Critical· 9.8official fix available
CVE-2022-49362
CVE-2022-49362 is a critical use-after-free vulnerability in the Linux kernel's NFS daemon (nfsd_file_put function), allowing attackers to execute arbitrary code or crash the system. It affects Linux kernel versions 5.19 and earlier.
publishedFeb 26, 2025
last modifiedAug 4, 2026
sourcesNVD
severity · cvss
9.8
critical · how bad it is
exploitation · epss
<1%
47th 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 Sep 3, 2026
An official fix is available, so this entry is kept for 30 days and then removed automatically.
01
Who is affected
Systems running Linux kernel 5.19 or earlier
02
Real-world impact
High risk of remote code execution or system crashes if exploited
03
Why this severity
CVSS 9.8 (critical) due to high confidentiality, integrity, and availability impact
04
What to do about it
official fix available
recommended steps
- 01Upgrade the Linux kernel to version 5.19 or later to apply the official fix
NVD-referenced vendor advisory
05
Timeline
- Feb 26, 2025 · Feb 26, 2025PublishedDisclosed and added to the National Vulnerability Database.
- Aug 4, 2026 · 2d agoAdvisory updatedThe NVD record was last revised.
- Aug 4, 2026 · 1d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.
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
(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 →