ALSA-2026:76738 (CVE-2026-45856)
Vulnerability from osv_almalinux – Published: 2026-10-06 00:00 – Updated: 2026-10-26 13:00 – 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": "2026-10-26T13:00:57Z",
"published": "2026-10-06T00:00:00Z",
"references": [
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"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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"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-2026-45856",
"CVE-2026-45860",
"CVE-2026-46275",
"CVE-2026-52972",
"CVE-2026-53270",
"CVE-2026-53357",
"CVE-2026-63794",
"CVE-2026-63829",
"CVE-2026-63918",
"CVE-2026-63920",
"CVE-2026-63922",
"CVE-2026-63924",
"CVE-2026-63984",
"CVE-2026-63992",
"CVE-2026-63994",
"CVE-2026-64024",
"CVE-2026-64078",
"CVE-2026-64132",
"CVE-2026-64557",
"CVE-2026-68432",
"CVE-2026-68476",
"CVE-2026-72052",
"CVE-2026-72255",
"CVE-2026-72320",
"CVE-2026-74516",
"CVE-2026-74582",
"CVE-2026-74669",
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"CVE-2026-80792",
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"CVE-2026-89972",
"CVE-2026-90227",
"CVE-2026-93288",
"CVE-2026-97417"
],
"schema_version": "1.7.0",
"summary": "Important: kernel security, bug fix, and enhancement update",
"upstream": [
"CVE-2026-45856",
"CVE-2026-45860",
"CVE-2026-46275",
"CVE-2026-52972",
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"CVE-2026-53357",
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"CVE-2026-63918",
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"CVE-2026-63922",
"CVE-2026-63924",
"CVE-2026-63984",
"CVE-2026-63992",
"CVE-2026-63994",
"CVE-2026-64024",
"CVE-2026-64078",
"CVE-2026-64132",
"CVE-2026-64557",
"CVE-2026-68432",
"CVE-2026-68476",
"CVE-2026-72052",
"CVE-2026-72255",
"CVE-2026-72320",
"CVE-2026-74516",
"CVE-2026-74582",
"CVE-2026-74669",
"CVE-2026-74746",
"CVE-2026-80775",
"CVE-2026-80792",
"CVE-2026-80921",
"CVE-2026-89972",
"CVE-2026-90227",
"CVE-2026-93288",
"CVE-2026-97417"
]
}
Loading…
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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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
model, served locally by ML-Gateway.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.