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CVE-2026-68199— wifi: ath6kl: fix OOB access from firmware ADDBA window size

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，该漏洞源于固件提供的ADDBA窗口大小超出有效范围时未正确处理，导致分配大小异常并引发越界访问。

CVSS 8.8 · High EPSS 0.41% · P33

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux bdcd81707973cf8aa9305337166f8ee842a050d4< c8e3ca7954d8233fbc54bd370c1827670f43c538 affected
bdcd81707973cf8aa9305337166f8ee842a050d4< f480d9910fcfe326db3a6281df80e83af347193e affected
bdcd81707973cf8aa9305337166f8ee842a050d4< 67bc9af4f41f2bdba20404fbd753b2a1bd6dd352 affected
bdcd81707973cf8aa9305337166f8ee842a050d4< d4558c140782180e2c80a7588a4af9f8675adfc4 affected
bdcd81707973cf8aa9305337166f8ee842a050d4< 5a65fd4722416061698b0a3277222381efbc4882 affected
bdcd81707973cf8aa9305337166f8ee842a050d4< 58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c affected
bdcd81707973cf8aa9305337166f8ee842a050d4< cec0a487cf38ac1f9bca240ffe8a94c5014b72f2 affected
bdcd81707973cf8aa9305337166f8ee842a050d4< 44126b6994eeb28f2103b638e698f40a1244f327 affected
… +10 more rows
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I. Basic Information for CVE-2026-68199

Vulnerability Information
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Vulnerability Title
wifi: ath6kl: fix OOB access from firmware ADDBA window size
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: fix OOB access from firmware ADDBA window size aggr_recv_addba_req_evt() logs a debug message when the firmware-supplied win_sz is outside [AGGR_WIN_SZ_MIN, AGGR_WIN_SZ_MAX] but does not return. The out-of-range win_sz is then used in TID_WINDOW_SZ() to compute a kzalloc size and stored in rxtid->hold_q_sz, leading to zero-size or overflowed allocations and subsequent out-of-bounds access. Clean up any previously active aggregation session for the TID first, then return early when win_sz is out of the valid range, instead of proceeding with a broken allocation size.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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，该漏洞源于固件提供的ADDBA窗口大小超出有效范围时未正确处理，导致分配大小异常并引发越界访问。
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 bdcd81707973cf8aa9305337166f8ee842a050d4 ~ c8e3ca7954d8233fbc54bd370c1827670f43c538 -
Linux Linux 3.2 -

II. Public POCs for CVE-2026-68199

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III. Intelligence Information for CVE-2026-68199

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Patches & Fixes for CVE-2026-68199 (8)

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

CVE-2026-68154 9.8 CRITICAL libceph: reject zero bucket types in crush_decode
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-2026-68388 9.8 CRITICAL smb/client: handle overlapping allocated ranges in fallocate
CVE-2026-68170 9.8 CRITICAL mptcp: fix stale skb->sk reference on subflow close
CVE-2026-68161 9.8 CRITICAL sctp: close UDP tunnel sockets during netns teardown
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-2026-68159 9.8 CRITICAL libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE
CVE-2026-68158 9.8 CRITICAL libceph: Fix multiplication overflow in decode_new_up_state_weight()
CVE-2026-68156 9.8 CRITICAL libceph: refresh auth->authorizer_buf{,_len} after authorizer update
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-2026-68302 9.8 CRITICAL amt: re-read skb header pointers after every pull
CVE-2026-68300 9.8 CRITICAL sctp: auth: verify auth requirement when auth_chunk is NULL
CVE-2026-68426 9.8 CRITICAL xfrm: fix stale skb->prev after async crypto steals a GSO segment
CVE-2026-68127 9.8 CRITICAL ila: reload IPv6 header after pskb_may_pull in checksum adjust
CVE-2026-68123 9.8 CRITICAL openvswitch: fix GSO userspace truncation underflow
CVE-2026-68144 9.8 CRITICAL phonet: pep: fix use-after-free in pep_get_sb()
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-2026-68199

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