RHSA-2026:65708HighCVSS 7.8

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

Published
September 9, 2026
Last Modified
September 9, 2026

🔗 CVE IDs covered (8)

CVE-2026-53185 →CVE-2026-53196 →CVE-2026-63886 →CVE-2026-64191 →CVE-2026-64560 →CVE-2026-45998 →CVE-2026-46155 →CVE-2026-52933 →

📋 Description

CVE-2026-45998 — kernel: rxrpc: Fix potential UAF after skb_unshare() failure CVE-2026-46155 — kernel: smb/client: fix out-of-bounds read in smb2_compound_op() CVE-2026-52933 — kernel: io_uring/poll: fix signed comparison in io_poll_get_ownership() CVE-2026-53185 — kernel: zram: fix use-after-free in zram_bvec_write_partial() CVE-2026-53196 — kernel: USB: serial: io_ti: fix heap overflow in get_manuf_info() CVE-2026-63886 — kernel: scsi: target: iscsi: Validate CHAP_R length before base64 decode CVE-2026-64191 — kernel: i2c: stub: Reject I2C block transfers with invalid length CVE-2026-64560 — kernel: posix-cpu-timers: Prevent UAF caused by non-leader exec() race

🎯 Affected products200

  • Red Hat CodeReady Linux Builder EUS (v.9.6)
  • Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • Red Hat Enterprise Linux Real Time EUS (v.9.6)
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)
  • kernel-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-0:5.14.0-570.140.1.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-0:5.14.0-570.140.1.el9_6.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-0:5.14.0-570.140.1.el9_6.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-0:5.14.0-570.140.1.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-64k-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-64k-core-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-64k-debug-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-64k-debug-core-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-64k-debug-debuginfo-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • kernel-64k-debug-debuginfo-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • kernel-64k-debug-debuginfo-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-64k-debug-debuginfo-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.6)
  • kernel-64k-debug-devel-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • kernel-64k-debug-devel-matched-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • kernel-64k-debug-modules-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-64k-debug-modules-core-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-64k-debug-modules-extra-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-64k-debuginfo-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • kernel-64k-debuginfo-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • kernel-64k-debuginfo-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kernel-64k-debuginfo-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.6)
  • kernel-64k-devel-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • kernel-64k-devel-matched-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • kernel-64k-modules-0:5.14.0-570.140.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • +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: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. 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.

🔗 References (11)