CVE-2026-43156: Linux kernel · net: usb: pegasus: enable basic endpoint checking
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in d2e7c898cc02dfe42443489a67a45ed616cb76e9 : update Linux kernel when convenient.
Data as of 6 Nov 2026, 16:03 UTC
Rated Medium by Threat Radar's AI analysis · 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 d2e7c898cc02dfe42443489a67a45ed616cb76e9, a3e64e950a3981a8199de9798f6d21261b959171, 2705709f6574a088aab246af72fc95f2fea51484 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 6 May 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 after version 2.6.12, as indicated by multiple fixed commit hashes. Users and administrators should update to a Linux kernel version that includes these fixes to ensure endpoint descriptors are properly validated during device probing. No additional mitigation is required beyond applying the official kernel update.
Description
A vulnerability in the Linux kernel's pegasus USB network driver allowed it to accept USB devices with endpoint descriptors that did not match expected transfer types. This was due to the driver using hardcoded endpoint pipes without verifying the endpoint descriptors. The issue was fixed by adding endpoint type checks during device probing to reject devices with mismatched descriptors.
References
- git.kernel.org/stable/c/a3e64e950a3981a8199de9798f6d21261b959171 (opens in a new tab)
- git.kernel.org/stable/c/229dc9b9db475ac900182bafe258943e0e054c6d (opens in a new tab)
- git.kernel.org/stable/c/26b3ec62fa1a94ac801feca47f040fc729b3c174 (opens in a new tab)
- git.kernel.org/stable/c/35854ed5c40b02f95824e44398f9d2ba33727203 (opens in a new tab)
- git.kernel.org/stable/c/67ba6b13dbcaf45681fb6758794c5ac5fa589a6c (opens in a new tab)
- git.kernel.org/stable/c/d2e7c898cc02dfe42443489a67a45ed616cb76e9 (opens in a new tab)
- git.kernel.org/stable/c/2705709f6574a088aab246af72fc95f2fea51484 (opens in a new tab)
- git.kernel.org/stable/c/3d7e6ce34f4fcc7083510c28b17a7c36462a25d4 (opens in a new tab)