ALSA-2026:86033
Vulnerability from osv_almalinux – Published: 2026-10-20 00:00 – Updated: 2026-10-21 12:24 – 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: openvswitch: defer tunnel netdev_put to RCU release (CVE-2026-31678)
- kernel: xfrm: espintcp: do not reuse an in-progress partial send (CVE-2026-52935)
- kernel: USB: serial: mxuport: fix memory corruption with small endpoint (CVE-2026-63899)
- kernel: bridge: mcast: Fix a possible use-after-free when removing a bridge port (CVE-2026-64032)
- kernel: tcp: fix stale per-CPU tcp_tw_isn leak enabling ISN prediction (CVE-2026-64024)
- kernel: usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes() (CVE-2026-63962)
- kernel: Bluetooth: hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close (CVE-2026-63974)
- kernel: ipv4: raw: reject IP_HDRINCL packets with ihl < 5 (CVE-2026-64114)
- kernel: ipv4: fib: free fib_alias with kfree_rcu() on insert error path (CVE-2026-64572)
- kernel: Bluetooth: hci_sync: Fix advertising data UAFs (CVE-2026-74509)
- kernel: Linux kernel: Denial of Service due to incorrect GSO state handling in network fragment reassembly (CVE-2026-80590)
- kernel: smb: client: fix OOB read/write from unvalidated DataOffset in coalesce_t2() (CVE-2026-89633)
- kernel: perf: Fix addr_filter_ranges lifetime (CVE-2026-93817)
- kernel: kernel: strparser: use-after-free via msg_timer_work rearm after strp_done() cancellation ()
- kernel: exec: Cleanup POSIX timers right after de_thread() (CVE-2026-98260)
- kernel: ipv4: validate checksum_start before completing checksum (CVE-2026-99999)
Bug Fix(es) and Enhancement(s):
- Batch: z-stream xfrm - almalinux-9.8.z (NST-Core-26W38) (JIRA:AlmaLinux-256697)
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: openvswitch: defer tunnel netdev_put to RCU release (CVE-2026-31678)\n * kernel: xfrm: espintcp: do not reuse an in-progress partial send (CVE-2026-52935)\n * kernel: USB: serial: mxuport: fix memory corruption with small endpoint (CVE-2026-63899)\n * kernel: bridge: mcast: Fix a possible use-after-free when removing a bridge port (CVE-2026-64032)\n * kernel: tcp: fix stale per-CPU tcp_tw_isn leak enabling ISN prediction (CVE-2026-64024)\n * kernel: usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes() (CVE-2026-63962)\n * kernel: Bluetooth: hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close (CVE-2026-63974)\n * kernel: ipv4: raw: reject IP_HDRINCL packets with ihl \u003c 5 (CVE-2026-64114)\n * kernel: ipv4: fib: free fib_alias with kfree_rcu() on insert error path (CVE-2026-64572)\n * kernel: Bluetooth: hci_sync: Fix advertising data UAFs (CVE-2026-74509)\n * kernel: Linux kernel: Denial of Service due to incorrect GSO state handling in network fragment reassembly (CVE-2026-80590)\n * kernel: smb: client: fix OOB read/write from unvalidated DataOffset in coalesce_t2() (CVE-2026-89633)\n * kernel: perf: Fix addr_filter_ranges lifetime (CVE-2026-93817)\n * kernel: kernel: strparser: use-after-free via msg_timer_work rearm after strp_done() cancellation ()\n * kernel: exec: Cleanup POSIX timers right after de_thread() (CVE-2026-98260)\n * kernel: ipv4: validate checksum_start before completing checksum (CVE-2026-99999)\n\n\nBug Fix(es) and Enhancement(s): \n\n * Batch: z-stream xfrm - almalinux-9.8.z (NST-Core-26W38) (JIRA:AlmaLinux-256697)\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-2026:86033",
"modified": "2026-10-21T12:24:14Z",
"published": "2026-10-20T00:00:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:86033"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-31678"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-52935"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-63899"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-63962"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-63974"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-64024"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-64032"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-64114"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-64572"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-74509"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-80590"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-89633"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-93817"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-98260"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-99999"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2461761"
},
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"url": "https://bugzilla.redhat.com/2492098"
},
{
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"url": "https://bugzilla.redhat.com/2502325"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2502332"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2502333"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2502356"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2502462"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2502486"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2511413"
},
{
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"url": "https://bugzilla.redhat.com/2516967"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2532230"
},
{
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"url": "https://bugzilla.redhat.com/2540391"
},
{
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"url": "https://bugzilla.redhat.com/2540872"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2546491"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2553429"
},
{
"type": "ADVISORY",
"url": "https://errata.almalinux.org/9/ALSA-2026-86033.html"
}
],
"related": [
"CVE-2026-31678",
"CVE-2026-52935",
"CVE-2026-63899",
"CVE-2026-64032",
"CVE-2026-64024",
"CVE-2026-63962",
"CVE-2026-63974",
"CVE-2026-64114",
"CVE-2026-64572",
"CVE-2026-74509",
"CVE-2026-80590",
"CVE-2026-89633",
"CVE-2026-93817",
"CVE-2026-98260",
"CVE-2026-99999"
],
"summary": "Important: kernel security, bug fix, and enhancement update"
}
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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
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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.