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CVE-2026-98194

Linux: wifi: libertas_tf: fix UAF in lbtf_free_adapter()

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)0.18%Chance of exploitation activity in the next 30 days, higher than 7% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3fb3663260ec396f86b733aab9f81fac6669d2faAlso 41b1a4d545ec348b7d5324b6d4f4c6a3e0326d46, 2b99bfc5a127ce8cd6a887d82815fc2e712f365b and 1 moreCVE List
Published6 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 3fb3663260ec396f86b733aab9f81fac6669d2faLinuxCVE List
  • 41b1a4d545ec348b7d5324b6d4f4c6a3e0326d46LinuxCVE List
  • 2b99bfc5a127ce8cd6a887d82815fc2e712f365bLinuxCVE List
  • 04c837d413dc11a91e0275b08b9e35a6c111175eLinuxCVE List

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_tf: fix UAF in lbtf_free_adapter()

lbtf_free_adapter() calls lbtf_free_cmd_buffer() to free the command buffers before calling timer_delete_sync() to wait for the command timer callback. If the timer callback (command_timer_fn) is already running when lbtf_free_cmd_buffer() frees the command array, the callback dereferences priv->cur_cmd->cmdbuf which points to freed memory.

Swap the order so that timer_delete_sync() runs first, ensuring any in-flight callback has completed before the command buffers are freed.

Text from CVE List

Affected versions 18

  • Linuxaffected: 06b16ae5319251c26377afcb401e46056d5673f4 before 3fb3663260ec396f86b733aab9f81fac6669d2faCVE List
  • Linuxaffected: 06b16ae5319251c26377afcb401e46056d5673f4 before f6c3fa0d17ca0c9e6033bb45f52e33b27a9a40e6CVE List
  • Linuxaffected: 06b16ae5319251c26377afcb401e46056d5673f4 before b4745d6063758c681d33affca9733bbd356b6ea1CVE List
  • Linuxaffected: 06b16ae5319251c26377afcb401e46056d5673f4 before 41b1a4d545ec348b7d5324b6d4f4c6a3e0326d46CVE List
  • Linuxaffected: 06b16ae5319251c26377afcb401e46056d5673f4 before 2b99bfc5a127ce8cd6a887d82815fc2e712f365bCVE List
  • Linuxaffected: 06b16ae5319251c26377afcb401e46056d5673f4 before e82536aad653e27c8ca7a8e0f6f816bc3f853ec3CVE List
  • Linuxaffected: 06b16ae5319251c26377afcb401e46056d5673f4 before 04c837d413dc11a91e0275b08b9e35a6c111175eCVE List
  • Linuxaffected: 06b16ae5319251c26377afcb401e46056d5673f4 before bbb9a0ab96d44a64529aafc7a16de460a1712f6aCVE List
  • Linuxaffected: 2.6.28CVE List
  • Linuxunaffected: all versions before 2.6.28CVE 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: 6.12.112 through 6.12.*CVE List
  • Linuxunaffected: 6.18.54 through 6.18.*CVE List
  • Linuxunaffected: 7.2.8 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 8