Linux Kernel up to 6.17.9 pegasus_probe wMaxPacketSize allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.17.9. This affects the function pegasus_probe. This manipulation of the argument wMaxPacketSize causes allocation of resources. This vulnerability is handled as CVE-2025-68217. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.17.9 and classified as critical. Affected by this vulnerability is the function pegasus_probe. The manipulation of the argument wMaxPacketSize with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: Input: pegasus-notetaker - fix potential out-of-bounds access In the pegasus_notetaker driver, the pegasus_probe() function allocates the URB transfer buffer using the wMaxPacketSize value from the endpoint descriptor. An attacker can use a malicious USB descriptor to force the allocation of a very small buffer. Subsequently, if the device sends an interrupt packet with a specific pattern (e.g., where the first byte is 0x80 or 0x42), the pegasus_parse_packet() function parses the packet without checking the allocated buffer size. This leads to an out-of-bounds memory access.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2025-68217 since 12/16/2025. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 302766 (Ubuntu 24.04 LTS / 25.10 : Linux kernel vulnerabilities (USN-8094-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.302, 5.10.247, 5.15.197, 6.1.159, 6.6.118, 6.12.60 or 6.17.10 eliminates this vulnerability. Applying the patch c4e746651bd74c38f581e1cf31651119a94de8cd/36bc92b838ff72f62f2c17751a9013b29ead2513/015b719962696b793997e8deefac019f816aca77/084264e10e2ae8938a54355123ad977eb9df56d6/d344ea1baf1946c90f0cd6f9daeb5f3e0a0ca479/9ab67eff6d654e34ba6da07c64761aa87c2a3c26/763c3f4d2394a697d14af1335d3bb42f05c9409f/69aeb507312306f73495598a055293fa749d454e 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 (302766) and CERT Bund (WID-SEC-2025-2868). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source Linux Kernel

Productinfo

Type

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 302766
Nessus Name: Ubuntu 24.04 LTS / 25.10 : Linux kernel vulnerabilities (USN-8094-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.4.302/5.10.247/5.15.197/6.1.159/6.6.118/6.12.60/6.17.10
Patch: c4e746651bd74c38f581e1cf31651119a94de8cd/36bc92b838ff72f62f2c17751a9013b29ead2513/015b719962696b793997e8deefac019f816aca77/084264e10e2ae8938a54355123ad977eb9df56d6/d344ea1baf1946c90f0cd6f9daeb5f3e0a0ca479/9ab67eff6d654e34ba6da07c64761aa87c2a3c26/763c3f4d2394a697d14af1335d3bb42f05c9409f/69aeb507312306f73495598a055293fa749d454e

Timelineinfo

12/16/2025 Advisory disclosed
12/16/2025 +0 days CVE reserved
12/16/2025 +0 days VulDB entry created
03/18/2026 +92 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-68217 (🔒)
GCVE (CVE): GCVE-0-2025-68217
GCVE (VulDB): GCVE-100-336811
CERT Bund: WID-SEC-2025-2868 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 12/16/2025 16:10
Updated: 03/18/2026 06:10
Changes: 12/16/2025 16:10 (59), 01/20/2026 01:44 (7), 02/03/2026 08:45 (1), 02/21/2026 15:14 (1), 03/18/2026 06:10 (2)
Complete: 🔍
Cache ID: 216::103

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