64277 →CVE-2026-64298 →CVE-2026-64384 →CVE-2026-43450 →CVE-2026-53196 →

📋 Description

CVE-2025-21834 — kernel: seccomp: passthrough uretprobe systemcall without filtering CVE-2026-23003 — kernel: ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() CVE-2026-43450 — kernel: netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() CVE-2026-43454 — kernel: netfilter: nf_tables: Fix for duplicate device in netdev hooks CVE-2026-45970 — kernel: bonding: alb: fix UAF in rlb_arp_recv during bond up/down CVE-2026-46120 — kernel: ip6_gre: Use cached t->net in ip6erspan_changelink() CVE-2026-53026 — kernel: NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg CVE-2026-53053 — kernel: iommu/amd: Fix clone_alias() to use the original device's devid CVE-2026-53153 — kernel: mm/list_lru: drain before clearing xarray entry on reparent CVE-2026-53185 — kernel: zram: fix use-after-free in zram_bvec_write_partial() CVE-2026-53189 — kernel: mm/huge_memory: update file PMD counter before folio_put() CVE-2026-53196 — kernel: USB: serial: io_ti: fix heap overflow in get_manuf_info() CVE-2026-53391 — kernel: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr CVE-2026-53392 — kernel: NFSv4/flexfiles: reject zero filehandle version count CVE-2026-53397 — kernel: nfsd: fix posix_acl leak on SETACL decode failure CVE-2026-53399 — kernel: nfsd: release layout stid on setlease failure CVE-2026-63800 — kernel: pNFS: Fix use-after-free in pnfs_update_layout() CVE-2026-64018 — kernel: net: mana: validate rx_req_idx to prevent out-of-bounds array access CVE-2026-64136 — kernel: smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked() CVE-2026-64189 — kernel: netfilter: ipset: fix race between dump and ip_set_list resize CVE-2026-64276 — kernel: Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count CVE-2026-64277 — kernel: Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count CVE-2026-64298 — kernel: NFSv4: include MAY_WRITE in open permission mask for O_TRUNC CVE-2026-64304 — kernel: crypto: qat - validate RSA CRT component lengths CVE-2026-64320 — kernel: nvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page CVE-2026-64384 — kernel: smb: client: fix change notify replay double-free CVE-2026-64418 — kernel: mm: shrinker: fix shrinker_info teardown race with expansion CVE-2026-64438 — kernel: crypto: qat - fix VF2PF work teardown race in adf_disable_sriov() CVE-2026-64490 — kernel: ALSA: virtio: Validate control metadata from the device CVE-2026-68086 — kernel: mm/khugepaged: write all dirty file folios when collapsing CVE-2026-68166 — kernel: Linux kernel: Arbitrary code execution via userfaultfd shadow stack manipulation CVE-2026-68480 — kernel: AMD-SN-7061: Safe RET Interrupt Vulnerability CVE-2026-72069 — kernel: locking/rt: Fix the incorrect RCU protection in rt_spin_unlock() CVE-2026-72130 — kernel: nvmet-auth: reject short AUTH_RECEIVE buffers

🎯 Affected products200

  • Red Hat Enterprise Linux AppStream (v. 10)
  • Red Hat Enterprise Linux BaseOS (v. 10)
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • Red Hat Enterprise Linux Real Time (v. 10)
  • Red Hat Enterprise Linux Real Time for NFV (v. 10)
  • kernel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-211.50.1.el10_2.src as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-core-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-core-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux Real Time (v. 10)
  • kernel-64k-debug-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debug-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debug-modules-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-modules-core-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-modules-extra-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux Real Time (v. 10)
  • kernel-64k-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-modules-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • +170 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture. Because of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat's CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available. Workaround: To mitigate this issue, prevent module zram from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically. Workaround: To mitigate this issue, prevent module io_ti from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically. Workaround: To mitigate this issue, ensure that in-band DH-HMAC-CHAP authentication is not configured on NVMe-oF targets if it is not strictly required. This vulnerability is only exploitable when this specific authentication mechanism is enabled. Consult NVMe-oF documentation for your specific setup to disable DH-HMAC-CHAP authentication if it is currently enabled and not required.

🔗 References (37)