{"id":"CVE-2026-90017","title":"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…","summary":"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…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 15081ff835b29e456da29303b32efc436df04695","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 310aaa8058d19cc431aedac0f5bb814e84479393","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 1410bce22351ba15d8e58287cbf09d55d7f21fc9","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 0b7f64c7bb9664777168768c6b44affb07dcbf24","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 136f9a3ab87ded8aaf081425cfb2059659dd9023","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < b041e3f35e0d262d42a711094ab594634d72744a","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < a54fd1a44862d263df9f8bc17fca3620be31addb","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < ff917923f4fb9c83717ba135ee47d7e4c1567bb7","Linux 4.12"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T15:18:25.347","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90017","references":[{"url":"https://git.kernel.org/stable/c/0b7f64c7bb9664777168768c6b44affb07dcbf24","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/136f9a3ab87ded8aaf081425cfb2059659dd9023","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1410bce22351ba15d8e58287cbf09d55d7f21fc9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/15081ff835b29e456da29303b32efc436df04695","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/310aaa8058d19cc431aedac0f5bb814e84479393","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a54fd1a44862d263df9f8bc17fca3620be31addb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b041e3f35e0d262d42a711094ab594634d72744a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ff917923f4fb9c83717ba135ee47d7e4c1567bb7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:53.939Z","epss":0.00353,"epssPercentile":0.28998,"slug":"CVE-2026-90017","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":205009,"id":"CVE-2026-90017","ts":1789570703216,"field":"cvss","old":null,"new":"7.1"},{"seq":205008,"id":"CVE-2026-90017","ts":1789570703216,"field":"severity","old":"none","new":"high"}]}