CVE-2026-68349: Linux kernel · wifi: carl9170: fix buffer overflow in rx_stream failover path
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in b9dfee5e63ee9b5c47be9e344ebc5bd3f43fca78 : update Linux kernel when convenient.
Data as of 6 Nov 2026, 17:19 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-06.
- Patch
- Available – fixed in b9dfee5e63ee9b5c47be9e344ebc5bd3f43fca78, a1ce01764a812c22a47d30aea78e347aebd3eea1, a1a21995c2e1cc2ca6b2226cfe4f5f018370182a +5
Exploitation evidence
Disclosed: evidence found.
CVE published 10 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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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]
References
- git.kernel.org/stable/c/5fb00a09e9b0375e1ad9d4fefc4a62a67e7ea658 (opens in a new tab)
- git.kernel.org/stable/c/48c81fb523ecdc6a4b8654944ff32e499f21e6d0 (opens in a new tab)
- git.kernel.org/stable/c/a1ce01764a812c22a47d30aea78e347aebd3eea1 (opens in a new tab)
- git.kernel.org/stable/c/5acfa18de66b6089b81c1c0bf1a3ae3c940ec39e (opens in a new tab)
- git.kernel.org/stable/c/b9dfee5e63ee9b5c47be9e344ebc5bd3f43fca78 (opens in a new tab)
- git.kernel.org/stable/c/4503829843353dbb18b879c35be1cdfc9af677b7 (opens in a new tab)
- git.kernel.org/stable/c/21f59906ea75618fdd46a7e32754d54fbee083ea (opens in a new tab)
- git.kernel.org/stable/c/a1a21995c2e1cc2ca6b2226cfe4f5f018370182a (opens in a new tab)