{"id":"CVE-2026-74648","summary":"staging: rtl8723bs: validate monitor transmit frame lengths","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: validate monitor transmit frame lengths\n\nrtw_cfg80211_monitor_if_xmit_entry() removes the radiotap header and\nthen reads the 802.11 frame control field without checking that a base\n802.11 header remains.\n\nThe data path also pulls the calculated 802.11, QoS and SNAP header\nspan before confirming that the skb contains it. A truncated frame can\ntherefore cause out-of-bounds reads or leave insufficient data for the\nEthernet address writes.\n\nReject frames that do not contain the base 802.11 header and data\nframes that do not contain their complete calculated header span.","modified":"2026-08-27T11:30:54.967313369Z","published":"2026-08-22T15:32:24.858Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74648.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6829665d050983907b560173e49dcc6c11cb2730"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7b0f62d2986a28e5e4188366bc2f4e2868b14790"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7edd3adb0c80d70b4237640275c559610f438476"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8b3e4ed9c35d3d3b64fcc23f4a1f22b37c1865b1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a3ac6d849de5f7abe14761d741bbb843ac793454"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bd88f6289b7e483216a9c1df15a0460ef9b02cb6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c5e5d78743992e235b76d2ebe5a403d60315aa8a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f03398d835f5249c49546f0eb0d0df6792b95d5f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74648.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74648"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"554c0a3abf216c991c5ebddcdb2c08689ecd290b"},{"fixed":"f03398d835f5249c49546f0eb0d0df6792b95d5f"},{"fixed":"a3ac6d849de5f7abe14761d741bbb843ac793454"},{"fixed":"7edd3adb0c80d70b4237640275c559610f438476"},{"fixed":"c5e5d78743992e235b76d2ebe5a403d60315aa8a"},{"fixed":"7b0f62d2986a28e5e4188366bc2f4e2868b14790"},{"fixed":"8b3e4ed9c35d3d3b64fcc23f4a1f22b37c1865b1"},{"fixed":"bd88f6289b7e483216a9c1df15a0460ef9b02cb6"},{"fixed":"6829665d050983907b560173e49dcc6c11cb2730"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74648.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.12.0"},{"fixed":"5.10.265"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.216"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.183"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.152"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.104"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.45"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74648.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}