Red Hat Security Advisory: kernel security update
🔗 CVE IDs covered (4)
📋 Description
CVE-2023-1829 — kernel: Use-after-free vulnerability in the Linux Kernel traffic control index filter CVE-2023-2124 — kernel: OOB access in the Linux kernel's XFS subsystem CVE-2023-3090 — kernel: ipvlan: out-of-bounds write caused by unclear skb->cb CVE-2023-35788 — kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()
🎯 Affected products48
- Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- bpftool-0:4.18.0-147.87.1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- bpftool-0:4.18.0-147.87.1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- bpftool-debuginfo-0:4.18.0-147.87.1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- bpftool-debuginfo-0:4.18.0-147.87.1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-0:4.18.0-147.87.1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-0:4.18.0-147.87.1.el8_1.src as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-0:4.18.0-147.87.1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-abi-whitelists-0:4.18.0-147.87.1.el8_1.noarch as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-core-0:4.18.0-147.87.1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-core-0:4.18.0-147.87.1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debug-0:4.18.0-147.87.1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debug-0:4.18.0-147.87.1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debug-core-0:4.18.0-147.87.1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debug-core-0:4.18.0-147.87.1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debug-debuginfo-0:4.18.0-147.87.1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debug-debuginfo-0:4.18.0-147.87.1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debug-devel-0:4.18.0-147.87.1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debug-devel-0:4.18.0-147.87.1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debug-modules-0:4.18.0-147.87.1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debug-modules-0:4.18.0-147.87.1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debug-modules-extra-0:4.18.0-147.87.1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debug-modules-extra-0:4.18.0-147.87.1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debuginfo-0:4.18.0-147.87.1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debuginfo-0:4.18.0-147.87.1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debuginfo-common-ppc64le-0:4.18.0-147.87.1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-debuginfo-common-x86_64-0:4.18.0-147.87.1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-devel-0:4.18.0-147.87.1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-devel-0:4.18.0-147.87.1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- kernel-doc-0:4.18.0-147.87.1.el8_1.noarch as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
- +18 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: To mitigate this issue, prevent the module cls_tcindex from being loaded. Please see https://access.redhat.com/solutions/41278 on how to blacklist a kernel module to prevent it from loading automatically. Workaround: This flaw can be mitigated by preventing the affected `ipvlan` kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278. Workaround: This flaw can be mitigated by preventing the affected `cls_flower` kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278.
🔗 References (7)
- selfhttps://access.redhat.com/errata/RHSA-2023:4515
- externalhttps://access.redhat.com/security/updates/classification/#important
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2187439
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2188470
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2215768
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2218672
- selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_4515.json