258 lines
13 KiB
JSON
258 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-2022-49129",
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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": "2025-02-26T01:49:39.266Z",
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"datePublished": "2025-02-26T01:55:05.624Z",
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"dateUpdated": "2026-08-12T23:57:54.463Z"
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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": "2026-08-12T23:57:54.463Z"
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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\nmt76: mt7921: fix crash when startup fails.\n\nIf the nic fails to start, it is possible that the\nreset_work has already been scheduled. Ensure the\nwork item is canceled so we do not have use-after-free\ncrash in case cleanup is called before the work item\nis executed.\n\nThis fixes crash on my x86_64 apu2 when mt7921k radio\nfails to work. Radio still fails, but OS does not\ncrash."
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}
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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 UAF is in the mt7921 PCIe/SDIO WiFi driver’s stop/cleanup path when a pending reset_work races with teardown; exploitation requires local ability to drive the interface/driver lifecycle, not remote packet parsing alone.\nAC:L - Once MCU timeouts or failure paths have scheduled reset_work, a local attacker who can bring the interface down or otherwise trigger stop/cleanup controls the other side of the race and can retry until it wins.\nPR:L - Triggering stop only needs privileges to manage the wireless interface (e.g., NetworkManager/polkit or Android Wi‑Fi controls), which are commonly available to ordinary local users and do not require full root.\nUI:N - No separate victim action is required; the attacker (or automated interface management they influence) can initiate the stop/cleanup that races with reset_work.\nS:U - Impact is confined to the local kernel/host authority; this is a standard driver UAF without a VM, IOMMU, or other security-boundary escape.\nC:H - Use-after-free of driver/device state can be leveraged for arbitrary kernel memory disclosure via reclaim and controlled reuse of the freed object.\nI:H - The same UAF enables heap reuse and control-flow hijacking primitives, so integrity impact includes arbitrary kernel write / code execution potential.\nA:H - The bug causes a kernel oops/crash when reset_work runs against already-cleaned-up state, fully disrupting system availability."
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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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"drivers/net/wireless/mediatek/mt76/mt7921/main.c"
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],
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"versions": [
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{
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"lessThan": "38fbe806645090c07aa97171f20fc62c3d7d3a98",
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},
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{
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"version": "5.12.16",
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"lessThan": "5.13",
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"status": "affected",
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"versionType": "semver"
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},
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"drivers/net/wireless/mediatek/mt76/mt7921/main.c"
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],
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},
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{
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"version": "5.15.34",
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"lessThanOrEqual": "5.15.*",
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},
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},
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"status": "unaffected",
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},
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{
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"version": "5.18",
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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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"references": [
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{
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"url": "https://git.kernel.org/stable/c/38fbe806645090c07aa97171f20fc62c3d7d3a98"
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},
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{
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"url": "https://git.kernel.org/stable/c/c1a5e6002ec441a3b9fb4d048b4b49ae93409a46"
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{
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"url": "https://git.kernel.org/stable/c/ac1260b661c2ef0d0a56680cdb5672b931b7be8f"
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{
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}
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],
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"title": "mt76: mt7921: fix crash when startup fails.",
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"scope": "UNCHANGED",
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"baseScore": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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"integrityImpact": "HIGH",
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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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}
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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-2022-49129",
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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": "2025-02-27T18:17:14.426944Z"
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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-416",
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"description": "CWE-416 Use After Free"
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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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"shortName": "CISA-ADP",
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"dateUpdated": "2025-02-27T18:22:34.818Z"
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}
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}
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]
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}
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} |