CVE-2026-98731 PUBLISHED

Bluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_frame()

Assigner: Linux
Reserved: 25.09.2026 Published: 18.10.2026 Updated: 18.10.2026

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_frame()

plen is u16 and computed as HDR_SIZE + dlen. For ACL/ISO frames dlen is a 16-bit field, so a value >= 0xFFFC wraps the sum, bypassing the "skb->len < plen" check and letting skb_trim() truncate the packet.

Widen plen to u32 so the addition cannot wrap.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from c2b636b3f788d10486a6691ad6dd3ec4c93bd78e to c3a3842c109ac130c6db3aa0014cc8cd344928ad (excl.)
  • affected from c2b636b3f788d10486a6691ad6dd3ec4c93bd78e to c3b5e6da4ba6485bffda9753d8339c28855207aa (excl.)
  • affected from c2b636b3f788d10486a6691ad6dd3ec4c93bd78e to b2cb5ea1dc8cf829816370fc1399e6a1d2d1bca9 (excl.)
  • affected from c2b636b3f788d10486a6691ad6dd3ec4c93bd78e to 7dbeb6935ac331b0cba6c41cabd8e9d02d5f64ea (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.10 is affected
  • unaffected from 0 to 6.10 (excl.)
  • unaffected from 6.12.113 to 6.12.* (incl.)
  • unaffected from 6.18.56 to 6.18.* (incl.)
  • unaffected from 7.2.10 to 7.2.* (incl.)
  • unaffected from 7.3-rc6 to * (incl.)

References