{"api_version":"1","generated_at":"2026-09-26T08:49:06+00:00","cve":"CVE-2026-100076","urls":{"html":"https://cve.report/CVE-2026-100076","api":"https://cve.report/api/cve/CVE-2026-100076.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-100076","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-100076"},"summary":{"title":"staging: rtl8723bs: fix xmit_frame/xmit_buf leaks on mgnt-frame error paths","description":"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().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 14:17:14","updated_at":"2026-09-25 14:17:14"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/6c9f6a3b9fdd31a0836b681053155b5997c0156e","name":"https://git.kernel.org/stable/c/6c9f6a3b9fdd31a0836b681053155b5997c0156e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c48e5aa01525577d6b6e782962a5bfb0e1535cb5","name":"https://git.kernel.org/stable/c/c48e5aa01525577d6b6e782962a5bfb0e1535cb5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/41b8209376dffbd7b0b85c8bc4697d9166ac62ef","name":"https://git.kernel.org/stable/c/41b8209376dffbd7b0b85c8bc4697d9166ac62ef","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-100076","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100076","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b 6c9f6a3b9fdd31a0836b681053155b5997c0156e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b c48e5aa01525577d6b6e782962a5bfb0e1535cb5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b 41b8209376dffbd7b0b85c8bc4697d9166ac62ef git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/staging/rtl8723bs/core/rtw_mlme_ext.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6c9f6a3b9fdd31a0836b681053155b5997c0156e","status":"affected","version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","versionType":"git"},{"lessThan":"c48e5aa01525577d6b6e782962a5bfb0e1535cb5","status":"affected","version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","versionType":"git"},{"lessThan":"41b8209376dffbd7b0b85c8bc4697d9166ac62ef","status":"affected","version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/staging/rtl8723bs/core/rtw_mlme_ext.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.12"},{"lessThan":"4.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"4.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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()."}],"providerMetadata":{"dateUpdated":"2026-09-25T13:06:48.057Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/6c9f6a3b9fdd31a0836b681053155b5997c0156e"},{"url":"https://git.kernel.org/stable/c/c48e5aa01525577d6b6e782962a5bfb0e1535cb5"},{"url":"https://git.kernel.org/stable/c/41b8209376dffbd7b0b85c8bc4697d9166ac62ef"}],"title":"staging: rtl8723bs: fix xmit_frame/xmit_buf leaks on mgnt-frame error paths","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-100076","datePublished":"2026-09-25T13:06:48.057Z","dateReserved":"2026-09-25T10:25:14.456Z","dateUpdated":"2026-09-25T13:06:48.057Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 14:17:14","lastModifiedDate":"2026-09-25 14:17:14","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"100076","Ordinal":"1","Title":"staging: rtl8723bs: fix xmit_frame/xmit_buf leaks on mgnt-frame ","CVE":"CVE-2026-100076","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"100076","Ordinal":"1","NoteData":"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().","Type":"Description","Title":"staging: rtl8723bs: fix xmit_frame/xmit_buf leaks on mgnt-frame "}]}}}