180 lines
9.4 KiB
JSON
180 lines
9.4 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-2022-49405",
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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": "2025-02-26T02:08:31.566Z",
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"datePublished": "2025-02-26T02:12:30.617Z",
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"dateUpdated": "2026-08-05T08:55:02.085Z"
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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": "2026-08-05T08:55:02.085Z"
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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\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."
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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 overflow is reached only via local wireless-extensions ioctls (SIOCSIWSCAN or SIOCSIWPRIV→rtw_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."
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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/staging/r8188eu/os_dep/ioctl_linux.c"
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],
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"versions": [
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{
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"version": "2b42bd58b32155a1be4dd78991845dec05aaef9e",
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"lessThan": "ac2eab7de458f5e1210ce1237afab40a307075c8",
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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": "2b42bd58b32155a1be4dd78991845dec05aaef9e",
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"lessThan": "c4bd6b72df4f01aa866ceb298466d6d07a6bd525",
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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": "2b42bd58b32155a1be4dd78991845dec05aaef9e",
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"lessThan": "476bfda0be0f9669add92bff604ca78226cf53d1",
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"status": "affected",
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{
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"lessThan": "bc10916e890948d8927a5c8c40fb5dc44be5e1b8",
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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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"drivers/staging/r8188eu/os_dep/ioctl_linux.c"
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],
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"versions": [
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{
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"version": "5.15",
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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": "5.15",
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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": "5.15.46",
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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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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "5.15.46"
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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": "5.15",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "5.18.3"
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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": "5.15",
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"versionEndExcluding": "5.19"
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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/ac2eab7de458f5e1210ce1237afab40a307075c8"
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},
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{
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"url": "https://git.kernel.org/stable/c/c4bd6b72df4f01aa866ceb298466d6d07a6bd525"
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},
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{
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"url": "https://git.kernel.org/stable/c/476bfda0be0f9669add92bff604ca78226cf53d1"
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},
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{
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"url": "https://git.kernel.org/stable/c/bc10916e890948d8927a5c8c40fb5dc44be5e1b8"
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}
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],
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"title": "staging: r8188eu: prevent ->Ssid overflow in rtw_wx_set_scan()",
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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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}
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} |