Patchfirst
CVE-2025-37899 Public exploit High · 8.8 EPSS 0.9%

ksmbd: fix use-after-free in session logoff

Linux · Linux

Official description · CVE.org

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in session logoff The sess->user object can currently be in use by another thread, for example if another connection has sent a session setup request to bind to the session being free'd. The handler for that connection could be in the smb2_sess_setup function which makes use of sess->user.

Breakdown
58.7 / 100
Exploited
Yes, in VulnCheck KEV
Reports
0
Tactics
0/15

First seen exploited 5 months after disclosure. Public exploit code (PoC-in-GitHub) appeared 2 days after disclosure.

  1. Disclosedday 0
  2. Public exploit codePoC-in-GitHub+2 days
  3. First seen exploitedVulnCheck KEV evidence+5 mo

techniques

No techniques linked

No ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.

What security researchers reported

Not named in any threat report yet

Also mentioned in 1 community threat pulse (AlienVault OTX)

Weaker evidence

Pulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.

References

7 links, grouped by NVD tag
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