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VulnerabilityPublished Updated

CVE-2026-68349: Linux kernel · wifi: carl9170: fix buffer overflow in rx_stream failover path

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in b9dfee5e63ee9b5c47be9e344ebc5bd3f43fca78 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:19 UTC

Severity
Unrated

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

  1. Disclosed: evidence found.

    CVE published 10 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < b9dfee5e63ee9b5c47be9e344ebc5bd3f43fca78
Fixed in
  • b9dfee5e63ee9b5c47be9e344ebc5bd3f43fca78
LinuxLinuxAffected
  • ≥ a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < a1ce01764a812c22a47d30aea78e347aebd3eea1
Fixed in
  • a1ce01764a812c22a47d30aea78e347aebd3eea1
LinuxLinuxAffected
  • ≥ a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < a1a21995c2e1cc2ca6b2226cfe4f5f018370182a
Fixed in
  • a1a21995c2e1cc2ca6b2226cfe4f5f018370182a
LinuxLinuxAffected
  • ≥ a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < 4503829843353dbb18b879c35be1cdfc9af677b7
Fixed in
  • 4503829843353dbb18b879c35be1cdfc9af677b7
LinuxLinuxAffected
  • ≥ a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < 48c81fb523ecdc6a4b8654944ff32e499f21e6d0
Fixed in
  • 48c81fb523ecdc6a4b8654944ff32e499f21e6d0
LinuxLinuxAffected
  • ≥ a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < 21f59906ea75618fdd46a7e32754d54fbee083ea
Fixed in
  • 21f59906ea75618fdd46a7e32754d54fbee083ea

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

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