CVE-2025-68817
Linux Debian vulnerability analysis and mitigation

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency

Under high concurrency, A tree-connection object (tcon) is freed on a disconnect path while another path still holds a reference and later executes *_put()/write on it.


SourceNVD

Related Linux Debian vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-40494CRITICAL9.8
  • Linux DebianLinux Debian
  • sail
NoNoApr 18, 2026
CVE-2026-40493CRITICAL9.8
  • Linux DebianLinux Debian
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CVE-2026-40492CRITICAL9.8
  • Linux DebianLinux Debian
  • sail
NoNoApr 18, 2026
CVE-2026-40491MEDIUM6.5
  • PythonPython
  • gdown
NoYesApr 18, 2026
CVE-2026-41254MEDIUM4
  • Linux DebianLinux Debian
  • lcms2
NoNoApr 18, 2026

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