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CVE-2026-98193— wifi: libipw: reject TKIP frames without a full MIC

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，已解决以下漏洞： wifi: libipw：拒绝缺少完整 MIC（消息完整性校验码）的 TKIP 帧 函数假设 skb（sk_buff）包含一个 8 字节的 Michael MIC。当 TKIP 帧过短时，无符号有效载荷长度会发生回绕（wrap），导致 函数读取超出 skb 边界的数据。 本修复在验证 MIC 之前检查其是否存在，并在验证器中统一使用现有的 常量来表示所有 MIC 长度。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.18% · P6

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux b453872c35cfcbdbf5a794737817f7d4e7b1b579< 9a7fb67364817710c96785ff86b71a2711ee92cb affected
b453872c35cfcbdbf5a794737817f7d4e7b1b579< ac7c08626f67844336086cf563f417566b76f0d7 affected
b453872c35cfcbdbf5a794737817f7d4e7b1b579< bb7ae8910cc886885aea95abb7c2e578a2341646 affected
b453872c35cfcbdbf5a794737817f7d4e7b1b579< 06f42accaf3c6aecab1dcc57f68dde6c06c8b380 affected
2.6.14 affected
< 2.6.14 unaffected
6.12.112≤ 6.12.* unaffected
6.18.54≤ 6.18.* unaffected
… +2 more rows
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I. Basic Information for CVE-2026-98193

Vulnerability Information
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Vulnerability Title
wifi: libipw: reject TKIP frames without a full MIC
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: libipw: reject TKIP frames without a full MIC libipw_michael_mic_verify() assumes that an skb contains an eight-byte Michael MIC. A short TKIP frame makes the unsigned payload length wrap, causing michael_mic() to read past the skb. Check that the MIC is present before verifying it, and use the existing MICHAEL_MIC_LEN constant for all MIC lengths in the verifier.
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 b453872c35cfcbdbf5a794737817f7d4e7b1b579 ~ 9a7fb67364817710c96785ff86b71a2711ee92cb -
Linux Linux 2.6.14 -

II. Public POCs for CVE-2026-98193

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III. Intelligence Information for CVE-2026-98193

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Patches & Fixes for CVE-2026-98193 (4)

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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