246 lines
13 KiB
JSON
246 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-39886",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-04-16T07:20:57.145Z",
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"datePublished": "2025-09-23T06:00:53.120Z",
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"dateUpdated": "2026-10-30T12:22:35.281Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:22:35.281Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Tell memcg to use allow_spinning=false path in bpf_timer_init()\n\nCurrently, calling bpf_map_kmalloc_node() from __bpf_async_init() can\ncause various locking issues; see the following stack trace (edited for\nstyle) as one example:\n\n...\n [10.011566] do_raw_spin_lock.cold\n [10.011570] try_to_wake_up (5) double-acquiring the same\n [10.011575] kick_pool rq_lock, causing a hardlockup\n [10.011579] __queue_work\n [10.011582] queue_work_on\n [10.011585] kernfs_notify\n [10.011589] cgroup_file_notify\n [10.011593] try_charge_memcg (4) memcg accounting raises an\n [10.011597] obj_cgroup_charge_pages MEMCG_MAX event\n [10.011599] obj_cgroup_charge_account\n [10.011600] __memcg_slab_post_alloc_hook\n [10.011603] __kmalloc_node_noprof\n...\n [10.011611] bpf_map_kmalloc_node\n [10.011612] __bpf_async_init\n [10.011615] bpf_timer_init (3) BPF calls bpf_timer_init()\n [10.011617] bpf_prog_xxxxxxxxxxxxxxxx_fcg_runnable\n [10.011619] bpf__sched_ext_ops_runnable\n [10.011620] enqueue_task_scx (2) BPF runs with rq_lock held\n [10.011622] enqueue_task\n [10.011626] ttwu_do_activate\n [10.011629] sched_ttwu_pending (1) grabs rq_lock\n...\n\nThe above was reproduced on bpf-next (b338cf849ec8) by modifying\n./tools/sched_ext/scx_flatcg.bpf.c to call bpf_timer_init() during\nops.runnable(), and hacking the memcg accounting code a bit to make\na bpf_timer_init() call more likely to raise an MEMCG_MAX event.\n\nWe have also run into other similar variants (both internally and on\nbpf-next), including double-acquiring cgroup_file_kn_lock, the same\nworker_pool::lock, etc.\n\nAs suggested by Shakeel, fix this by using __GFP_HIGH instead of\nGFP_ATOMIC in __bpf_async_init(), so that e.g. if try_charge_memcg()\nraises an MEMCG_MAX event, we call __memcg_memory_event() with\n@allow_spinning=false and avoid calling cgroup_file_notify() there.\n\nDepends on mm patch\n\"memcg: skip cgroup_file_notify if spinning is not allowed\":\nhttps://lore.kernel.org/bpf/20250905201606.66198-1-shakeel.butt@linux.dev/\n\nv0 approach s/bpf_map_kmalloc_node/bpf_mem_alloc/\nhttps://lore.kernel.org/bpf/20250905061919.439648-1-yepeilin@google.com/\nv1 approach:\nhttps://lore.kernel.org/bpf/20250905234547.862249-1-yepeilin@google.com/"
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"kernel/bpf/helpers.c"
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],
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"versions": [
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{
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"version": "b00628b1c7d595ae5b544e059c27b1f5828314b4",
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"lessThan": "3e42431a705be8417ac5b696daa1dd43b3d27169",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b00628b1c7d595ae5b544e059c27b1f5828314b4",
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"lessThan": "449682e76f32601f211816d3e2100bed87e67a4c",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b00628b1c7d595ae5b544e059c27b1f5828314b4",
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"lessThan": "cd1fd26bb13473c1734e3026b2b97025a0a4087b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b00628b1c7d595ae5b544e059c27b1f5828314b4",
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"lessThan": "ac70cd446f83ccb25532b343919ab86eacdcd06a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b00628b1c7d595ae5b544e059c27b1f5828314b4",
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"lessThan": "6d78b4473cdb08b74662355a9e8510bde09c511e",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"kernel/bpf/helpers.c"
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],
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"versions": [
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{
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"version": "5.15",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.15",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.191",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.107",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.48",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.16.8",
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"lessThanOrEqual": "6.16.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.17",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "6.1.191"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "6.6.107"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "6.12.48"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "6.16.8"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "6.17"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/3e42431a705be8417ac5b696daa1dd43b3d27169"
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},
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{
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"url": "https://git.kernel.org/stable/c/449682e76f32601f211816d3e2100bed87e67a4c"
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},
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{
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"url": "https://git.kernel.org/stable/c/cd1fd26bb13473c1734e3026b2b97025a0a4087b"
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},
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{
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"url": "https://git.kernel.org/stable/c/ac70cd446f83ccb25532b343919ab86eacdcd06a"
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},
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{
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"url": "https://git.kernel.org/stable/c/6d78b4473cdb08b74662355a9e8510bde09c511e"
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}
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],
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"title": "bpf: Tell memcg to use allow_spinning=false path in bpf_timer_init()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 5.5,
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"attackVector": "LOCAL",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "NONE"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2025-39886",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-01-14T19:26:19.815693Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"description": "CWE-noinfo Not enough information"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-01-14T19:33:12.924Z"
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}
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}
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]
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}
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} |