CVE-2022-49405

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-49405", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.566Z", "datePublished": "2025-02-26T02:12:30.617Z", "dateUpdated": "2026-08-05T08:55:02.085Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:55:02.085Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: r8188eu: prevent ->Ssid overflow in rtw_wx_set_scan()\n\nThis code has a check to prevent read overflow but it needs another\ncheck to prevent writing beyond the end of the ->Ssid[] array."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The overflow is reached only via local wireless-extensions ioctls (SIOCSIWSCAN or SIOCSIWPRIV\u2192rtw_wx_set_priv) that deliver an attacker-crafted CSCAN buffer into rtw_wx_set_scan(); no received WiFi frame or remote peer path invokes this parser.\nAC:L - The attacker fully controls the CSCAN section type, sec_len, and payload in a single ioctl, and the missing Ssid[32] bound check makes the stack overflow deterministic with no race or attacker-uncontrollable condition.\nPR:L - wext_permission_check() requires capable(CAP_NET_ADMIN), a capability routinely held by non-root WiFi management daemons (wpa_supplicant/NetworkManager) on the phones and embedded devices this USB RTL8188EU driver targets, and this CNA consistently scores CAP_NET_ADMIN-gated WEXT bugs as PR:L.\nUI:N - The attacker issues the ioctl directly against an already-registered r8188eu interface; no victim action such as mounting media or opening a crafted file is required.\nS:U - The stack overflow corrupts kernel stack/memory within the same host kernel security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - Attacker-controlled out-of-bounds stack writes (and unbounded ssid_index growth past RTW_SSID_SCAN_AMOUNT) are memory-corruption primitives that can be leveraged for arbitrary kernel memory disclosure under standard stack-smash exploitation.\nI:H - This is a classic stack buffer overflow of Ssid[32] with attacker-chosen length and contents, enabling overwrite of adjacent stack state and return addresses for arbitrary write / control-flow hijack.\nA:H - Corrupting the on-stack ssid[RTW_SSID_SCAN_AMOUNT] array and frames beyond it reliably produces kernel oops/panic even without full code-execution exploitation."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/staging/r8188eu/os_dep/ioctl_linux.c"], "versions": [{"version": "2b42bd58b32155a1be4dd78991845dec05aaef9e", "lessThan": "ac2eab7de458f5e1210ce1237afab40a307075c8", "status": "affected", "versionType": "git"}, {"version": "2b42bd58b32155a1be4dd78991845dec05aaef9e", "lessThan": "c4bd6b72df4f01aa866ceb298466d6d07a6bd525", "status": "affected", "versionType": "git"}, {"version": "2b42bd58b32155a1be4dd78991845dec05aaef9e", "lessThan": "476bfda0be0f9669add92bff604ca78226cf53d1", "status": "affected", "versionType": "git"}, {"version": "2b42bd58b32155a1be4dd78991845dec05aaef9e", "lessThan": "bc10916e890948d8927a5c8c40fb5dc44be5e1b8", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/staging/r8188eu/os_dep/ioctl_linux.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.46", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17.14", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.18.3", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19", "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": "5.15", "versionEndExcluding": "5.15.46"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.17.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.18.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ac2eab7de458f5e1210ce1237afab40a307075c8"}, {"url": "https://git.kernel.org/stable/c/c4bd6b72df4f01aa866ceb298466d6d07a6bd525"}, {"url": "https://git.kernel.org/stable/c/476bfda0be0f9669add92bff604ca78226cf53d1"}, {"url": "https://git.kernel.org/stable/c/bc10916e890948d8927a5c8c40fb5dc44be5e1b8"}], "title": "staging: r8188eu: prevent ->Ssid overflow in rtw_wx_set_scan()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/staging/r8188eu/os_dep/ioctl_linux.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "ac2eab7de458f5e1210ce1237afab40a307075c8", "status": "affected", "version": "2b42bd58b32155a1be4dd78991845dec05aaef9e", "versionType": "git"}, {"lessThan": "c4bd6b72df4f01aa866ceb298466d6d07a6bd525", "status": "affected", "version": "2b42bd58b32155a1be4dd78991845dec05aaef9e", "versionType": "git"}, {"lessThan": "476bfda0be0f9669add92bff604ca78226cf53d1", "status": "affected", "version": "2b42bd58b32155a1be4dd78991845dec05aaef9e", "versionType": "git"}, {"lessThan": "bc10916e890948d8927a5c8c40fb5dc44be5e1b8", "status": "affected", "version": "2b42bd58b32155a1be4dd78991845dec05aaef9e", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/staging/r8188eu/os_dep/ioctl_linux.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.15"}, {"lessThan": "5.15", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.46", "versionType": "semver"}, {"lessThanOrEqual": "5.17.*", "status": "unaffected", "version": "5.17.14", "versionType": "semver"}, {"lessThanOrEqual": "5.18.*", "status": "unaffected", "version": "5.18.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.19", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FA8369C7-8B08-4709-9CE6-2131C7668313", "versionEndExcluding": "5.15.46", "versionStartIncluding": "5.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "15E2DD33-2255-4B76-9C15-04FF8CBAB252", "versionEndExcluding": "5.17.14", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8E122216-2E9E-4B3E-B7B8-D575A45BA3C2", "versionEndExcluding": "5.18.3", "versionStartIncluding": "5.18", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: r8188eu: prevent ->Ssid overflow in rtw_wx_set_scan()\n\nThis code has a check to prevent read overflow but it needs another\ncheck to prevent writing beyond the end of the ->Ssid[] array."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: staging: r8188eu: prevenir ->Ssid overflow en rtw_wx_set_scan() Este c\u00f3digo tiene una verificaci\u00f3n para prevenir el desbordamiento de lectura, pero necesita otra verificaci\u00f3n para prevenir la escritura m\u00e1s all\u00e1 del final de la matriz ->Ssid[]."}], "id": "CVE-2022-49405", "lastModified": "2026-08-04T10:17:46.787", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-02-26T07:01:17.037", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/476bfda0be0f9669add92bff604ca78226cf53d1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ac2eab7de458f5e1210ce1237afab40a307075c8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bc10916e890948d8927a5c8c40fb5dc44be5e1b8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c4bd6b72df4f01aa866ceb298466d6d07a6bd525"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: staging: r8188eu: prevent ->Ssid overflow in rtw_wx_set_scan()", "id": "2347864", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2347864"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nstaging: r8188eu: prevent ->Ssid overflow in rtw_wx_set_scan()\nThis code has a check to prevent read overflow but it needs another\ncheck to prevent writing beyond the end of the ->Ssid[] array."], "name": "CVE-2022-49405", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49405\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49405\nhttps://lore.kernel.org/linux-cve-announce/2025022651-CVE-2022-49405-7627@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-12T22:23:52.142145+00:00", "updated": "2025-07-12T22:23:52.142207+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}