SUSE-SU-2026:3821-1
Vulnerability from csaf_suse - Published: 2026-08-26 11:06 - Updated: 2026-09-17 16:43Summary
Security update for the Linux Kernel (Live Patch 19 for SUSE Linux Enterprise 15 SP7)
Severity
Important
Notes
Title of the patch: Security update for the Linux Kernel (Live Patch 19 for SUSE Linux Enterprise 15 SP7)
Description of the patch:
This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.53.73 fixes various security issues:
The following security issues were fixed:
- CVE-2026-64530: net/sched: cls_api: Handle TC_ACT_CONSUMED in tcf_qevent_hand (bsc#1271867).
- CVE-2026-64600: xfs: resample the data fork mapping after cycling ILOCK (RefluXFS) (bsc#1271543).
Patchnames: SUSE-2026-3821,SUSE-SLE-Module-Live-Patching-15-SP7-2026-3821
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
Affected products
Recommended
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.x86_64 | — |
Vendor Fix
|
Threats
Impact
important
7.8 (High)
Affected products
Recommended
3 products, the same list as for
CVE-2026-64530
Threats
Impact
important
References
14 references
{
"document": {
"aggregate_severity": {
"namespace": "https://www.suse.com/support/security/rating/",
"text": "important"
},
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"text": "Copyright 2024 SUSE LLC. All rights reserved.",
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en",
"notes": [
{
"category": "summary",
"text": "Security update for the Linux Kernel (Live Patch 19 for SUSE Linux Enterprise 15 SP7)",
"title": "Title of the patch"
},
{
"category": "description",
"text": "\nThis update for the SUSE Linux Enterprise Kernel 6.4.0-150700.53.73 fixes various security issues:\n\nThe following security issues were fixed:\n\n- CVE-2026-64530: net/sched: cls_api: Handle TC_ACT_CONSUMED in tcf_qevent_hand (bsc#1271867).\n- CVE-2026-64600: xfs: resample the data fork mapping after cycling ILOCK (RefluXFS) (bsc#1271543).\n",
"title": "Description of the patch"
},
{
"category": "details",
"text": "SUSE-2026-3821,SUSE-SLE-Module-Live-Patching-15-SP7-2026-3821",
"title": "Patchnames"
},
{
"category": "legal_disclaimer",
"text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
"title": "Terms of use"
}
],
"publisher": {
"category": "vendor",
"contact_details": "https://www.suse.com/support/security/contact/",
"name": "SUSE Product Security Team",
"namespace": "https://www.suse.com/"
},
"references": [
{
"category": "external",
"summary": "SUSE ratings",
"url": "https://www.suse.com/support/security/rating/"
},
{
"category": "self",
"summary": "URL of this CSAF notice",
"url": "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_3821-1.json"
},
{
"category": "self",
"summary": "URL for SUSE-SU-2026:3821-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-20263821-1/"
},
{
"category": "self",
"summary": "E-Mail link for SUSE-SU-2026:3821-1",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-August/028595.html"
},
{
"category": "self",
"summary": "SUSE Bug 1271543",
"url": "https://bugzilla.suse.com/1271543"
},
{
"category": "self",
"summary": "SUSE Bug 1271867",
"url": "https://bugzilla.suse.com/1271867"
},
{
"category": "self",
"summary": "SUSE CVE CVE-2026-64530 page",
"url": "https://www.suse.com/security/cve/CVE-2026-64530/"
},
{
"category": "self",
"summary": "SUSE CVE CVE-2026-64600 page",
"url": "https://www.suse.com/security/cve/CVE-2026-64600/"
}
],
"title": "Security update for the Linux Kernel (Live Patch 19 for SUSE Linux Enterprise 15 SP7)",
"tracking": {
"current_release_date": "2026-09-17T16:43:40Z",
"generator": {
"date": "2026-08-26T11:06:25Z",
"engine": {
"name": "cve-database.git:bin/generate-csaf.pl",
"version": "1"
}
},
"id": "SUSE-SU-2026:3821-1",
"initial_release_date": "2026-08-26T11:06:25Z",
"revision_history": [
{
"date": "2026-08-26T11:06:25Z",
"number": "1",
"summary": "Current version"
},
{
"date": "2026-09-16T19:49:54Z",
"number": "2",
"summary": "unknown changes"
},
{
"date": "2026-09-16T20:52:57Z",
"number": "3",
"summary": "unknown changes"
},
{
"date": "2026-09-17T16:43:40Z",
"number": "4",
"summary": "unknown changes"
}
],
"status": "final",
"version": "4"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.ppc64le",
"product": {
"name": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.ppc64le",
"product_id": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.ppc64le",
"product_identification_helper": {
"purl": "pkg:rpm/suse/kernel-livepatch-6_4_0-150700_53_73-default@2-150700.2.1?arch=ppc64le\u0026upstream=kernel-livepatch-SLE15-SP7_Update_19-0:2-150700.2.1.src.rpm"
}
}
}
],
"category": "architecture",
"name": "ppc64le"
},
{
"branches": [
{
"category": "product_version",
"name": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.s390x",
"product": {
"name": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.s390x",
"product_id": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.s390x",
"product_identification_helper": {
"purl": "pkg:rpm/suse/kernel-livepatch-6_4_0-150700_53_73-default@2-150700.2.1?arch=s390x\u0026upstream=kernel-livepatch-SLE15-SP7_Update_19-0:2-150700.2.1.src.rpm"
}
}
}
],
"category": "architecture",
"name": "s390x"
},
{
"branches": [
{
"category": "product_version",
"name": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.x86_64",
"product": {
"name": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.x86_64",
"product_id": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.x86_64",
"product_identification_helper": {
"purl": "pkg:rpm/suse/kernel-livepatch-6_4_0-150700_53_73-default@2-150700.2.1?arch=x86_64\u0026upstream=kernel-livepatch-SLE15-SP7_Update_19-0:2-150700.2.1.src.rpm"
}
}
}
],
"category": "architecture",
"name": "x86_64"
},
{
"branches": [
{
"category": "product_name",
"name": "SUSE Linux Enterprise Live Patching 15 SP7",
"product": {
"name": "SUSE Linux Enterprise Live Patching 15 SP7",
"product_id": "SUSE Linux Enterprise Live Patching 15 SP7",
