268 lines
14 KiB
JSON
268 lines
14 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-2026-31548",
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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": "2026-03-09T15:48:24.114Z",
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"datePublished": "2026-04-24T14:33:16.021Z",
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"dateUpdated": "2026-10-19T18:55:58.636Z"
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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": "2026-08-05T12:23:25.445Z"
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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\nwifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down\n\nWhen the nl80211 socket that originated a PMSR request is\nclosed, cfg80211_release_pmsr() sets the request's nl_portid\nto zero and schedules pmsr_free_wk to process the abort\nasynchronously. If the interface is concurrently torn down\nbefore that work runs, cfg80211_pmsr_wdev_down() calls\ncfg80211_pmsr_process_abort() directly. However, the already-\nscheduled pmsr_free_wk work item remains pending and may run\nafter the interface has been removed from the driver. This\ncould cause the driver's abort_pmsr callback to operate on a\ntorn-down interface, leading to undefined behavior and\npotential crashes.\n\nCancel pmsr_free_wk synchronously in cfg80211_pmsr_wdev_down()\nbefore calling cfg80211_pmsr_process_abort(). This ensures any\npending or in-progress work is drained before interface teardown\nproceeds, preventing the work from invoking the driver abort\ncallback after the interface is gone."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerable path is reached through local nl80211 generic-netlink operations for `NL80211_CMD_PEER_MEASUREMENT_START` and netlink socket teardown/device teardown, not by remote WiFi frames alone.\nAC:L - The attacker can create the PMSR request, close the originating netlink socket to schedule `pmsr_free_wk`, and trigger interface teardown concurrently; this is an attacker-controlled race.\nPR:L - The start path is gated by `GENL_UNS_ADMIN_PERM`, requiring `CAP_NET_ADMIN` in the relevant network namespace. Under the kernel guidance, namespace-reachable `CAP_NET_ADMIN` is Low privileges rather than High.\nUI:N - No victim action is required once the attacker has local access and the needed netlink privilege; the attacker controls the request, socket close, and teardown sequence.\nS:U - The impact remains within the kernel/driver security authority and does not cross a VM, IOMMU, or separate sandbox boundary.\nC:H - The stale pending work can operate on a torn-down wireless interface and driver state, a use-after-teardown/use-after-free style condition. In the highest defensible case, freed or invalid kernel objects may be reused to gain memory disclosure primitives.\nI:H - The same stale work and driver callback path can dereference and act on invalid or reallocated kernel/driver objects. Treating this as exploitable memory corruption makes arbitrary write or control-flow impact defensible.\nA:H - The commit explicitly describes undefined behavior and potential crashes from invoking the abort callback after interface teardown. A kernel crash or oops is High availability impact."
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}
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]
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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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"net/wireless/pmsr.c"
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],
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"versions": [
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{
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"version": "9bb7e0f24e7e7d00daa1219b14539e2e602649b2",
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"lessThan": "28d3551f8d8cb3aec7497894d94150fe84d20e5e",
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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": "9bb7e0f24e7e7d00daa1219b14539e2e602649b2",
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"lessThan": "37e776e2e0a523731e2470dce6d563f0e8632a40",
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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": "9bb7e0f24e7e7d00daa1219b14539e2e602649b2",
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"lessThan": "d32c07ef1880fe20cf4ab223dbfedc9c0b2816aa",
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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": "9bb7e0f24e7e7d00daa1219b14539e2e602649b2",
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"lessThan": "a1b7a843f12a0c3e9d3a2ca607ce451916ef42cf",
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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": "9bb7e0f24e7e7d00daa1219b14539e2e602649b2",
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"lessThan": "72b7ea786b8e570ae11149e9089859a4a8634a13",
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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": "9bb7e0f24e7e7d00daa1219b14539e2e602649b2",
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"lessThan": "6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09",
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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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"net/wireless/pmsr.c"
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],
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"versions": [
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{
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"version": "5.0",
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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": "5.0",
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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": "6.1.167",
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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": "6.6.130",
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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": "6.12.78",
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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": "6.18.20",
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"lessThanOrEqual": "6.18.*",
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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": "6.19.10",
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"lessThanOrEqual": "6.19.*",
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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": "7.0",
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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": "5.0",
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"versionEndExcluding": "6.1.167"
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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": "5.0",
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"versionEndExcluding": "6.6.130"
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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": "5.0",
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"versionEndExcluding": "6.12.78"
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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": "5.0",
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"versionEndExcluding": "6.18.20"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.0",
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"versionEndExcluding": "6.19.10"
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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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}
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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/28d3551f8d8cb3aec7497894d94150fe84d20e5e"
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},
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{
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"url": "https://git.kernel.org/stable/c/37e776e2e0a523731e2470dce6d563f0e8632a40"
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},
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{
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"url": "https://git.kernel.org/stable/c/d32c07ef1880fe20cf4ab223dbfedc9c0b2816aa"
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},
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{
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"url": "https://git.kernel.org/stable/c/a1b7a843f12a0c3e9d3a2ca607ce451916ef42cf"
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},
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{
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"url": "https://git.kernel.org/stable/c/72b7ea786b8e570ae11149e9089859a4a8634a13"
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},
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{
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"url": "https://git.kernel.org/stable/c/6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09"
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}
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],
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"title": "wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down",
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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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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-31548",
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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": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:10:48.891822Z"
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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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"cweId": "CWE-362",
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"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"
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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": "2026-10-19T18:55:58.636Z"
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}
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}
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]
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}
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} |