243 lines
13 KiB
JSON
243 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-2025-68256",
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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": "2025-12-16T13:41:40.267Z",
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"datePublished": "2025-12-16T14:44:58.829Z",
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"dateUpdated": "2026-08-05T12:10:31.326Z"
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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": "2026-08-05T12:10:31.326Z"
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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: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser\n\nThe Information Element (IE) parser rtw_get_ie() trusted the length\nbyte of each IE without validating that the IE body (len bytes after\nthe 2-byte header) fits inside the remaining frame buffer. A malformed\nframe can advertise an IE length larger than the available data, causing\nthe parser to increment its pointer beyond the buffer end. This results\nin out-of-bounds reads or, depending on the pattern, an infinite loop.\n\nFix by validating that (offset + 2 + len) does not exceed the limit\nbefore accepting the IE or advancing to the next element.\n\nThis prevents OOB reads and ensures the parser terminates safely on\nmalformed frames."
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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 - Attacker-controlled 802.11 management frames reach the parser over the air, requiring only proximity to the affected RTL8723BS WiFi device.\nAC:L - The malformed IE length is directly attacker-controlled and deterministically triggers the faulty parsing without a race or condition outside the attacker’s influence.\nPR:N - Beacons and authentication frames are processed before authentication, while the 802.11w path performs the dangerous write before MIC verification.\nUI:N - An active, scanning, connecting, or connected wireless interface automatically processes injected frames without victim action.\nS:U - The vulnerability compromises the host kernel containing the affected driver and does not cross a separate virtualization or hardware security boundary.\nC:H - The unchecked length can drive substantial out-of-bounds reads of kernel memory through downstream callers, including copying out-of-frame data into retransmitted authentication state.\nI:H - A truncated Challenge IE can drive a 255-byte memcpy into a 128-byte MLME buffer, and a malformed MMIE can cause an offset-controlled eight-byte heap overwrite before cryptographic verification.\nA:H - The out-of-bounds reads and writes can cause kernel faults or memory corruption, and malformed frames can be injected repeatedly to crash or destabilize the device."
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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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"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/rtl8723bs/core/rtw_ieee80211.c"
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],
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"lessThan": "9829c6e1b2e4180fd18315252ad6faeab6128076",
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"status": "affected",
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"lessThan": "df191dd9f4c7249d98ada55634fa8ac19089b8cb",
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"status": "affected",
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"versionType": "git"
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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/rtl8723bs/core/rtw_ieee80211.c"
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],
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"versions": [
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{
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"version": "4.12",
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"status": "affected"
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},
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{
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"version": "0",
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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": "5.15.203",
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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": "6.1.160",
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"lessThanOrEqual": "6.1.*",
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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": "6.6.120",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.62",
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"lessThanOrEqual": "6.12.*",
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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": "6.17.12",
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"lessThanOrEqual": "6.17.*",
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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": "6.18.1",
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"lessThanOrEqual": "6.18.*",
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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": "6.19",
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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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"title": "staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser",
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