staging: rtl8723bs: fix OOB read in rtw_action_frame_parse()
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB read in rtw_action_frame_parse() rtw_action_frame_parse() takes a frame_len parameter but never actually checks it before indexing into the frame body: const u8 *frame_body = frame + sizeof(struct ieee80211_hdr_3addr); ... c = frame_body[0]; ... a = frame_body[1]; frame_body already points 24 bytes (sizeof(struct ieee80211_hdr_3addr)) into frame, so reading frame_body[0] and frame_body[1] requires frame_len >= 26. A management action frame shorter than that (e.g. exactly 24 bytes, the minimum a malicious peer can send) causes a 1-2 byte out-of-bounds read. This is reachable from rtw_cfg80211_monitor_if_xmit_entry() and cfg80211_rtw_mgmt_tx() in ioctl_cfg80211.c, both of which pass attacker/user-influenced frame buffers and lengths straight through. Add the missing length check before frame_body is dereferenced.
CVE-2026-90017
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-90017
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "15081ff835b29e456da29303b32efc436df04695",
"versionType": "git"
},
{
"status": "affected",
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "310aaa8058d19cc431aedac0f5bb814e84479393",
"versionType": "git"
},
{
"status": "affected",
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "1410bce22351ba15d8e58287cbf09d55d7f21fc9",
"versionType": "git"
},
{
"status": "affected",
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "0b7f64c7bb9664777168768c6b44affb07dcbf24",
"versionType": "git"
},
{
"status": "affected",
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "136f9a3ab87ded8aaf081425cfb2059659dd9023",
"versionType": "git"
},
{
"status": "affected",
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "b041e3f35e0d262d42a711094ab594634d72744a",
"versionType": "git"
},
{
"status": "affected",
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "a54fd1a44862d263df9f8bc17fca3620be31addb",
"versionType": "git"
},
{
"status": "affected",
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"lessThan": "ff917923f4fb9c83717ba135ee47d7e4c1567bb7",
"versionType": "git"
}
],
"programFiles": [
"drivers/staging/rtl8723bs/core/rtw_ieee80211.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.12"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.12",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/staging/rtl8723bs/core/rtw_ieee80211.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90017
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #36447 · Revision 1
- Added to Heist Feed
- Publisher date