347 lines
17 KiB
JSON
347 lines
17 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-2022-49416",
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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": "2025-02-26T02:08:31.568Z",
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"datePublished": "2025-02-26T02:12:37.173Z",
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"dateUpdated": "2026-08-05T08:55:08.558Z"
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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": "2026-08-05T08:55:08.558Z"
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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: mac80211: fix use-after-free in chanctx code\n\nIn ieee80211_vif_use_reserved_context(), when we have an\nold context and the new context's replace_state is set to\nIEEE80211_CHANCTX_REPLACE_NONE, we free the old context\nin ieee80211_vif_use_reserved_reassign(). Therefore, we\ncannot check the old_ctx anymore, so we should set it to\nNULL after this point.\n\nHowever, since the new_ctx replace state is clearly not\nIEEE80211_CHANCTX_REPLACES_OTHER, we're not going to do\nanything else in this function and can just return to\navoid accessing the freed old_ctx."
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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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.8,
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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:A - The UAF is reached when mac80211 finalizes a channel-context reservation during CSA, which an adjacent attacker triggers by sending CSA beacons/action frames to an associated STA (or via IBSS/mesh CSA). WiFi frame processing is Adjacent, not Network.\nAC:L - The free-then-use is deterministic on the REPLACE_NONE reassign path when the vif was the sole user of old_ctx; the attacker controls CSA initiation and does not depend on an uncontrolled race or rare config.\nPR:N - The STA/mlme path processes CSA from the AP (or spoofed management frames) with no privileges on the victim host. No CAP_NET_ADMIN or local account is required for the over-the-air trigger.\nUI:N - Once the device is associated, CSA handling and chswitch_work run automatically with no further user action required to hit the vulnerable finalize path.\nS:U - This is a mac80211 kernel UAF affecting the local kernel authority only; it does not cross a VM, IOMMU, or other security boundary.\nC:H - Use-after-free of the ieee80211_chanctx object enables heap reuse/control of the freed object and therefore arbitrary read primitives under standard UAF exploitation.\nI:H - The same UAF enables heap spraying and corruption of the reused chanctx object, yielding write/control-flow hijack primitives consistent with kernel memory-corruption impact.\nA:H - Use-after-free of a channel context can cause kernel oops/panic (and is treated as High availability impact even when not fully exploited for code execution)."
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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/mac80211/chan.c"
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],
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"versions": [
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{
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"version": "5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f",
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"lessThan": "88cc8f963febe192d6ded9df7217f92f380b449a",
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"status": "affected",
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"versionType": "git"
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},
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"version": "5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f",
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"status": "affected",
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"status": "affected",
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"lessThan": "6118bbdf69f4718b02d26bbcf2e497eb66004331",
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"status": "affected",
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},
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{
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"version": "5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f",
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"lessThan": "b79110f2bf6022e60e590d2e094728a8eec3e79e",
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"status": "affected",
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{
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"lessThan": "82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2c",
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"status": "affected",
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{
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"version": "5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f",
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"lessThan": "4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6c",
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"status": "affected",
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},
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{
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"version": "5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f",
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"lessThan": "2965c4cdf7ad9ce0796fac5e57debb9519ea721e",
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"status": "affected",
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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/mac80211/chan.c"
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],
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"versions": [
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{
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"version": "3.17",
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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": "3.17",
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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": "4.9.318",
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"lessThanOrEqual": "4.9.*",
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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": "4.14.283",
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"lessThanOrEqual": "4.14.*",
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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": "4.19.247",
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"lessThanOrEqual": "4.19.*",
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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": "5.4.198",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.121",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.46",
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"lessThanOrEqual": "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": "5.17.14",
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"lessThanOrEqual": "5.17.*",
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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": "5.18.3",
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"lessThanOrEqual": "5.18.*",
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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": "5.19",
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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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"references": [
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{
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"url": "https://git.kernel.org/stable/c/88cc8f963febe192d6ded9df7217f92f380b449a"
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},
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{
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"url": "https://git.kernel.org/stable/c/4ba81e794f0fad6234f644c2da1ae14d5b95e1c4"
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},
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{
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"url": "https://git.kernel.org/stable/c/9f1e5cc85ad77e52f54049a94db0407445ae2a34"
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},
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{
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"url": "https://git.kernel.org/stable/c/265bec4779a38b65e86a25120370f200822dfa76"
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},
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{
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"url": "https://git.kernel.org/stable/c/6118bbdf69f4718b02d26bbcf2e497eb66004331"
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},
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{
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"url": "https://git.kernel.org/stable/c/b79110f2bf6022e60e590d2e094728a8eec3e79e"
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},
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{
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"url": "https://git.kernel.org/stable/c/82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2c"
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},
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{
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"url": "https://git.kernel.org/stable/c/4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6c"
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},
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{
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"url": "https://git.kernel.org/stable/c/2965c4cdf7ad9ce0796fac5e57debb9519ea721e"
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}
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],
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"title": "wifi: mac80211: fix use-after-free in chanctx code",
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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": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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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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"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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"confidentialityImpact": "HIGH"
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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-2022-49416",
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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": "2025-02-27T18:16:18.774528Z"
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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-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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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2025-02-27T18:22:33.196Z"
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}
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}
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]
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}
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} |