CVE-2026-23021: Linux kernel · net: usb: pegasus: fix memory leak in update_eth_regs_async()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in ce6eef731aba23a988decea1df3b08cf978f7b01 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 11:54 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- 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, 2026-06-10.
- Patch
- Available – fixed in ce6eef731aba23a988decea1df3b08cf978f7b01, afa27621a28af317523e0836dad430bec551eb54, ac5d92d2826dec51e5d4c6854865bc5817277452 +4
Exploitation evidence
Disclosed: evidence found.
CVE published 31 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 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: net: usb: pegasus: fix memory leak in update_eth_regs_async() When asynchronously writing to the device registers and if usb_submit_urb() fail, the code fail to release allocated to this point resources.
References
- git.kernel.org/stable/c/5397ea6d21c35a17707e201a60761bdee00bcc4e (opens in a new tab)
- git.kernel.org/stable/c/a40af9a2904a1ab8ce61866ebe2a894ef30754ba (opens in a new tab)
- git.kernel.org/stable/c/ac5d92d2826dec51e5d4c6854865bc5817277452 (opens in a new tab)
- git.kernel.org/stable/c/93f18eaa190374e0f2d253e3b1a65cee19a7abe6 (opens in a new tab)
- git.kernel.org/stable/c/471dfb97599eec74e0476046b3ef8e7037f27b34 (opens in a new tab)
- git.kernel.org/stable/c/ce6eef731aba23a988decea1df3b08cf978f7b01 (opens in a new tab)
- git.kernel.org/stable/c/afa27621a28af317523e0836dad430bec551eb54 (opens in a new tab)