Vulnary
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Critical· 9.8official fix available

CVE-2026-64061

A critical vulnerability in the Linux kernel's netfs module (CVE-2026-64061) allows a use-after-free error during file gap handling, risking system crashes or data corruption. The fix ensures proper release of memory resources after read operations.

publishedJul 19, 2026
last modifiedJul 30, 2026
sourcesNVD
severity · cvss
9.8
critical · how bad it is
exploitation · epss
<1%
37th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Aug 19, 2026

An official fix is available, so this entry is kept for 30 days and then removed automatically.

01

Who is affected

Users of systems running the vulnerable Linux kernel version (specific version not listed in sources).

02

Real-world impact

Could lead to system instability or data loss if exploited, though no public exploits or known attacks exist yet.

03

Why this severity

CVSS 9.8 (critical): High confidence in exploitation potential and severe impact on confidentiality, integrity, and availability.

04

What to do about it

official fix available
recommended steps
  1. 011. Check for and apply the latest Linux kernel updates from your distribution's repository.
  2. 022. Reboot the system after installation to ensure the patched kernel version is active.

NVD-referenced Linux kernel patch

05

Timeline

  1. Jul 19, 2026 · 14d ago
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jul 20, 2026 · 13d ago
    Official fix available
    A vendor patch or mitigation now exists — see the remediation steps above.
  3. Jul 30, 2026 · 3d ago
    Advisory updated
    The NVD record was last revised.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →