SUSE-SU-2026:20681-1
Vulnerability from csaf_suse - Published: 2026-03-05 11:13 - Updated: 2026-09-16 19:34Summary
Security update for the Linux Kernel RT (Live Patch 5 for SUSE Linux Enterprise Micro 6.0)
Severity
Important
Notes
Title of the patch: Security update for the Linux Kernel RT (Live Patch 5 for SUSE Linux Enterprise Micro 6.0)
Description of the patch:
This update for the SUSE Linux Enterprise kernel 6.4.0-25.1 fixes one security issue
The following security issue was fixed:
- CVE-2025-38129: page_pool: fix use-after-free in page_pool_recycle_in_ring (bsc#1258139).
Patchnames: SUSE-SLE-Micro-6.1-kernel-284
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
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: SUSE Linux Micro 6.1:kernel-livepatch-6_4_0-25-rt-15-1.1.x86_64 | — |
Vendor Fix
|
Threats
Impact
important
References
9 references
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"text": "Copyright 2024 SUSE LLC. All rights reserved.",
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"text": "\nThis update for the SUSE Linux Enterprise kernel 6.4.0-25.1 fixes one security issue\n\nThe following security issue was fixed:\n\n- CVE-2025-38129: page_pool: fix use-after-free in page_pool_recycle_in_ring (bsc#1258139).\n",
"title": "Description of the patch"
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"text": "SUSE-SLE-Micro-6.1-kernel-284",
"title": "Patchnames"
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"text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
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"url": "https://www.suse.com/support/security/rating/"
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"url": "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_20681-1.json"
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"url": "https://www.suse.com/support/update/announcement/2026/suse-su-202620681-1/"
},
{
"category": "self",
"summary": "E-Mail link for SUSE-SU-2026:20681-1",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024737.html"
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{
"category": "self",
"summary": "SUSE Bug 1258139",
"url": "https://bugzilla.suse.com/1258139"
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{
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"summary": "SUSE CVE CVE-2025-38129 page",
"url": "https://www.suse.com/security/cve/CVE-2025-38129/"
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"title": "Security update for the Linux Kernel RT (Live Patch 5 for SUSE Linux Enterprise Micro 6.0)",
"tracking": {
"current_release_date": "2026-09-16T19:34:19Z",
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"date": "2026-03-05T11:13:05Z",
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"revision_history": [
{
"date": "2026-03-05T11:13:05Z",
"number": "1",
"summary": "Current version"
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{
"date": "2026-09-16T18:43:38Z",
"number": "2",
"summary": "unknown changes"
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{
"date": "2026-09-16T19:34:19Z",
"number": "3",
"summary": "unknown changes"
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"status": "final",
"version": "3"
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"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "kernel-livepatch-6_4_0-25-rt-15-1.1.x86_64",
"product": {
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"product_id": "kernel-livepatch-6_4_0-25-rt-15-1.1.x86_64",
"product_identification_helper": {
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],
"category": "architecture",
"name": "x86_64"
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{
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"name": "SUSE Linux Micro 6.1",
"product": {
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"product_id": "SUSE Linux Micro 6.1",
"product_identification_helper": {
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"category": "product_family",
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"category": "vendor",
"name": "SUSE"
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"relationships": [
