CVE-2026-74680: Linux kernel · usb: atm: cxacru: properly kill rcv_urb on error in cxacru_cm()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in c2f811314be351d86b6ab41e9297ae80d8da6f86 : update Linux kernel when convenient.
Data as of 6 Nov 2026, 17:48 UTC
Rated Low by Threat Radar's AI analysis · CVSS not yet scored by NVD
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 c2f811314be351d86b6ab41e9297ae80d8da6f86, 61093d7f1144f6a15bac505df35e5f535ade2ac1, 6133b461058316e3ccba7331f974d110d4c08b23 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 22 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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AI-suggested
A fix is available and has been applied in the Linux kernel. Users should update to a kernel version that includes the fix identified by the provided commit hashes. No additional mitigation is required once the fix is applied.
Description
A vulnerability in the Linux kernel's usb atm cxacru driver caused the rcv_urb USB request block to remain active if an error occurred during the cxacru_cm() function. This improper handling could trigger warnings and unstable behavior during device initialization. The issue has been fixed by ensuring the rcv_urb is properly killed on error.
References
- git.kernel.org/stable/c/6133b461058316e3ccba7331f974d110d4c08b23 (opens in a new tab)
- git.kernel.org/stable/c/61093d7f1144f6a15bac505df35e5f535ade2ac1 (opens in a new tab)
- git.kernel.org/stable/c/645d98dbccdbfdbf0129f48822af7183492de091 (opens in a new tab)
- git.kernel.org/stable/c/993f7677949e3d72e360e86eed1f41c2511f75ed (opens in a new tab)
- git.kernel.org/stable/c/939b6a41f681aea52af678053072ee443068e93e (opens in a new tab)
- git.kernel.org/stable/c/2f73a065791d2a8e3f0bdf29248e33600359e865 (opens in a new tab)
- git.kernel.org/stable/c/0af047703dbed8224552587ed436f14a24371b46 (opens in a new tab)
- git.kernel.org/stable/c/c2f811314be351d86b6ab41e9297ae80d8da6f86 (opens in a new tab)