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CVE-2026-98890

Linux: wifi: libertas: reject short monitor TX frames

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in68c92c991ddb75dfd3fd62a94a1d4d2dde44dc3cAlso 6576baa3fdbaa91fa75e4ba27095f4b8a27349a8, 443fac3de65c76544b450b9f9903be8989150d55 and 7 moreCVE List
Published23 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

  • 68c92c991ddb75dfd3fd62a94a1d4d2dde44dc3cLinuxCVE List
  • 6576baa3fdbaa91fa75e4ba27095f4b8a27349a8LinuxCVE List
  • 443fac3de65c76544b450b9f9903be8989150d55LinuxCVE List
  • 13ff543e0b2c713aedeaadadde686686e949dc78LinuxCVE List
  • 5.10.271LinuxCVE List
  • 5.15.222LinuxCVE List
Show all 10 fixed versions

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 20

  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 68c92c991ddb75dfd3fd62a94a1d4d2dde44dc3cCVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d865dd6de8295f2bfaa83f0f5d49d2bef1543065CVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 6576baa3fdbaa91fa75e4ba27095f4b8a27349a8CVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b657cc98d7936c5d9ed7e0e1944ad0e1f36375bbCVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 443fac3de65c76544b450b9f9903be8989150d55CVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before cdcfd662c67833d89ee3d912efde2eb67c8a7326CVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 13ff543e0b2c713aedeaadadde686686e949dc78CVE List
  • Linuxaffected: all versions before 5.10.271CVE List
  • Linuxaffected: all versions before 5.15.222CVE List
  • Linuxaffected: all versions before 6.1.189CVE List
  • Linuxaffected: all versions before 6.6.158CVE List
  • Linuxaffected: all versions before 6.12.111CVE List
  • Linuxaffected: all versions before 6.18.53CVE List
  • Linuxunaffected: 5.10.271 through 5.10.*CVE List
  • Linuxunaffected: 5.15.222 through 5.15.*CVE List
  • Linuxunaffected: 6.1.189 through 6.1.*CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.111 through 6.12.*CVE List
  • Linuxunaffected: 6.18.53 through 6.18.*CVE List
  • Linuxunaffected: 7.2CVE List

References 7