Red Hat Security Advisory: kernel security, bug fix, and enhancement update
Affects Red Hat kernel security,Source GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 7.1 High · fixed in Red Hat package updates : patch Red Hat kernel security, soon.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in d533425ac1f2925b4fc3e4ed9b9d72362cb23475, bf4454da8b1e712714628c0a0d6e7845bb40790a, bf1feed1a7886af945f92890493aefd2b5c9928a +5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 27 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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Description
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: netfilter: nf_conncount: increase the connection clean up limit to 64 (CVE-2026-45860) * kernel: RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send (CVE-2026-45856) * kernel: Bluetooth: hci_uart: fix UAFs and race conditions in close and init paths (CVE-2026-46275) * kernel: crypto: af_alg - Cap AEAD AD length to 0x80000000 (CVE-2026-52972) * kernel: ipvs: clear the svc scheduler ptr early on edit (CVE-2026-53270) * kernel: Bluetooth: fix UAF in l2cap_sock_cleanup_listen() vs l2cap_conn_del() (CVE-2026-53357) * kernel: net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink (CVE-2026-63829) * kernel: KVM: SVM: Fix page overflow in sev_dbg_crypt() for ENCRYPT path (CVE-2026-63794) * kernel: ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() (CVE-2026-63924) * kernel: ipv6: exthdrs: refresh nh after handling HAO option (CVE-2026-63922) * kernel: ipv6: validate extension header length before copying to cmsg (CVE-2026-63920) * kernel: tcp: fix stale per-CPU tcp_tw_isn leak enabling ISN prediction (CVE-2026-64024) * kernel: l2tp: use refcount_inc_not_zero in l2tp_session_get_by_ifname (CVE-2026-63918) * kernel: ipv6: rpl: fix hdrlen overflow in ipv6_rpl_srh_decompress() (CVE-2026-63984) * kernel: tunnels: do not assume transport header in iptunnel_pmtud_check_icmp() (CVE-2026-63992) * kernel: tunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp[v6]() (CVE-2026-63994) * kernel: netfilter: x_tables: add and use xtables_unregister_table_exit (CVE-2026-64078) * kernel: ipv6: ioam: refresh hdr pointer before ioam6_event() (CVE-2026-64132) * kernel: Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_new_connection_cb() (CVE-2026-64557) * kernel: vxlan: require CAP_NET_ADMIN in the device netns for changelink (CVE-2026-68432) * kernel: ipvs: reload ip header after head reallocation (CVE-2026-68476) * kernel: net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink (CVE-2026-72052) * kernel: netfilter: nft_lookup: fix catchall element handling with inverted lookups (CVE-2026-72320) * kernel: netfilter: nf_queue: pin bridge device while NFQUEUE holds fake dst (CVE-2026-72255) * kernel: KVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active (CVE-2026-74516) * kernel: packet: use consistent hard_header_len in non-ring send paths () * kernel: packet: use consistent hard_header_len in non-ring send paths (CVE-2026-74582) * kernel: ipvs: clear IPv4 options after rebasing tunnel ICMP errors (CVE-2026-74669) * kernel: netfilter: flowtable: publish GC-visible tuple last (CVE-2026-74746) * kernel: ipv6: fix use-after-free in ip6_finish_output2() (CVE-2026-80792) * kernel: futex: Fix race on the initial mm->futex.phash.ref allocation (CVE-2026-80775) * kernel: KVM: s390: vsie: zero stale crypto bits (CVE-2026-80921) * kernel: nvme: add missing SRCU grace period in error path (CVE-2026-89972) * kernel: nvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed() (CVE-2026-90227) * kernel: netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack() (CVE-2026-97417) * kernel: netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state (CVE-2026-93288) Bug Fix(es) and Enhancement(s): * wifi card breaks using FIPS (JIRA:RHEL-257457) * RHEL10.0 - kernel: CPU hotplug unsupported by CPUMF [rhel-10.2.z] (JIRA:RHEL-270888) 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.
References
- access.redhat.com/errata/RHSA-2026:76738 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2482115 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2482129 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2486398 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2492364 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2492853 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2496574 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502230 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502241 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502326 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502327 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502330 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502333 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502384 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502395 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502431 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502444 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502554 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502619 (opens in a new tab)