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vuln-cve/data/2026/90xxx/CVE-2026-90017.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-90017",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-09-11T19:38:34.781Z",
"datePublished": "2026-09-16T10:33:22.827Z",
"dateUpdated": "2026-10-19T08:56:30.908Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-10-19T08:56:30.908Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix OOB read in rtw_action_frame_parse()\n\nrtw_action_frame_parse() takes a frame_len parameter but never\nactually checks it before indexing into the frame body:\n\n\tconst u8 *frame_body = frame + sizeof(struct ieee80211_hdr_3addr);\n\t...\n\tc = frame_body[0];\n\t...\n\ta = frame_body[1];\n\nframe_body already points 24 bytes (sizeof(struct\nieee80211_hdr_3addr)) into frame, so reading frame_body[0] and\nframe_body[1] requires frame_len >= 26. A management action frame\nshorter than that (e.g. exactly 24 bytes, the minimum a malicious\npeer can send) causes a 1-2 byte out-of-bounds read.\n\nThis is reachable from rtw_cfg80211_monitor_if_xmit_entry() and\ncfg80211_rtw_mgmt_tx() in ioctl_cfg80211.c, both of which pass\nattacker/user-influenced frame buffers and lengths straight through.\n\nAdd the missing length check before frame_body is dereferenced."
}
],
"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 - rtw_action_frame_parse() is reached from rtw_cfg80211_rx_action() on received 802.11 public action frames (OnAction → on_action_public → on_action_public_default). A nearby attacker can inject a truncated management action frame over Wi-Fi; kernel CNA guidance maps Wi-Fi frame injection to Adjacent.\nAC:L - An adjacent attacker fully controls the action-frame length and 802.11 header. A 24- or 25-byte management action frame (header only, or header plus category) reliably hits the missing length check with no race or attacker-uncontrollable layout.\nPR:N - Public action frames are dispatched by mgt_dispatcher()/OnAction() with only a local-MAC match and no association or 802.11 authentication against the sender, so no local account or capability is required.\nUI:N - The rtl8723bs driver processes received management action frames automatically while the interface is up; no extra victim click, mount, or connect action is required at exploit time.\nS:U - The out-of-bounds read occurs in the host rtl8723bs driver and does not cross a VM, IOMMU, or other security-authority boundary.\nC:L - The flaw reads only one or two bytes past a truncated 24- or 25-byte action frame. Per kernel CNA guidance this is a strictly bounded out-of-bounds read, not an arbitrary read primitive.\nI:N - The bug is a read-only out-of-bounds access of the category/action bytes; those values are not used to write kernel memory or hijack control flow.\nA:H - A 1-2 byte kernel out-of-bounds read can oops or panic on KASAN, redzone, or hardened kernels, and an adjacent peer can repeat truncated action frames to deny availability."
}
]
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/staging/rtl8723bs/core/rtw_ieee80211.c"
],
"versions": [
{
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "15081ff835b29e456da29303b32efc436df04695",
"status": "affected",
"versionType": "git"
},
{
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "310aaa8058d19cc431aedac0f5bb814e84479393",
"status": "affected",
"versionType": "git"
},
{
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "1410bce22351ba15d8e58287cbf09d55d7f21fc9",
"status": "affected",
"versionType": "git"
},
{
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "0b7f64c7bb9664777168768c6b44affb07dcbf24",
"status": "affected",
"versionType": "git"
},
{
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "136f9a3ab87ded8aaf081425cfb2059659dd9023",
"status": "affected",
"versionType": "git"
},
{
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "b041e3f35e0d262d42a711094ab594634d72744a",
"status": "affected",
"versionType": "git"
},
{
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "a54fd1a44862d263df9f8bc17fca3620be31addb",
"status": "affected",
"versionType": "git"
},
{
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "ff917923f4fb9c83717ba135ee47d7e4c1567bb7",
"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/rtl8723bs/core/rtw_ieee80211.c"
],
"versions": [
{
"version": "4.12",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.12",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.270",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.221",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.188",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.157",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.110",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.51",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.2.5",
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.3",
"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": "4.12",
"versionEndExcluding": "5.10.270"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.12",
"versionEndExcluding": "5.15.221"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.12",
"versionEndExcluding": "6.6.157"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.12",
"versionEndExcluding": "6.12.110"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.12",
"versionEndExcluding": "6.18.51"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.12",
"versionEndExcluding": "7.2.5"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.12",
"versionEndExcluding": "7.3"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/15081ff835b29e456da29303b32efc436df04695"
},
{
"url": "https://git.kernel.org/stable/c/310aaa8058d19cc431aedac0f5bb814e84479393"
},
{
"url": "https://git.kernel.org/stable/c/1410bce22351ba15d8e58287cbf09d55d7f21fc9"
},
{
"url": "https://git.kernel.org/stable/c/0b7f64c7bb9664777168768c6b44affb07dcbf24"
},
{
"url": "https://git.kernel.org/stable/c/136f9a3ab87ded8aaf081425cfb2059659dd9023"
},
{
"url": "https://git.kernel.org/stable/c/b041e3f35e0d262d42a711094ab594634d72744a"
},
{
"url": "https://git.kernel.org/stable/c/a54fd1a44862d263df9f8bc17fca3620be31addb"
},
{
"url": "https://git.kernel.org/stable/c/ff917923f4fb9c83717ba135ee47d7e4c1567bb7"
}
],
"title": "staging: rtl8723bs: fix OOB read in rtw_action_frame_parse()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
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