{"apiVersion":"1.0","identifier":"CVE-2026-74554","description":"In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix out-of-bounds clear_bit in ath12k_mac_dp_peer_cleanup() ath12k_mac_dp_peer_cleanup() clears the ML peer ID slot on the free_ml_peer_id_map bitmap by indexing it with dp_peer->peer_id. That is wrong: dp_peer->peer_id for an MLO peer always carries the ATH12K_PEER_ML_ID_VALID bit (BIT(13)), so clear_bit() is invoked with index >= 0x2000, which is far outside the bitmap of ATH12K_MAX_MLO_PEERS (256) bits and corrupts memory adjacent to ah->free_ml_peer_id_map. The intended bitmap entry also never gets cleared, so subsequent ath12k_peer_ml_alloc() calls eventually run out of IDs. The ID without the VALID bit is what ath12k_peer_ml_alloc() returned and is stored in ahsta->ml_peer_id. Use that instead. While there, also reset ahsta->ml_peer_id to ATH12K_MLO_PEER_ID_INVALID so the bitmap and ahsta->ml_peer_id stay in sync. Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00302-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.115823.3","publishedAt":"2026-08-15T13:18:00","lastModifiedAt":"2026-08-17T06:19:53","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74554","cvssScore":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00204,"riskScore":0.9,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74554","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74554","en":"https://www.redsauce.net/en/cves/CVE-2026-74554","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74554","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74554","de":"https://www.redsauce.net/de/cves/CVE-2026-74554","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74554","el":"https://www.redsauce.net/el/cves/CVE-2026-74554"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74554"}}