Red Hat Security Advisory: kpatch-patch security update
🔗 CVE IDs covered (4)
📋 Description
CVE-2023-4128 — kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route CVE-2023-31248 — kernel: nf_tables: use-after-free in nft_chain_lookup_byid() CVE-2023-35001 — kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() CVE-2023-35788 — kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()
🎯 Affected products43
- Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_49_1-0:1-6.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_49_1-0:1-6.el9_0.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_49_1-0:1-6.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_49_1-debuginfo-0:1-6.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_49_1-debuginfo-0:1-6.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_49_1-debugsource-0:1-6.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_49_1-debugsource-0:1-6.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_50_2-0:1-5.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_50_2-0:1-5.el9_0.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_50_2-0:1-5.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_50_2-debuginfo-0:1-5.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_50_2-debuginfo-0:1-5.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_50_2-debugsource-0:1-5.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_50_2-debugsource-0:1-5.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_53_1-0:1-4.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_53_1-0:1-4.el9_0.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_53_1-0:1-4.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_53_1-debuginfo-0:1-4.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_53_1-debuginfo-0:1-4.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_53_1-debugsource-0:1-4.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_53_1-debugsource-0:1-4.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_58_1-0:1-3.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_58_1-0:1-3.el9_0.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_58_1-0:1-3.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_58_1-debuginfo-0:1-3.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_58_1-debuginfo-0:1-3.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_58_1-debugsource-0:1-3.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_58_1-debugsource-0:1-3.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- kpatch-patch-5_14_0-70_64_1-0:1-2.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
- +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, it is possible to prevent the affected code from being loaded by blacklisting the kernel netfilter module. For instructions relating to how to blacklist a kernel module refer to: 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-2023:5575
- externalhttps://access.redhat.com/security/updates/classification/#important
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2215768
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2220892
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2220893
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2225511
- selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_5575.json