# RHSA-2026:68531: Security update for 23 packages RHSA-2026:68531, released September 19, 2026, fixes 22 CVEs across 23 products. None of them is reported as exploited. Patch Radar priority: Urgent. - Web page: https://patchblox.com/security/fix/linux/rhsa-2026-68531 - Platform: Linux - Released: Sep 19, 2026 - Priority: Urgent (Closes CVE-2026-46266, rated Critical) - CVEs: 22, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://access.redhat.com/errata/RHSA-2026:68531 ## Applies to | Product | Release | Fixed in | |---|---|---| | [bpftool](https://patchblox.com/security/data/product/linux/bpftool.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-abi-stablelists](https://patchblox.com/security/data/product/linux/kernel-abi-stablelists.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-core](https://patchblox.com/security/data/product/linux/kernel-core.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-debug](https://patchblox.com/security/data/product/linux/kernel-debug.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-debug-core](https://patchblox.com/security/data/product/linux/kernel-debug-core.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-debug-devel](https://patchblox.com/security/data/product/linux/kernel-debug-devel.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-debug-modules](https://patchblox.com/security/data/product/linux/kernel-debug-modules.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-debug-modules-extra](https://patchblox.com/security/data/product/linux/kernel-debug-modules-extra.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-devel](https://patchblox.com/security/data/product/linux/kernel-devel.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-doc](https://patchblox.com/security/data/product/linux/kernel-doc.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-modules](https://patchblox.com/security/data/product/linux/kernel-modules.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-modules-extra](https://patchblox.com/security/data/product/linux/kernel-modules-extra.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-tools](https://patchblox.com/security/data/product/linux/kernel-tools.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-tools-libs](https://patchblox.com/security/data/product/linux/kernel-tools-libs.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-tools-libs-devel](https://patchblox.com/security/data/product/linux/kernel-tools-libs-devel.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-zfcpdump](https://patchblox.com/security/data/product/linux/kernel-zfcpdump.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-zfcpdump-core](https://patchblox.com/security/data/product/linux/kernel-zfcpdump-core.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-zfcpdump-devel](https://patchblox.com/security/data/product/linux/kernel-zfcpdump-devel.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-zfcpdump-modules](https://patchblox.com/security/data/product/linux/kernel-zfcpdump-modules.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [kernel-zfcpdump-modules-extra](https://patchblox.com/security/data/product/linux/kernel-zfcpdump-modules-extra.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [perf](https://patchblox.com/security/data/product/linux/perf.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | | [python3-perf](https://patchblox.com/security/data/product/linux/python3-perf.md) | RHEL 8 | 0:4.18.0-553.164.1.el8_10 | ## CVEs this fix closes | CVE | Priority | Title | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2026-46266](https://patchblox.com/security/data/cve/CVE-2026-46266.md) | Urgent | linux: In the Linux kernel, the following vulnerability has been resolved: inet: RAW sockets using IPPROTO_RAW MUST drop in... | 9.1 | 0.0047 | | | [CVE-2026-53075](https://patchblox.com/security/data/cve/CVE-2026-53075.md) | Urgent | ppp: require CAP_NET_ADMIN in target netns for unattached ioctls | 9.8 | 0.0027 | | | [CVE-2026-68143](https://patchblox.com/security/data/cve/CVE-2026-68143.md) | Urgent | net: slip: serialize receive against buffer reallocation | 9.8 | 0.0011 | | | [CVE-2026-53176](https://patchblox.com/security/data/cve/CVE-2026-53176.md) | High | IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN | 9.8 | 0.0076 | | | [CVE-2026-63919](https://patchblox.com/security/data/cve/CVE-2026-63919.md) | High | kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system | 8.8 | 0.0065 | | | [CVE-2026-53228](https://patchblox.com/security/data/cve/CVE-2026-53228.md) | High | ipv6: sit: reload inner IPv6 header after GSO offloads | 9.8 | 0.0058 | | | [CVE-2026-53268](https://patchblox.com/security/data/cve/CVE-2026-53268.md) | High | netfilter: conntrack_irc: fix possible out-of-bounds read | 8.2 | 0.0052 | | | [CVE-2026-68426](https://patchblox.com/security/data/cve/CVE-2026-68426.md) | High | xfrm: fix stale skb->prev after async crypto steals a GSO segment | 9.8 | 0.0050 | | | [CVE-2026-43233](https://patchblox.com/security/data/cve/CVE-2026-43233.md) | High | kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: n... | 8.2 | 0.0046 | | | [CVE-2026-46306](https://patchblox.com/security/data/cve/CVE-2026-46306.md) | High | flow_dissector: do not dissect PPPoE PFC frames | 8.1 | 0.0045 | | | [CVE-2026-53131](https://patchblox.com/security/data/cve/CVE-2026-53131.md) | High | netfilter: require Ethernet MAC header before using eth_hdr() | 9.4 | 0.0044 | | | [CVE-2026-52920](https://patchblox.com/security/data/cve/CVE-2026-52920.md) | High | netfilter: xt_policy: fix strict mode inbound policy matching | 8.3 | 0.0030 | | | [CVE-2026-53275](https://patchblox.com/security/data/cve/CVE-2026-53275.md) | High | ipv6: mcast: Fix use-after-free when processing MLD queries | 8.8 | 0.0026 | | | [CVE-2026-31663](https://patchblox.com/security/data/cve/CVE-2026-31663.md) | High | xfrm: hold dev ref until after transport_finish NF_HOOK | 8.8 | 0.0022 | | | [CVE-2026-63917](https://patchblox.com/security/data/cve/CVE-2026-63917.md) | High | kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system | 8.8 | 0.0017 | | | [CVE-2026-63921](https://patchblox.com/security/data/cve/CVE-2026-63921.md) | High | kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system | 8.8 | 0.0016 | | | [CVE-2026-43339](https://patchblox.com/security/data/cve/CVE-2026-43339.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent possible UaF in addrconf_permanent_... | 8.1 | 0.0016 | | | [CVE-2026-53223](https://patchblox.com/security/data/cve/CVE-2026-53223.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: net: guard timestamp cmsgs to real error queue sk... | 8.1 | 0.0014 | | | [CVE-2026-64002](https://patchblox.com/security/data/cve/CVE-2026-64002.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: ipv4: free net->ipv4.sysctl_local_reserved_ports... | 8.8 | 0.0013 | | | [CVE-2026-23103](https://patchblox.com/security/data/cve/CVE-2026-23103.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: ipvlan: Make the addrs_lock be per port Make the... | 8.8 | 0.0013 | | | [CVE-2026-53239](https://patchblox.com/security/data/cve/CVE-2026-53239.md) | High | xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx() | 8.8 | 0.0010 | | | [CVE-2026-53192](https://patchblox.com/security/data/cve/CVE-2026-53192.md) | High | ALSA: timer: Fix UAF at snd_timer_user_params() | 8.8 | 0.0010 | | --- Data as of 2026-11-07T18:46:35Z UTC. 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