CVE-2026-98025: Linux kernel · net: usb: cx82310_eth: drop URB after 0xffff reboot sentinel to prevent partial_data
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in d0c1ce6ef4cefe568e19afa83f543caa3c3c0873 : patch Linux kernel soon.
Data as of 26 Oct 2026, 13:47 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 13% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in d0c1ce6ef4cefe568e19afa83f543caa3c3c0873, 659654654eb140851467af41d610473c100c7975, 00520cdd21ea6a9b5dc8d53bbd241620d2059554 +7
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 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
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available and has been applied in Linux kernel versions 4.20, 5.5, and later. Users should upgrade to these or later kernel versions to remediate the vulnerability. No additional mitigation is required as the patch fully addresses the issue.
Description
A heap overflow vulnerability in the Linux kernel's cx82310_eth USB network driver was fixed. The flaw occurs when a URB with a 0xffff length sentinel bypasses the MTU check, causing an oversized copy into a fixed-size buffer. This leads to a heap overflow and delivery of malformed large frames to the network stack. The fix ensures that the reboot sentinel URB is dropped early, preventing partial data overflow.
References
- git.kernel.org/stable/c/d0c1ce6ef4cefe568e19afa83f543caa3c3c0873 (opens in a new tab)
- git.kernel.org/stable/c/0dbc89e664b4609ad672b5bdeef60df251294b8f (opens in a new tab)
- git.kernel.org/stable/c/00520cdd21ea6a9b5dc8d53bbd241620d2059554 (opens in a new tab)
- git.kernel.org/stable/c/59bf9e94bdc49557f07d87164269daff7340f4d6 (opens in a new tab)
- git.kernel.org/stable/c/3bd689409bb1c93bdc6dd8ec6cbf5161bc4f0287 (opens in a new tab)
- git.kernel.org/stable/c/659654654eb140851467af41d610473c100c7975 (opens in a new tab)
- git.kernel.org/stable/c/237c9ae7145772af147e4665f158938350fa5658 (opens in a new tab)
- git.kernel.org/stable/c/5d50e90add8b4a978395e893e81954d19d58a7c5 (opens in a new tab)