Linux Kernel up to 6.0.2 memdup_user memory leak

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel up to 5.4.219/5.10.149/5.15.74/5.19.16/6.0.2. Impacted is the function memdup_user. The manipulation results in memory leak. This vulnerability is identified as CVE-2022-50348. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 5.4.219/5.10.149/5.15.74/5.19.16/6.0.2. Affected is the function memdup_user. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: nfsd: Fix a memory leak in an error handling path If this memdup_user() call fails, the memory allocated in a previous call a few lines above should be freed. Otherwise it leaks.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2022-50348 since 09/16/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 265283 (Linux Distros Unpatched Vulnerability : CVE-2022-50348), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.220, 5.10.150, 5.15.75, 5.19.17 or 6.0.3 eliminates this vulnerability. Applying the patch acc393aecda05bf64ed13b732931462e07a1bf08/e060c4b9f33c1fca74df26d57a98e784295327e6/aed8816305575b38dcc77feb6f1bc1d0ed32f5b8/733dd17158f96aaa25408dc39bbb2738fda9300e/cc3bca2110ac85cd964da997ef83d84cab0d49fb/fd1ef88049de09bc70d60b549992524cfc0e66ff is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (265283) and CERT Bund (WID-SEC-2025-2077). Once again VulDB remains the best source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux
  • Dell Secure Connect Gateway
  • Dell NetWorker

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 265283
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2022-50348

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.4.220/5.10.150/5.15.75/5.19.17/6.0.3
Patch: acc393aecda05bf64ed13b732931462e07a1bf08/e060c4b9f33c1fca74df26d57a98e784295327e6/aed8816305575b38dcc77feb6f1bc1d0ed32f5b8/733dd17158f96aaa25408dc39bbb2738fda9300e/cc3bca2110ac85cd964da997ef83d84cab0d49fb/fd1ef88049de09bc70d60b549992524cfc0e66ff

Timelineinfo

09/16/2025 Advisory disclosed
09/16/2025 +0 days CVE reserved
09/16/2025 +0 days VulDB entry created
02/23/2026 +160 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-50348 (🔒)
GCVE (CVE): GCVE-0-2022-50348
GCVE (VulDB): GCVE-100-324516
CERT Bund: WID-SEC-2025-2077 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 09/16/2025 20:37
Updated: 02/23/2026 10:49
Changes: 09/16/2025 20:37 (58), 09/18/2025 16:50 (2), 10/21/2025 01:40 (7), 12/01/2025 23:50 (10), 12/27/2025 08:27 (1), 02/23/2026 10:49 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!