CVE-2026-64375
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. https://security-tracker.debian.org/tracker/DSA-6405-1
CSIRTS triage
- What
- The vulnerability protects ptrace_may_access() with exec_update_lock to prevent issues with FD links.
- Who is affected
- Deployments using the proc subsystem.
- Urgency
- Remediation is necessary to ensure security, with no known exploits.
- Action
- Implement the protection for ptrace_may_access() with exec_update_lock.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2026-64375
Get an email if CVE-2026-64375 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Advisory coverage (3)
- unknownDSA-6405-1 linux - security updatedebian · 2026-07-31
- highCVE-2026-64375: In the Linux kernel, the following vulnerability has been resolved: proc: protect ptrace_may_a…nvd · 2026-07-25
- highCVE-2026-64375: proc: protect ptrace_may_access() with exec_update_lock (FD links)msrc · 2026-07-14
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2026-64375)