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CVE-2026-98194— wifi: libertas_tf: fix UAF in lbtf_free_adapter()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已修复以下漏洞： wifi: libertas_tf: 修复 lbtf_free_adapter() 中的 Use-After-Free (UAF) 漏洞 lbtf_free_adapter() 函数在调用 timer_delete_sync() 等待命令定时器回调函数执行完毕之前，先调用 lbtf_free_cmd_buffer() 释放命令缓冲区。然而，如果在 lbtf_free_cmd_buffer() 释放命令数组时，该定时器回调函数（command_timer_fn）正在运行，则回

AI Predicted 7.8 Difficulty: Moderate EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 06b16ae5319251c26377afcb401e46056d5673f4< 3fb3663260ec396f86b733aab9f81fac6669d2fa affected
06b16ae5319251c26377afcb401e46056d5673f4< f6c3fa0d17ca0c9e6033bb45f52e33b27a9a40e6 affected
06b16ae5319251c26377afcb401e46056d5673f4< b4745d6063758c681d33affca9733bbd356b6ea1 affected
06b16ae5319251c26377afcb401e46056d5673f4< 41b1a4d545ec348b7d5324b6d4f4c6a3e0326d46 affected
06b16ae5319251c26377afcb401e46056d5673f4< 2b99bfc5a127ce8cd6a887d82815fc2e712f365b affected
06b16ae5319251c26377afcb401e46056d5673f4< e82536aad653e27c8ca7a8e0f6f816bc3f853ec3 affected
06b16ae5319251c26377afcb401e46056d5673f4< 04c837d413dc11a91e0275b08b9e35a6c111175e affected
06b16ae5319251c26377afcb401e46056d5673f4< bbb9a0ab96d44a64529aafc7a16de460a1712f6a affected
… +10 more rows
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I. Basic Information for CVE-2026-98194

Vulnerability Information
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Vulnerability Title
wifi: libertas_tf: fix UAF in lbtf_free_adapter()
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 06b16ae5319251c26377afcb401e46056d5673f4 ~ 3fb3663260ec396f86b733aab9f81fac6669d2fa -
Linux Linux 2.6.28 -

II. Public POCs for CVE-2026-98194

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III. Intelligence Information for CVE-2026-98194

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Patches & Fixes for CVE-2026-98194 (8)

Same Patch Batch · Linux · 2026-10-06 · 208 CVEs total

CVE-2026-98323 9.8 CRITICAL RDMA/siw: Bound fragmented header copies by the remaining length
CVE-2026-98365 9.8 CRITICAL RDMA/rxe: Fix integer overflow in mr_check_range() leading to OOB access
CVE-2026-98282 8.8 HIGH powerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba
CVE-2026-98283 8.8 HIGH KVM: PPC: Book3S HV: fix use-after-free in kvmhv_emulate_tlbie_all_lpid()
CVE-2026-98339 8.8 HIGH wifi: cfg80211: don't filter by BSS type when removing stale entries
CVE-2026-98171 8.8 HIGH smb: client: fix next_buffer UAF and NextCommand bounds in compound PDUs
CVE-2026-98261 8.1 HIGH cifs: Fix server use-after-free in cifs_chan_skip_or_disable()
CVE-2026-98357 8.1 HIGH IB/isert: wait for deferred control PDU completions before releasing the connection
CVE-2026-98239 8.1 HIGH net: lan743x: fix RX checksum use-after-free
CVE-2026-98341 7.8 HIGH wifi: cfg80211: don't free driver-owned scan requests
CVE-2026-98324 7.8 HIGH dmaengine: pxa: fix double counting of the hw descriptors
CVE-2026-98228 7.8 HIGH mips: select CONFIG_WEAK_REORDERING_BEYOND_LLSC from CONFIG_EYEQ
CVE-2026-98229 7.8 HIGH xfrm: save input state data before secpath resets
CVE-2026-98320 7.8 HIGH netfilter: flowtable: hold reference on ct until flow is released
CVE-2026-98318 7.8 HIGH smb: client: validate absolute native symlink targets before NT fixups
CVE-2026-98315 7.8 HIGH ntfs: protect runlist updates with the runlist lock
CVE-2026-98260 7.8 HIGH exec: Cleanup POSIX timers right after de_thread()
CVE-2026-98256 7.8 HIGH signal: Prevent exec() race
CVE-2026-98258 7.8 HIGH posix-cpu-timers: Prevent freeing a timer which is queued on the expiry list
CVE-2026-98254 7.8 HIGH swiotlb: use the adjusted address for the highmem page lookup

Showing top 20 of 208 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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