CVE-2026-100076

{"id": "CVE-2026-100076", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "973a629f19c226c8f6080badea7ccf59cc04233f", "versionType": "git"}, {"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "17260b5215d4ced17a733e2c027a76290e476fad", "versionType": "git"}, {"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "2f5e2752c2b4bad01df4523cfe2b41b702c60f00", "versionType": "git"}, {"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "6c9f6a3b9fdd31a0836b681053155b5997c0156e", "versionType": "git"}, {"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "c48e5aa01525577d6b6e782962a5bfb0e1535cb5", "versionType": "git"}, {"status": "affected", "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "41b8209376dffbd7b0b85c8bc4697d9166ac62ef", "versionType": "git"}], "programFiles": ["drivers/staging/rtl8723bs/core/rtw_mlme_ext.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.12"}, {"status": "unaffected", "version": "0", "lessThan": "4.12", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.191", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.160", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.114", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.52", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.2.6", "versionType": "semver", "lessThanOrEqual": "7.2.*"}, {"status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/staging/rtl8723bs/core/rtw_mlme_ext.c"], "defaultStatus": "affected"}]}], "published": "2026-09-25T14:17:14.440", "references": [{"url": "https://git.kernel.org/stable/c/17260b5215d4ced17a733e2c027a76290e476fad", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2f5e2752c2b4bad01df4523cfe2b41b702c60f00", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/41b8209376dffbd7b0b85c8bc4697d9166ac62ef", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6c9f6a3b9fdd31a0836b681053155b5997c0156e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/973a629f19c226c8f6080badea7ccf59cc04233f", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c48e5aa01525577d6b6e782962a5bfb0e1535cb5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Undergoing Analysis", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-401"}]}], "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()."}], "lastModified": "2026-10-30T13:18:27.620", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D970B695-AC3D-418F-8B5C-84798994EBE9", "versionEndExcluding": "6.18.52", "versionStartIncluding": "4.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BAFE7055-A65A-44F4-BD4B-BF067EAE17F3", "versionEndExcluding": "7.2.6", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}