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"full_product_name": {
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"product_id": "SUSE Linux Micro 6.1:kernel-livepatch-6_4_0-25-rt-15-1.1.x86_64"
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"relates_to_product_reference": "SUSE Linux Micro 6.1"
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"vulnerabilities": [
{
"cve": "CVE-2025-38129",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2025-38129"
}
],
"notes": [
{
"category": "general",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\npage_pool: Fix use-after-free in page_pool_recycle_in_ring\n\nsyzbot reported a uaf in page_pool_recycle_in_ring:\n\nBUG: KASAN: slab-use-after-free in lock_release+0x151/0xa30 kernel/locking/lockdep.c:5862\nRead of size 8 at addr ffff8880286045a0 by task syz.0.284/6943\n\nCPU: 0 UID: 0 PID: 6943 Comm: syz.0.284 Not tainted 6.13.0-rc3-syzkaller-gdfa94ce54f41 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:378 [inline]\n print_report+0x169/0x550 mm/kasan/report.c:489\n kasan_report+0x143/0x180 mm/kasan/report.c:602\n lock_release+0x151/0xa30 kernel/locking/lockdep.c:5862\n __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:165 [inline]\n _raw_spin_unlock_bh+0x1b/0x40 kernel/locking/spinlock.c:210\n spin_unlock_bh include/linux/spinlock.h:396 [inline]\n ptr_ring_produce_bh include/linux/ptr_ring.h:164 [inline]\n page_pool_recycle_in_ring net/core/page_pool.c:707 [inline]\n page_pool_put_unrefed_netmem+0x748/0xb00 net/core/page_pool.c:826\n page_pool_put_netmem include/net/page_pool/helpers.h:323 [inline]\n page_pool_put_full_netmem include/net/page_pool/helpers.h:353 [inline]\n napi_pp_put_page+0x149/0x2b0 net/core/skbuff.c:1036\n skb_pp_recycle net/core/skbuff.c:1047 [inline]\n skb_free_head net/core/skbuff.c:1094 [inline]\n skb_release_data+0x6c4/0x8a0 net/core/skbuff.c:1125\n skb_release_all net/core/skbuff.c:1190 [inline]\n __kfree_skb net/core/skbuff.c:1204 [inline]\n sk_skb_reason_drop+0x1c9/0x380 net/core/skbuff.c:1242\n kfree_skb_reason include/linux/skbuff.h:1263 [inline]\n __skb_queue_purge_reason include/linux/skbuff.h:3343 [inline]\n\nroot cause is:\n\npage_pool_recycle_in_ring\n ptr_ring_produce\n spin_lock(\u0026r-\u003eproducer_lock);\n WRITE_ONCE(r-\u003equeue[r-\u003eproducer++], ptr)\n //recycle last page to pool\n\t\t\t\tpage_pool_release\n\t\t\t\t page_pool_scrub\n\t\t\t\t page_pool_empty_ring\n\t\t\t\t ptr_ring_consume\n\t\t\t\t page_pool_return_page //release all page\n\t\t\t\t __page_pool_destroy\n\t\t\t\t free_percpu(pool-\u003erecycle_stats);\n\t\t\t\t free(pool) //free\n\n spin_unlock(\u0026r-\u003eproducer_lock); //pool-\u003ering uaf read\n recycle_stat_inc(pool, ring);\n\npage_pool can be free while page pool recycle the last page in ring.\nAdd producer-lock barrier to page_pool_release to prevent the page\npool from being free before all pages have been recycled.\n\nrecycle_stat_inc() is empty when CONFIG_PAGE_POOL_STATS is not\nenabled, which will trigger Wempty-body build warning. Add definition\nfor pool stat macro to fix warning.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
"SUSE Linux Micro 6.1:kernel-livepatch-6_4_0-25-rt-15-1.1.x86_64"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2025-38129",
"url": "https://www.suse.com/security/cve/CVE-2025-38129"
},
{
"category": "external",
"summary": "SUSE Bug 1245723 for CVE-2025-38129",
"url": "https://bugzilla.suse.com/1245723"
},
{
"category": "external",
"summary": "SUSE Bug 1258139 for CVE-2025-38129",
"url": "https://bugzilla.suse.com/1258139"
}
],
"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 6.1:kernel-livepatch-6_4_0-25-rt-15-1.1.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 Micro 6.1:kernel-livepatch-6_4_0-25-rt-15-1.1.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"date": "2026-03-05T11:13:05Z",
"details": "important"
}
],
"title": "CVE-2025-38129"
}
]
}
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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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