Issued at: 2026-09-09
Updated at: 2026-09-10
Advisory content derived from Red Hat RHSA-2026:64775, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Important: kernel security, bug fix, and enhancement update
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: can: bcm: add locking for bcm_op runtime updates (CVE-2025-38004)
* kernel: ipv6: add NULL checks for idev in SRv6 paths (CVE-2026-23442)
* kernel: udp: Fix wildcard bind conflict check when using hash2 (CVE-2026-31503)
* kernel: ipv6: prevent possible UaF in addrconf_permanent_addr() (CVE-2026-43339)
* kernel: tcp: call sk_data_ready() after listener migration (CVE-2026-46015)
* kernel: inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP (CVE-2026-46266)
* kernel: flow_dissector: do not dissect PPPoE PFC frames (CVE-2026-46306)
* kernel: io_uring/poll: fix signed comparison in io_poll_get_ownership() (CVE-2026-52933)
* kernel: ppp: require CAP_NET_ADMIN in target netns for unattached ioctls (CVE-2026-53075)
* kernel: KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation (CVE-2026-53277)
* kernel: ipv6: sit: reload inner IPv6 header after GSO offloads (CVE-2026-53228)
* kernel: net: add pskb_may_pull() to skb_gro_receive_list() (CVE-2026-53235)
* kernel: net: guard timestamp cmsgs to real error queue skbs (CVE-2026-53223)
* kernel: ipv6: mcast: Fix use-after-free when processing MLD queries (CVE-2026-53275)
* kernel: ipv6: anycast: insert aca into global hash under idev->lock (CVE-2026-53259)
* kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() (CVE-2026-64002)
* kernel: vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu() (CVE-2026-63993)
* kernel: fuse: clear intr_entry in fuse_resend and fuse_remove_pending_req (CVE-2026-64265)
* kernel: nvmet-auth: validate reply message payload bounds against transfer length (CVE-2026-64319)
* kernel: KVM: arm64: Bound used_lrs when flushing the pKVM hyp vCPU (CVE-2026-64287)
* kernel: rhashtable: clear stale iter->p on table restart (CVE-2026-64563)
* kernel: smb: client: fix double-free in SMB2_close() replay (CVE-2026-64597)
Bug Fix(es) and Enhancement(s):
* Customer needs "netfilter: nfnetlink_queue: optimize verdict lookup with hash table" patch [Rocky Linux 10.2] (JIRA:Rocky Linux-132852)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.