ALSA-2026:76738
Vulnerability from osv_almalinux – Published: 2026-10-06 00:00 – Updated: 2026-10-13 09:28 – Source website
VLAI
Summary
Important: kernel security, bug fix, and enhancement update
Details
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_icmpv6 (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:AlmaLinux-257457)
- AlmaLinux10.0 - kernel: CPU hotplug unsupported by CPUMF [almalinux-10.2.z] (JIRA:AlmaLinux-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
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"details": "The kernel packages contain the Linux kernel, the core of any Linux operating system. \n\nSecurity Fix(es): \n\n * kernel: netfilter: nf_conncount: increase the connection clean up limit to 64 (CVE-2026-45860)\n * kernel: RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send (CVE-2026-45856)\n * kernel: Bluetooth: hci_uart: fix UAFs and race conditions in close and init paths (CVE-2026-46275)\n * kernel: crypto: af_alg - Cap AEAD AD length to 0x80000000 (CVE-2026-52972)\n * kernel: ipvs: clear the svc scheduler ptr early on edit (CVE-2026-53270)\n * kernel: Bluetooth: fix UAF in l2cap_sock_cleanup_listen() vs l2cap_conn_del() (CVE-2026-53357)\n * kernel: net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink (CVE-2026-63829)\n * kernel: KVM: SVM: Fix page overflow in sev_dbg_crypt() for ENCRYPT path (CVE-2026-63794)\n * kernel: ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() (CVE-2026-63924)\n * kernel: ipv6: exthdrs: refresh nh after handling HAO option (CVE-2026-63922)\n * kernel: ipv6: validate extension header length before copying to cmsg (CVE-2026-63920)\n * kernel: tcp: fix stale per-CPU tcp_tw_isn leak enabling ISN prediction (CVE-2026-64024)\n * kernel: l2tp: use refcount_inc_not_zero in l2tp_session_get_by_ifname (CVE-2026-63918)\n * kernel: ipv6: rpl: fix hdrlen overflow in ipv6_rpl_srh_decompress() (CVE-2026-63984)\n * kernel: tunnels: do not assume transport header in iptunnel_pmtud_check_icmp() (CVE-2026-63992)\n * kernel: tunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp[v6]() (CVE-2026-63994)\n * kernel: netfilter: x_tables: add and use xtables_unregister_table_exit (CVE-2026-64078)\n * kernel: ipv6: ioam: refresh hdr pointer before ioam6_event() (CVE-2026-64132)\n * kernel: Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_new_connection_cb() (CVE-2026-64557)\n * kernel: vxlan: require CAP_NET_ADMIN in the device netns for changelink (CVE-2026-68432)\n * kernel: ipvs: reload ip header after head reallocation (CVE-2026-68476)\n * kernel: net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink (CVE-2026-72052)\n * kernel: netfilter: nft_lookup: fix catchall element handling with inverted lookups (CVE-2026-72320)\n * kernel: netfilter: nf_queue: pin bridge device while NFQUEUE holds fake dst (CVE-2026-72255)\n * kernel: KVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active (CVE-2026-74516)\n * kernel: packet: use consistent hard_header_len in non-ring send paths ()\n * kernel: packet: use consistent hard_header_len in non-ring send paths (CVE-2026-74582)\n * kernel: ipvs: clear IPv4 options after rebasing tunnel ICMP errors (CVE-2026-74669)\n * kernel: netfilter: flowtable: publish GC-visible tuple last (CVE-2026-74746)\n * kernel: ipv6: fix use-after-free in ip6_finish_output2() (CVE-2026-80792)\n * kernel: futex: Fix race on the initial mm-\u003efutex.phash.ref allocation (CVE-2026-80775)\n * kernel: KVM: s390: vsie: zero stale crypto bits (CVE-2026-80921)\n * kernel: nvme: add missing SRCU grace period in error path (CVE-2026-89972)\n * kernel: nvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed() (CVE-2026-90227)\n * kernel: netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack() (CVE-2026-97417)\n * kernel: netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state (CVE-2026-93288)\n\n\nBug Fix(es) and Enhancement(s): \n\n * wifi card breaks using FIPS (JIRA:AlmaLinux-257457)\n * AlmaLinux10.0 - kernel: CPU hotplug unsupported by CPUMF [almalinux-10.2.z] (JIRA:AlmaLinux-270888)\n\n\nFor 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.\n",
"id": "ALSA-2026:76738",
"modified": "2026-10-13T09:28:28Z",
"published": "2026-10-06T00:00:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:76738"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-45856"
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"url": "https://access.redhat.com/security/cve/CVE-2026-45860"
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"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-46275"
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"url": "https://access.redhat.com/security/cve/CVE-2026-52972"
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"url": "https://access.redhat.com/security/cve/CVE-2026-53270"
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"url": "https://access.redhat.com/security/cve/CVE-2026-53357"
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"url": "https://access.redhat.com/security/cve/CVE-2026-63794"
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"url": "https://access.redhat.com/security/cve/CVE-2026-63829"
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],
"related": [
"CVE-2026-45860",
"CVE-2026-45856",
"CVE-2026-46275",
"CVE-2026-52972",
"CVE-2026-53270",
"CVE-2026-53357",
"CVE-2026-63829",
"CVE-2026-63794",
"CVE-2026-63924",
"CVE-2026-63922",
"CVE-2026-63920",
"CVE-2026-64024",
"CVE-2026-63918",
"CVE-2026-63984",
"CVE-2026-63992",
"CVE-2026-63994",
"CVE-2026-64078",
"CVE-2026-64132",
"CVE-2026-64557",
"CVE-2026-68432",
"CVE-2026-68476",
"CVE-2026-72052",
"CVE-2026-72320",
"CVE-2026-72255",
"CVE-2026-74516",
"CVE-2026-74582",
"CVE-2026-74669",
"CVE-2026-74746",
"CVE-2026-80792",
"CVE-2026-80775",
"CVE-2026-80921",
"CVE-2026-89972",
"CVE-2026-90227",
"CVE-2026-97417",
"CVE-2026-93288"
],
"summary": "Important: kernel security, bug fix, and enhancement update"
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.