Red Hat Security Advisory: kpatch-patch security update
🔗 CVE IDs covered (3)
📋 Description
CVE-2023-3609 — kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails CVE-2023-3776 — kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function CVE-2023-4128 — kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route
🎯 Affected products43
- Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_103_1-0:1-1.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_103_1-0:1-1.el8_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_103_1-0:1-1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_103_1-debuginfo-0:1-1.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_103_1-debuginfo-0:1-1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_103_1-debugsource-0:1-1.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_103_1-debugsource-0:1-1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_82_1-0:1-5.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_82_1-0:1-5.el8_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_82_1-0:1-5.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_82_1-debuginfo-0:1-5.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_82_1-debuginfo-0:1-5.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_82_1-debugsource-0:1-5.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_82_1-debugsource-0:1-5.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_86_2-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_86_2-0:1-4.el8_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_86_2-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_86_2-debuginfo-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_86_2-debuginfo-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_86_2-debugsource-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_86_2-debugsource-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_88_1-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_88_1-0:1-4.el8_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_88_1-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_88_1-debuginfo-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_88_1-debuginfo-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_88_1-debugsource-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_88_1-debugsource-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- kpatch-patch-4_18_0-305_91_1-0:1-3.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
- +13 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 Workaround: To mitigate this issue, prevent module cls_u32 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 cls_fw 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 (6)
- selfhttps://access.redhat.com/errata/RHSA-2023:5775
- externalhttps://access.redhat.com/security/updates/classification/#important
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2225097
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2225201
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2225511
- selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_5775.json