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CVE-2026-68349— wifi: carl9170: fix buffer overflow in rx_stream failover path

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 2.6.37版本存在安全漏洞，该漏洞源于carl9170_rx_stream()函数在故障转移路径中复制第二个USB传输的完整tlen，而非限制在rx_failover_missing字节，导致缓冲区溢出，可能引发内核崩溃。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.20% · P10

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux a84fab3cbfdc427e7d366f1cc844f27b2084c26c< 5fb00a09e9b0375e1ad9d4fefc4a62a67e7ea658 affected
a84fab3cbfdc427e7d366f1cc844f27b2084c26c< 48c81fb523ecdc6a4b8654944ff32e499f21e6d0 affected
a84fab3cbfdc427e7d366f1cc844f27b2084c26c< a1ce01764a812c22a47d30aea78e347aebd3eea1 affected
a84fab3cbfdc427e7d366f1cc844f27b2084c26c< 5acfa18de66b6089b81c1c0bf1a3ae3c940ec39e affected
a84fab3cbfdc427e7d366f1cc844f27b2084c26c< b9dfee5e63ee9b5c47be9e344ebc5bd3f43fca78 affected
a84fab3cbfdc427e7d366f1cc844f27b2084c26c< 4503829843353dbb18b879c35be1cdfc9af677b7 affected
a84fab3cbfdc427e7d366f1cc844f27b2084c26c< 21f59906ea75618fdd46a7e32754d54fbee083ea affected
a84fab3cbfdc427e7d366f1cc844f27b2084c26c< a1a21995c2e1cc2ca6b2226cfe4f5f018370182a affected
… +10 more rows
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I. Basic Information for CVE-2026-68349

Vulnerability Information
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Vulnerability Title
wifi: carl9170: fix buffer overflow in rx_stream failover path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: carl9170: fix buffer overflow in rx_stream failover path The failover continuation in carl9170_rx_stream() copies the full tlen from the second USB transfer instead of capping at rx_failover_missing bytes. When both transfers are near maximum size, the total exceeds the 65535-byte failover SKB, triggering skb_over_panic. Limit the copy size to the missing byte count. [Fix checkpatch CHECK:PARENTHESIS_ALIGNMENT]
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 2.6.37版本存在安全漏洞，该漏洞源于carl9170_rx_stream()函数在故障转移路径中复制第二个USB传输的完整tlen，而非限制在rx_failover_missing字节，导致缓冲区溢出，可能引发内核崩溃。
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 a84fab3cbfdc427e7d366f1cc844f27b2084c26c ~ 5fb00a09e9b0375e1ad9d4fefc4a62a67e7ea658 -
Linux Linux 2.6.37 -

II. Public POCs for CVE-2026-68349

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III. Intelligence Information for CVE-2026-68349

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Patches & Fixes for CVE-2026-68349 (7)

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

CVE-2026-68136 9.8 CRITICAL net: gro: fix double aggregation of flush-marked skbs
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-2026-68156 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-2026-68159 9.8 CRITICAL libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE
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-2026-68144 9.8 CRITICAL phonet: pep: fix use-after-free in pep_get_sb()
CVE-2026-68170 9.8 CRITICAL mptcp: fix stale skb->sk reference on subflow close
CVE-2026-68302 9.8 CRITICAL amt: re-read skb header pointers after every pull
CVE-2026-68137 9.8 CRITICAL net/x25: fix use-after-free in x25_kill_by_neigh()
CVE-2026-68388 9.8 CRITICAL smb/client: handle overlapping allocated ranges in fallocate
CVE-2026-68426 9.8 CRITICAL xfrm: fix stale skb->prev after async crypto steals a GSO segment
CVE-2026-68385 9.8 CRITICAL s390/checksum: Fix csum_partial() without vector facility
CVE-2026-68127 9.8 CRITICAL ila: reload IPv6 header after pskb_may_pull in checksum adjust
CVE-2026-68117 9.8 CRITICAL tipc: clear sock->sk on the failed-insert path in tipc_sk_create()
CVE-2026-68381 9.8 CRITICAL ksmbd: pin conn during async oplock break notification
CVE-2026-68123 9.8 CRITICAL openvswitch: fix GSO userspace truncation underflow
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-2026-68349

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