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

wifi: libertas: reject short monitor TX frames

In monitor mode, lbs_hard_start_xmit() casts skb->data to a
radiotap TX header, skips that header, and then copies the 802.11
destination address from offset 4 in the remaining frame. The
generic length check only rejects zero-length and oversized skbs, so
a short monitor frame can be read past the end of the skb data.

Require enough bytes for the radiotap TX header and the destination
address field before using the monitor-mode header layout.

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History

Fri, 23 Oct 2026 18:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20

Fri, 23 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
First Time appeared Linux linux
Vendors & Products Linux linux

Fri, 23 Oct 2026 12:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: wifi: libertas: reject short monitor TX frames In monitor mode, lbs_hard_start_xmit() casts skb->data to a radiotap TX header, skips that header, and then copies the 802.11 destination address from offset 4 in the remaining frame. The generic length check only rejects zero-length and oversized skbs, so a short monitor frame can be read past the end of the skb data. Require enough bytes for the radiotap TX header and the destination address field before using the monitor-mode header layout.
Title wifi: libertas: reject short monitor TX frames
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-10-23T11:37:50.495Z

Reserved: 2026-09-25T10:25:14.378Z

Link: CVE-2026-98890

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-23T12:18:22.840

Modified: 2026-10-23T12:18:22.840

Link: CVE-2026-98890

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T17:45:17Z

Weaknesses