Red Hat Security Advisory: kernel-rt security update
🔗 CVE IDs covered (9)
📋 Description
CVE-2022-50341 — kernel: cifs: fix oops during encryption CVE-2022-50403 — kernel: ext4: fix undefined behavior in bit shift for ext4_check_flag_values CVE-2023-53297 — kernel: Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp CVE-2023-53365 — kernel: ip6mr: Fix skb_under_panic in ip6mr_cache_report() CVE-2023-53393 — kernel: RDMA/mlx5: Fix mlx5_ib_get_hw_stats when used for device CVE-2025-38729 — kernel: ALSA: usb-audio: Validate UAC3 power domain descriptors, too CVE-2025-39757 — kernel: ALSA: usb-audio: Validate UAC3 cluster segment descriptors CVE-2025-39817 — kernel: efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare CVE-2025-40300 — kernel: x86/vmscape: Add conditional IBPB mitigation
🎯 Affected products32
- Red Hat Enterprise Linux NFV E4S (v.9.0)
- Red Hat Enterprise Linux Real Time E4S (v.9.0)
- kernel-rt-0:5.14.0-70.155.1.rt21.227.el9_0.src as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-0:5.14.0-70.155.1.rt21.227.el9_0.src as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
- kernel-rt-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
- kernel-rt-core-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-core-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
- kernel-rt-debug-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-debug-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
- kernel-rt-debug-core-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-debug-core-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
- kernel-rt-debug-debuginfo-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-debug-debuginfo-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
- kernel-rt-debug-devel-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-debug-devel-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
- kernel-rt-debug-kvm-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-debug-modules-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-debug-modules-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
- kernel-rt-debug-modules-extra-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-debug-modules-extra-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
- kernel-rt-debuginfo-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-debuginfo-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
- kernel-rt-debuginfo-common-x86_64-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-debuginfo-common-x86_64-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
- kernel-rt-devel-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-devel-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
- kernel-rt-kvm-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-modules-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
- kernel-rt-modules-0:5.14.0-70.155.1.rt21.227.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
- +2 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. Workaround: Mitigation for this issue is either not available or the currently available options don't 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 IBPB each time the kernel returns to QEMU.
🔗 References (12)
- selfhttps://access.redhat.com/errata/RHSA-2025:22087
- externalhttps://access.redhat.com/security/updates/classification/#moderate
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2393164
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2394615
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2394627
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2395681
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2395805
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2395879
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2396130
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2396376
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2396494
- selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_22087.json