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CVE-2026-68406— wifi: cfg80211: validate PMSR FTM preamble range

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.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于PMSR FTM请求解析未对preamble范围进行验证，导致接受枚举范围之外的preamble值。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 9bb7e0f24e7e7d00daa1219b14539e2e602649b2< 73ada9f23c2c7fac74474ea2a38ceb265bae17f1 affected
9bb7e0f24e7e7d00daa1219b14539e2e602649b2< 2b97fa1bce7731f6a244f3d4407c61858f09b93f affected
9bb7e0f24e7e7d00daa1219b14539e2e602649b2< 9b33f260db3971f572dda0b45dd28d477cf51ed1 affected
9bb7e0f24e7e7d00daa1219b14539e2e602649b2< 44ea65d779e2d23b2264fea6af2d0c666a3ec9fb affected
9bb7e0f24e7e7d00daa1219b14539e2e602649b2< 922d71fbaf99c1d5318151a0cb0a42ad448d07d9 affected
9bb7e0f24e7e7d00daa1219b14539e2e602649b2< cfbda103aeae61071a122a6fc2bfe98cffbd7165 affected
9bb7e0f24e7e7d00daa1219b14539e2e602649b2< 58320cb47df2accc7a20bb72c0150280732fa58f affected
9bb7e0f24e7e7d00daa1219b14539e2e602649b2< 36230936468f0ba4930e94aef496fc229d4bb951 affected
… +10 more rows
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I. Basic Information for CVE-2026-68406

Vulnerability Information
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Vulnerability Title
wifi: cfg80211: validate PMSR FTM preamble range
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: validate PMSR FTM preamble range PMSR FTM request parsing accepts preamble values outside the enumerated nl80211 preamble range. Reject out-of-range values before using them in the parser capability bit test using the policy. [drop unnecessary check]
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
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于PMSR FTM请求解析未对preamble范围进行验证，导致接受枚举范围之外的preamble值。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 ~ 73ada9f23c2c7fac74474ea2a38ceb265bae17f1 -
Linux Linux 5.0 -

II. Public POCs for CVE-2026-68406

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III. Intelligence Information for CVE-2026-68406

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Patches & Fixes for CVE-2026-68406 (8)

Same Patch Batch · Linux · 2026-08-10 · 344 CVEs total

CVE-2026-68117 9.8 CRITICAL tipc: clear sock->sk on the failed-insert path in tipc_sk_create()
CVE-2026-68160 9.8 CRITICAL ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()
CVE-2026-68161 9.8 CRITICAL sctp: close UDP tunnel sockets during netns teardown
CVE-2026-68123 9.8 CRITICAL openvswitch: fix GSO userspace truncation underflow
CVE-2026-68302 9.8 CRITICAL amt: re-read skb header pointers after every pull
CVE-2026-68381 9.8 CRITICAL ksmbd: pin conn during async oplock break notification
CVE-2026-68385 9.8 CRITICAL s390/checksum: Fix csum_partial() without vector facility
CVE-2026-68159 9.8 CRITICAL libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE
CVE-2026-68127 9.8 CRITICAL ila: reload IPv6 header after pskb_may_pull in checksum adjust
CVE-2026-68388 9.8 CRITICAL smb/client: handle overlapping allocated ranges in fallocate
CVE-2026-68144 9.8 CRITICAL phonet: pep: fix use-after-free in pep_get_sb()
CVE-2026-68137 9.8 CRITICAL net/x25: fix use-after-free in x25_kill_by_neigh()
CVE-2026-68136 9.8 CRITICAL net: gro: fix double aggregation of flush-marked skbs
CVE-2026-68170 9.8 CRITICAL mptcp: fix stale skb->sk reference on subflow close
CVE-2026-68426 9.8 CRITICAL xfrm: fix stale skb->prev after async crypto steals a GSO segment
CVE-2026-68156 9.8 CRITICAL libceph: refresh auth->authorizer_buf{,_len} after authorizer update
CVE-2026-68158 9.8 CRITICAL libceph: Fix multiplication overflow in decode_new_up_state_weight()
CVE-2026-68300 9.8 CRITICAL sctp: auth: verify auth requirement when auth_chunk is NULL
CVE-2026-68154 9.8 CRITICAL libceph: reject zero bucket types in crush_decode
CVE-2026-68124 9.6 CRITICAL mctp: serial: handle zero-length frames to prevent rx buffer overflow

Showing top 20 of 344 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-68406

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