SUSE-SU-2026:22980-1
Vulnerability from csaf_suse - Published: 2026-07-30 04:16 - Updated: 2026-09-16 20:09Summary
Security update for the Linux Kernel (Live Patch 14 for SUSE Linux Enterprise 16)
Severity
Important
Notes
Title of the patch: Security update for the Linux Kernel (Live Patch 14 for SUSE Linux Enterprise 16)
Description of the patch:
This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.35.1 fixes various security issues:
The following security issues were fixed:
- CVE-2026-53359: KVM: x86: Fix shadow paging use-after-free due to unexpected role (bsc#1270060).
- CVE-2026-53366: ipv4: account for fraggap on the paged allocation path (bsc#1271370).
Patchnames: SUSE-SL-Micro-6.2-1391
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
8.8 (High)
Affected products
Recommended
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.x86_64 | — |
Vendor Fix
|
Threats
Impact
important
8.5 (High)
Affected products
Recommended
3 products, the same list as for
CVE-2026-53359
Threats
Impact
important
References
16 references
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"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-August/028084.html"
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{
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"url": "https://bugzilla.suse.com/1271370"
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"url": "https://www.suse.com/security/cve/CVE-2026-53359/"
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{
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"url": "https://www.suse.com/security/cve/CVE-2026-53366/"
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"title": "Security update for the Linux Kernel (Live Patch 14 for SUSE Linux Enterprise 16)",
"tracking": {
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"revision_history": [
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"name": "kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.ppc64le",
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"name": "SUSE"
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"product_id": "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.ppc64le"
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"vulnerabilities": [
{
"cve": "CVE-2026-53359",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2026-53359"
}
],
"notes": [
{
"category": "general",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86: Fix shadow paging use-after-free due to unexpected role\n\nCommit 0cb2af2ea66ad (\"KVM: x86: Fix shadow paging use-after-free due\nto unexpected GFN\") fixed a shadow paging mismatch between stored and\ncomputed GFNs; the bug could be triggered by changing a PDE mapping from\noutside the guest, and then deleting a memslot. The rmap_remove()\ncall would miss entries created after the PDE change because the GFN\nof the leaf SPTE does not match the GFN of the struct kvm_mmu_page.\n\nA similar hole however remains if the modified PDE points to a non-leaf\npage. In this case the gfn can be made to match, but the role does not\nmatch: the original large 2MB page creates a kvm_mmu_page with direct=1,\nwhile the new 4KB needs a kvm_mmu_page with direct=0. However,\nkvm_mmu_get_child_sp() does not compare the role, and therefore reuses\nthe page.\n\nThe next step is installing a leaf (4KB) SPTE on the new path which\nrecords an rmap entry under the gfn resolved by the walk. But when\nthat child is zapped its parent kvm_mmu_page has direct=1 and\nkvm_mmu_page_get_gfn() computes the gfn for the 4KB page as\nsp-\u003egfn + index instead of using sp-\u003eshadowed_translation[] (or sp-\u003egfns[]\nin older kernels). It therefore fails to remove the recorded entry.\n\nWhen the memslot is dropped the shadow page is freed but the rmap\nentry survives, as in the scenario that was already fixed. Code that\nlater walks that gfn (dirty logging, MMU notifier invalidation, and\nso on) dereferences an sptep that lies in the freed page, causing the\nuse-after-free.",
"title": "CVE description"
}
],
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"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.s390x",
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.x86_64"
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"summary": "CVE-2026-53359",
"url": "https://www.suse.com/security/cve/CVE-2026-53359"
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{
"category": "external",
"summary": "SUSE Bug 1270059 for CVE-2026-53359",
"url": "https://bugzilla.suse.com/1270059"
},
{
"category": "external",
"summary": "SUSE Bug 1270060 for CVE-2026-53359",
"url": "https://bugzilla.suse.com/1270060"
},
{
"category": "external",
"summary": "SUSE Bug 1271478 for CVE-2026-53359",
"url": "https://bugzilla.suse.com/1271478"
},
{
"category": "external",
"summary": "SUSE Bug 1273231 for CVE-2026-53359",
"url": "https://bugzilla.suse.com/1273231"
}
],
"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 Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.ppc64le",
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.s390x",
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.x86_64"
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"scores": [
{
"cvss_v3": {
"baseScore": 8.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.ppc64le",
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.s390x",
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"date": "2026-07-30T04:16:23Z",
"details": "important"
}
],
"title": "CVE-2026-53359"
},
{
"cve": "CVE-2026-53366",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2026-53366"
}
],
"notes": [
{
"category": "general",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: account for fraggap on the paged allocation path\n\nIn __ip_append_data(), when the paged-allocation branch is taken,\nalloclen and pagedlen are computed as\n\n\talloclen = fragheaderlen + transhdrlen;\n\tpagedlen = datalen - transhdrlen;\n\ndatalen already includes fraggap, but the fraggap bytes carried over\nfrom the previous skb are copied into the new skb\u0027s linear area at\noffset transhdrlen by the subsequent skb_copy_and_csum_bits(). The\nlinear area is therefore undersized by fraggap bytes while pagedlen is\noverstated by the same amount.\n\nThe non-paged branch sets alloclen to fraglen, which already accounts\nfor fraggap because datalen does. Bring the paged branch in line by\nadding fraggap to alloclen and subtracting it from pagedlen.\n\nAfter this adjustment, copy no longer collapses to -fraggap on the\npaged path, so remove the stale comment describing that old arithmetic.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.ppc64le",
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.s390x",
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.x86_64"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2026-53366",
"url": "https://www.suse.com/security/cve/CVE-2026-53366"
},
{
"category": "external",
"summary": "SUSE Bug 1271366 for CVE-2026-53366",
"url": "https://bugzilla.suse.com/1271366"
},
{
"category": "external",
"summary": "SUSE Bug 1271370 for CVE-2026-53366",
"url": "https://bugzilla.suse.com/1271370"
}
],
"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 Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.ppc64le",
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.s390x",
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.ppc64le",
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.s390x",
"SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_35-default-3-160000.1.1.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"date": "2026-07-30T04:16:23Z",
"details": "important"
}
],
"title": "CVE-2026-53366"
}
]
}
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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.
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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.
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