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vuln-cve/data/2025/39xxx/CVE-2025-39843.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2025-39843",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-04-16T07:20:57.141Z",
"datePublished": "2025-09-19T15:26:17.758Z",
"dateUpdated": "2026-05-12T12:07:31.214Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T21:37:31.134Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: slub: avoid wake up kswapd in set_track_prepare\n\nset_track_prepare() can incur lock recursion.\nThe issue is that it is called from hrtimer_start_range_ns\nholding the per_cpu(hrtimer_bases)[n].lock, but when enabled\nCONFIG_DEBUG_OBJECTS_TIMERS, may wake up kswapd in set_track_prepare,\nand try to hold the per_cpu(hrtimer_bases)[n].lock.\n\nAvoid deadlock caused by implicitly waking up kswapd by passing in\nallocation flags, which do not contain __GFP_KSWAPD_RECLAIM in the\ndebug_objects_fill_pool() case. Inside stack depot they are processed by\ngfp_nested_mask().\nSince ___slab_alloc() has preemption disabled, we mask out\n__GFP_DIRECT_RECLAIM from the flags there.\n\nThe oops looks something like:\n\nBUG: spinlock recursion on CPU#3, swapper/3/0\n lock: 0xffffff8a4bf29c80, .magic: dead4ead, .owner: swapper/3/0, .owner_cpu: 3\nHardware name: Qualcomm Technologies, Inc. Popsicle based on SM8850 (DT)\nCall trace:\nspin_bug+0x0\n_raw_spin_lock_irqsave+0x80\nhrtimer_try_to_cancel+0x94\ntask_contending+0x10c\nenqueue_dl_entity+0x2a4\ndl_server_start+0x74\nenqueue_task_fair+0x568\nenqueue_task+0xac\ndo_activate_task+0x14c\nttwu_do_activate+0xcc\ntry_to_wake_up+0x6c8\ndefault_wake_function+0x20\nautoremove_wake_function+0x1c\n__wake_up+0xac\nwakeup_kswapd+0x19c\nwake_all_kswapds+0x78\n__alloc_pages_slowpath+0x1ac\n__alloc_pages_noprof+0x298\nstack_depot_save_flags+0x6b0\nstack_depot_save+0x14\nset_track_prepare+0x5c\n___slab_alloc+0xccc\n__kmalloc_cache_noprof+0x470\n__set_page_owner+0x2bc\npost_alloc_hook[jt]+0x1b8\nprep_new_page+0x28\nget_page_from_freelist+0x1edc\n__alloc_pages_noprof+0x13c\nalloc_slab_page+0x244\nallocate_slab+0x7c\n___slab_alloc+0x8e8\nkmem_cache_alloc_noprof+0x450\ndebug_objects_fill_pool+0x22c\ndebug_object_activate+0x40\nenqueue_hrtimer[jt]+0xdc\nhrtimer_start_range_ns+0x5f8\n..."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"mm/slub.c"
],
"versions": [
{
"version": "5cf909c553e9efed573811de4b3f5172898d5515",
"lessThan": "994b03b9605d36d814c611385fbf90ca6db20aa8",
"status": "affected",
"versionType": "git"
},
{
"version": "5cf909c553e9efed573811de4b3f5172898d5515",
"lessThan": "522ffe298627cfe72539d72167c2e20e72b5e856",
"status": "affected",
"versionType": "git"
},
{
"version": "5cf909c553e9efed573811de4b3f5172898d5515",
"lessThan": "243b705a90ed8449f561a271cf251fd2e939f3db",
"status": "affected",
"versionType": "git"
},
{
"version": "5cf909c553e9efed573811de4b3f5172898d5515",
"lessThan": "eb3240ffd243bfb8b1e9dc568d484ecf9fd660ab",
"status": "affected",
"versionType": "git"
},
{
"version": "5cf909c553e9efed573811de4b3f5172898d5515",
"lessThan": "850470a8413a8a78e772c4f6bd9fe81ec6bd5b0f",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"mm/slub.c"
],
"versions": [
{
"version": "5.19",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.19",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.151",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.105",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.46",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.16.6",
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.17",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.19",
"versionEndExcluding": "6.1.151"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.19",
"versionEndExcluding": "6.6.105"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.19",
"versionEndExcluding": "6.12.46"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.19",
"versionEndExcluding": "6.16.6"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.19",
"versionEndExcluding": "6.17"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/994b03b9605d36d814c611385fbf90ca6db20aa8"
},
{
"url": "https://git.kernel.org/stable/c/522ffe298627cfe72539d72167c2e20e72b5e856"
},
{
"url": "https://git.kernel.org/stable/c/243b705a90ed8449f561a271cf251fd2e939f3db"
},
{
"url": "https://git.kernel.org/stable/c/eb3240ffd243bfb8b1e9dc568d484ecf9fd660ab"
},
{
"url": "https://git.kernel.org/stable/c/850470a8413a8a78e772c4f6bd9fe81ec6bd5b0f"
}
],
"title": "mm: slub: avoid wake up kswapd in set_track_prepare",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"title": "CVE Program Container",
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
}
],
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2025-11-03T17:43:58.958Z"
}
},
{
"x_adpType": "supplier",
"providerMetadata": {
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP",
"dateUpdated": "2026-05-12T12:07:31.214Z"
},
"affected": [
{
"vendor": "Siemens",
"product": "SIMATIC CN 4100",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V5.0",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
}
],
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"
}
]
}
]
}
}