{"id":"CVE-2026-100076","title":"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 togethe…","summary":"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 togethe…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 6c9f6a3b9fdd31a0836b681053155b5997c0156e","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < c48e5aa01525577d6b6e782962a5bfb0e1535cb5","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 41b8209376dffbd7b0b85c8bc4697d9166ac62ef","Linux 4.12"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T14:17:14.440","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100076","references":[{"url":"https://git.kernel.org/stable/c/41b8209376dffbd7b0b85c8bc4697d9166ac62ef","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6c9f6a3b9fdd31a0836b681053155b5997c0156e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c48e5aa01525577d6b6e782962a5bfb0e1535cb5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-25T14:09:46.374Z","slug":"CVE-2026-100076","body":"## Overview\n\nIn 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().\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}