"product_identification_helper": {
"cpe": "cpe:/o:suse:sle-module-live-patching:15:sp7"
}
}
}
],
"category": "product_family",
"name": "SUSE Linux Enterprise"
}
],
"category": "vendor",
"name": "SUSE"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.ppc64le as component of SUSE Linux Enterprise Live Patching 15 SP7",
"product_id": "SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.ppc64le"
},
"product_reference": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.ppc64le",
"relates_to_product_reference": "SUSE Linux Enterprise Live Patching 15 SP7"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.s390x as component of SUSE Linux Enterprise Live Patching 15 SP7",
"product_id": "SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.s390x"
},
"product_reference": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.s390x",
"relates_to_product_reference": "SUSE Linux Enterprise Live Patching 15 SP7"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.x86_64 as component of SUSE Linux Enterprise Live Patching 15 SP7",
"product_id": "SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.x86_64"
},
"product_reference": "kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.x86_64",
"relates_to_product_reference": "SUSE Linux Enterprise Live Patching 15 SP7"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-64530",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2026-64530"
}
],
"notes": [
{
"category": "general",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: cls_api: Handle TC_ACT_CONSUMED in tcf_qevent_handle\n\ntcf_classify() can return TC_ACT_CONSUMED while the skb is held by the\ndefragmentation engine (e.g. act_ct on out-of-order fragments). When\nthat happens the skb is no longer owned by the caller and must not be\ntouched again.\n\ntcf_qevent_handle() did not handle TC_ACT_CONSUMED: it fell through the\nswitch and returned the skb to the caller as if classification had\npassed. The only qdisc that wires up qevents today is RED, via three call sites\n(qe_mark on RED_PROB_MARK/HARD_MARK, qe_early_drop on congestion_drop)\nred_enqueue() was continuing to operate on an skb it no longer owns in this\ncase -- enqueueing it, dropping it, or updating statistics. Resulting in a UAF.\n\n tc qdisc add dev eth0 root handle 1: red ... qevent early_drop block 10\n tc filter add block 10 ... action ct\n\n (with ct defrag enabled and traffic that produces out-of-order\n fragments, e.g. a fragmented UDP stream)\n\nHandle TC_ACT_CONSUMED in tcf_qevent_handle() the same way the ingress\nand egress fast paths do: treat it as stolen and return NULL without\ntouching the skb. Unlike the TC_ACT_STOLEN case, the skb must not be\ndropped/freed here, as it is no longer owned by us.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.ppc64le",
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.s390x",
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.x86_64"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2026-64530",
"url": "https://www.suse.com/security/cve/CVE-2026-64530"
},
{
"category": "external",
"summary": "SUSE Bug 1271866 for CVE-2026-64530",
"url": "https://bugzilla.suse.com/1271866"
},
{
"category": "external",
"summary": "SUSE Bug 1271867 for CVE-2026-64530",
"url": "https://bugzilla.suse.com/1271867"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.ppc64le",
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.s390x",
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.ppc64le",
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.s390x",
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"date": "2026-08-26T11:06:25Z",
"details": "important"
}
],
"title": "CVE-2026-64530"
},
{
"cve": "CVE-2026-64600",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2026-64600"
}
],
"notes": [
{
"category": "general",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: resample the data fork mapping after cycling ILOCK\n\nxfs_reflink_fill_{cow_hole,delalloc} are both presented with an inode,\na data fork mapping, and a cow fork mapping. Unfortunately, these two\nhelpers cycle the ILOCK to grab a transaction, which means that the\nmappings are stale as soon as we reacquire the ILOCK. Currently we\nrefresh the cow fork mapping by re-calling xfs_find_trim_cow_extent, but\nwe don\u0027t refresh the data fork mapping beforehand, which means that the\nxfs_bmap_trim_cow in that function queries the refcount btree about the\nwrong physical blocks and returns an inaccurate value in *shared.\n\nIf *shared is now false, the directio write proceeds with a stale data\nfork mapping. Fix this by querying the data fork mapping if the\nsequence counter changes across the ILOCK cycle.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.ppc64le",
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.s390x",
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.x86_64"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2026-64600",
"url": "https://www.suse.com/security/cve/CVE-2026-64600"
},
{
"category": "external",
"summary": "SUSE Bug 1271526 for CVE-2026-64600",
"url": "https://bugzilla.suse.com/1271526"
},
{
"category": "external",
"summary": "SUSE Bug 1271543 for CVE-2026-64600",
"url": "https://bugzilla.suse.com/1271543"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.ppc64le",
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.s390x",
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.ppc64le",
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.s390x",
"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_53_73-default-0:2-150700.2.1.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"date": "2026-08-26T11:06:25Z",
"details": "important"
}
],
"title": "CVE-2026-64600"
}
]
}
Loading…
Loading…
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.
Loading…
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.
Loading…
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.
Loading…