ALSA-2026:91565 (CVE-2026-53236)
Vulnerability from osv_almalinux – Published: 2026-10-28 00:00 – Updated: 2026-10-28 13:39 – 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: tcp: restrict SO_ATTACH_FILTER to priv users (CVE-2026-53236)
- kernel: fuse: re-lock request before replacing page cache folio (CVE-2026-53388)
- kernel: net: shaper: rework the VALID marking (again) (CVE-2026-64027)
- kernel: net/handshake: hand off the pinned file reference to accept_doit (CVE-2026-63979)
- kernel: net/handshake: Drain pending requests at net namespace exit (CVE-2026-63978)
- kernel: af_unix: Fix UAF read of tail->len in unix_stream_data_wait() (CVE-2026-64109)
- kernel: net/handshake: Take a long-lived file reference at submit (CVE-2026-64523)
- kernel: net: gro: fix double aggregation of flush-marked skbs (CVE-2026-68136)
- kernel: net/packet: avoid fanout hook re-registration after unregister (CVE-2026-68338)
- kernel: scsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE (CVE-2026-72083)
- kernel: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled (CVE-2026-74515)
- kernel: net: smc: fix splice entry lifetime imbalance in smc_rx_splice (CVE-2026-74631)
- kernel: usb: usbfs: fix use-after-free of usb_device in usbdev_release() (CVE-2026-80824)
- kernel: smb: client: clear setuid/setgid bit on write with cifsacl/modefromsid/posix extensions (CVE-2026-89638)
- kernel: vfio/pci: clear vdev->msi_perm after freeing it on init failure (CVE-2026-89777)
- kernel: md/raid5-ppl: fix use-after-free in ppl_do_flush() (CVE-2026-93262)
Bug Fix(es) and Enhancement(s):
- x86/microcode: Add platform mask to Intel microcode "old" list [AlmaLinux-10] [almalinux-10.2.z] (JIRA:AlmaLinux-212778)
- net: NULL pointer deref kernel panic in fib6_walk_continue under heavy VRF churn [almalinux-10.2.z] (JIRA:AlmaLinux-245489)
- backport fixes for lockdep issues reported with rt-debug [almalinux-10.2.z] (JIRA:AlmaLinux-259937)
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: tcp: restrict SO_ATTACH_FILTER to priv users (CVE-2026-53236)\n * kernel: fuse: re-lock request before replacing page cache folio (CVE-2026-53388)\n * kernel: net: shaper: rework the VALID marking (again) (CVE-2026-64027)\n * kernel: net/handshake: hand off the pinned file reference to accept_doit (CVE-2026-63979)\n * kernel: net/handshake: Drain pending requests at net namespace exit (CVE-2026-63978)\n * kernel: af_unix: Fix UAF read of tail-\u003elen in unix_stream_data_wait() (CVE-2026-64109)\n * kernel: net/handshake: Take a long-lived file reference at submit (CVE-2026-64523)\n * kernel: net: gro: fix double aggregation of flush-marked skbs (CVE-2026-68136)\n * kernel: net/packet: avoid fanout hook re-registration after unregister (CVE-2026-68338)\n * kernel: scsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE (CVE-2026-72083)\n * kernel: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled (CVE-2026-74515)\n * kernel: net: smc: fix splice entry lifetime imbalance in smc_rx_splice (CVE-2026-74631)\n * kernel: usb: usbfs: fix use-after-free of usb_device in usbdev_release() (CVE-2026-80824)\n * kernel: smb: client: clear setuid/setgid bit on write with cifsacl/modefromsid/posix extensions (CVE-2026-89638)\n * kernel: vfio/pci: clear vdev-\u003emsi_perm after freeing it on init failure (CVE-2026-89777)\n * kernel: md/raid5-ppl: fix use-after-free in ppl_do_flush() (CVE-2026-93262)\n\n\nBug Fix(es) and Enhancement(s): \n\n * x86/microcode: Add platform mask to Intel microcode \"old\" list [AlmaLinux-10] [almalinux-10.2.z] (JIRA:AlmaLinux-212778)\n * net: NULL pointer deref kernel panic in fib6_walk_continue under heavy VRF churn [almalinux-10.2.z] (JIRA:AlmaLinux-245489)\n * backport fixes for lockdep issues reported with rt-debug [almalinux-10.2.z] (JIRA:AlmaLinux-259937)\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-2026:91565",
"modified": "2026-10-28T13:39:37Z",
"published": "2026-10-28T00:00:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:91565"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-53236"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-53388"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-63978"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-63979"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-64027"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-64109"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-64523"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-68136"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-68338"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-72083"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-74515"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-74631"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-80824"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-89638"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-89777"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-93262"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2492709"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2502255"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2502341"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2502376"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2502382"
},
{
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"url": "https://bugzilla.redhat.com/2502615"
},
{
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"url": "https://bugzilla.redhat.com/2507122"
},
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"url": "https://bugzilla.redhat.com/2513163"
},
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"url": "https://bugzilla.redhat.com/2513264"
},
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"url": "https://bugzilla.redhat.com/2516579"
},
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"url": "https://bugzilla.redhat.com/2517006"
},
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"url": "https://bugzilla.redhat.com/2521413"
},
{
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"url": "https://bugzilla.redhat.com/2528642"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2532122"
},
{
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"url": "https://bugzilla.redhat.com/2535066"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2540323"
},
{
"type": "ADVISORY",
"url": "https://errata.almalinux.org/10/ALSA-2026-91565.html"
}
],
"related": [
"CVE-2026-53236",
"CVE-2026-53388",
"CVE-2026-63978",
"CVE-2026-63979",
"CVE-2026-64027",
"CVE-2026-64109",
"CVE-2026-64523",
"CVE-2026-68136",
"CVE-2026-68338",
"CVE-2026-72083",
"CVE-2026-74515",
"CVE-2026-74631",
"CVE-2026-80824",
"CVE-2026-89638",
"CVE-2026-89777",
"CVE-2026-93262"
],
"schema_version": "1.7.0",
"summary": "Important: kernel security, bug fix, and enhancement update",
"upstream": [
"CVE-2026-53236",
"CVE-2026-53388",
"CVE-2026-63978",
"CVE-2026-63979",
"CVE-2026-64027",
"CVE-2026-64109",
"CVE-2026-64523",
"CVE-2026-68136",
"CVE-2026-68338",
"CVE-2026-72083",
"CVE-2026-74515",
"CVE-2026-74631",
"CVE-2026-80824",
"CVE-2026-89638",
"CVE-2026-89777",
"CVE-2026-93262"
]
}
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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.
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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.
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.