Bug 2555123 (CVE-2026-98731) - CVE-2026-98731 kernel: Bluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_frame()
Summary: CVE-2026-98731 kernel: Bluetooth: btintel_pcie: fix plen overflow in btintel_...
Keywords:
Status: NEW
Alias: CVE-2026-98731
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-18 15:55 UTC by OSIDB Bzimport
Modified: 2026-10-23 00:19 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-10-18 15:55:45 UTC 
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.
Comment 1 Mauro Matteo Cascella 2026-10-23 00:09:45 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98731.mbox
Note You need to log in before you can comment on or make changes to this bug.