In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btmtksdio, btmtkuart: validate WMT event length before struc
위협 신호 · CVSS · EPSS · KEV
이론적 심각도 점수
예측 데이터 없음
실측 악용 기록 없음
계획된 패치 주기 내 조치(60일 이내)
CVSS 벡터 · 메트릭
CVSS 벡터 정보 없음
상세 설명
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: btmtksdio, btmtkuart: validate WMT event length before struct access
btmtksdio.c and btmtkuart.c cast a received WMT event straight to
struct btmtk_hci_wmt_evt and read its op/flag fields without checking
the event is long enough to contain them, unlike btmtk.c. The
FUNC_CTRL case then further casts to struct btmtk_hci_wmt_evt_funcc
and reads its 2-byte status field, again without a length check.
Firmware that sends a short or malformed WMT event makes both drivers
read past the end of the received SKB.
Mirror btmtk.c: validate the base WMT header with skb_pull_data()
before touching any of its fields, and when a FUNC_CTRL event turns
out to be the short, header-only form (a plain enable/disable ack
with no status word), decode the result from the header's own flag
byte instead (0 = success, otherwise failure).
Verified setup on MT7920, MT7921, MT7922 and MT7925: no regression.
AI 심층 분석
공격 시나리오 · 재현 가능한 PoC 페이로드 · 즉시 적용 가능한 차단 패치를 한 번에 받아 보세요. 보안 운영팀이 그대로 점검·티켓팅에 쓸 수 있는 형태로 정리해 드립니다.