{"schema":"threatline.record/2","record":{"id":"CVE-2026-100076","aliases":[],"summary":"staging: rtl8723bs: fix xmit_frame/xmit_buf leaks on mgnt-frame error paths","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix xmit_frame/xmit_buf leaks on mgnt-frame error paths\n\nissue_beacon(), issue_probersp() and issue_asocrsp() obtain a management\nxmit_frame together with its xmit_buf from the driver's fixed-size\nmanagement-TX pools via alloc_mgtxmitframe(). On the normal path the frame\nis handed to dump_mgntframe(), which transfers ownership and eventually\nreturns both objects to their pools (the frame and, for beacons, the buf\nin rtl8723bs_mgnt_xmit(); other bufs via the pending-xmitbuf/TX-completion\npath).\n\nSeveral error/edge paths return early after a successful\nalloc_mgtxmitframe() but before dump_mgntframe(), so ownership is never\ntransferred and neither object is freed:\n\n  - issue_beacon(): beacon larger than 512 bytes\n  - issue_probersp(): cur_network->ie_length > MAX_IE_SZ\n  - issue_probersp(): kzalloc() of the SSID scratch buffer fails\n  - issue_asocrsp(): pkt_type is neither ASSOCRSP nor REASSOCRSP\n\nBecause alloc_mgtxmitframe() removes the frame and buf from their free\nlists (list_del_init) without placing them on any pending list, an\norphaned pair is on no list and referenced by nobody, so it is only\nreclaimed at driver teardown. Repeated hits progressively exhaust the\nmanagement-TX pools until alloc_mgtxmitframe() returns NULL and the\ninterface can no longer send beacons or probe/assoc responses.\n\nFree the frame and buffer on these paths, matching the existing correct\nerror handling in issue_assocreq().","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100076","source_modified_at":"2026-10-21T12:38:47.350Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"17260b5215d4ced17a733e2c027a76290e476fad","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"2f5e2752c2b4bad01df4523cfe2b41b702c60f00","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"6c9f6a3b9fdd31a0836b681053155b5997c0156e","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"c48e5aa01525577d6b6e782962a5bfb0e1535cb5","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"41b8209376dffbd7b0b85c8bc4697d9166ac62ef","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100076","source_modified_at":"2026-10-21T12:38:47.350Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"4.12","status":"affected"},{"version":"0","lessThan":"4.12","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.114","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.52","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.6","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100076","source_modified_at":"2026-10-21T12:38:47.350Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"17260b5215d4ced17a733e2c027a76290e476fad","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100076","source_modified_at":"2026-10-21T12:38:47.350Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"2f5e2752c2b4bad01df4523cfe2b41b702c60f00","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100076","source_modified_at":"2026-10-21T12:38:47.350Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6c9f6a3b9fdd31a0836b681053155b5997c0156e","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100076","source_modified_at":"2026-10-21T12:38:47.350Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"41b8209376dffbd7b0b85c8bc4697d9166ac62ef","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00114,"percentile":0.01389,"score_date":"2026-10-23"},"published_at":"2026-09-25T13:06:48.057Z","modified_at":"2026-10-21T12:38:47.350Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-100076","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:38:47.350Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-100076","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/17260b5215d4ced17a733e2c027a76290e476fad"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/2f5e2752c2b4bad01df4523cfe2b41b702c60f00"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6c9f6a3b9fdd31a0836b681053155b5997c0156e"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/c48e5aa01525577d6b6e782962a5bfb0e1535cb5"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/41b8209376dffbd7b0b85c8bc4697d9166ac62ef"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-21T12:38:47.350Z","content_hash":"a5593193fc4c52a82dbf24c2f98d796858d03292e35f76087c138e84914d388b"}}