{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49023", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-22T01:27:53.649Z", "datePublished": "2024-10-21T20:06:29.901Z", "dateUpdated": "2026-08-05T08:53:30.326Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:53:30.326Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: fix buffer overflow in elem comparison\n\nFor vendor elements, the code here assumes that 5 octets\nare present without checking. Since the element itself is\nalready checked to fit, we only need to check the length." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - The bug is reached by injecting crafted 802.11 Beacon/Probe Response frames with Multiple BSSID elements containing short vendor IEs; exploitation requires adjacency on the Wi‑Fi RF segment, matching WiFi frame-injection guidance.\nAC:L - An attacker fully controls frame contents and can reliably include a vendor IE with length < 5 in both the transmitted BSS IEs and an MBSSID nontransmitted profile; success does not depend on races or unpredictable victim state beyond ordinary Wi‑Fi reception/scanning.\nPR:N - Frames are processed in the unauthenticated scan/MLME RX path before any association or credentials; no local account or capability is required.\nUI:N - cfg80211/mac80211 ingest these management frames during normal scanning and BSS updates without requiring a deliberate user action beyond having Wi‑Fi operating.\nS:U - Impact remains within the local kernel’s BSS/IE handling authority; there is no VM, IOMMU, or other security-authority boundary crossing.\nC:L - The defect is a strictly bounded out-of-bounds read of at most 5 bytes used only for vendor-IE matching (small bounded OOB read), not an arbitrary read primitive, so confidentiality impact is Low rather than High.\nI:N - The buggy access is a read-only memcmp; subsequent memcpy lengths still follow validated IE length fields, so this CVE does not provide a write or control-flow integrity primitive.\nA:H - Reading past the end of a kmemdup/slab IE buffer is a memory-safety violation that can fault or oops when the short vendor IE sits at the allocation boundary, so availability impact is High." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/wireless/scan.c" ], "versions": [ { "version": "0b8fb8235be8be99a197e8d948fc0a2df8dc261a", "lessThan": "f5c2ec288a865dbe3706b09bed12302e9f6d696b", "status": "affected", "versionType": "git" }, { "version": "0b8fb8235be8be99a197e8d948fc0a2df8dc261a", "lessThan": "9e6b79a3cd17620d467311b30d56f2648f6880aa", "status": "affected", "versionType": "git" }, { "version": "0b8fb8235be8be99a197e8d948fc0a2df8dc261a", "lessThan": "88a6fe3707888bd1893e9741157a7035c4159ab6", "status": "affected", "versionType": "git" }, { "version": "0b8fb8235be8be99a197e8d948fc0a2df8dc261a", "lessThan": "391cb872553627bdcf236c03ee7d5adb275e37e1", "status": "affected", "versionType": "git" }, { "version": "0b8fb8235be8be99a197e8d948fc0a2df8dc261a", "lessThan": "9f16b5c82a025cd4c864737409234ddc44fb166a", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/wireless/scan.c" ], "versions": [ { "version": "5.1", "status": "affected" }, { "version": "0", "lessThan": "5.1", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.226", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.158", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.82", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.12", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1", "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": "5.1", "versionEndExcluding": "5.4.226" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.10.158" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.15.82" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.0.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/f5c2ec288a865dbe3706b09bed12302e9f6d696b" }, { "url": "https://git.kernel.org/stable/c/9e6b79a3cd17620d467311b30d56f2648f6880aa" }, { "url": "https://git.kernel.org/stable/c/88a6fe3707888bd1893e9741157a7035c4159ab6" }, { "url": "https://git.kernel.org/stable/c/391cb872553627bdcf236c03ee7d5adb275e37e1" }, { "url": "https://git.kernel.org/stable/c/9f16b5c82a025cd4c864737409234ddc44fb166a" } ], "title": "wifi: cfg80211: fix buffer overflow in elem comparison", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2022-49023", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-10-22T13:12:18.800355Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:18:36.843Z" } } ] } }