Linux Kernel up to 6.5.2 dccp pskb_may_pull out-of-bounds

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.
3.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.5.2. It has been rated as critical. This vulnerability affects the function pskb_may_pull of the component dccp. This manipulation causes out-of-bounds. This vulnerability is handled as CVE-2023-53782. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.5.2. It has been declared as problematic. Affected by this vulnerability is the function pskb_may_pull of the component dccp. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: dccp: Fix out of bounds access in DCCP error handler There was a previous attempt to fix an out-of-bounds access in the DCCP error handlers, but that fix assumed that the error handlers only want to access the first 8 bytes of the DCCP header. Actually, they also look at the DCCP sequence number, which is stored beyond 8 bytes, so an explicit pskb_may_pull() is required.

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2023-53782 since 12/09/2025. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 278350 (Linux Distros Unpatched Vulnerability : CVE-2023-53782), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.14.326, 4.19.295, 5.4.257, 5.10.195, 5.15.132, 6.1.53, 6.4.16 or 6.5.3 eliminates this vulnerability. Applying the patch 3533e10272555c422a7d51ebc0ce8c483429f7f2/177212bf6dc1ff2d13d0409cddc5c9e81feec63d/7a7dd70cb954d3efa706a429687ded88c02496fa/4b8a938e329ae4eb54b73b0c87b5170607b038a8/6ecf09699eb1554299aa1e7fd13e9e80f656c2f9/f8a7f10a1dccf9868ff09342a73dce27501b86df/d8171411a661253e6271fa10b65b46daf1b6471c/ec620c34f5fa5d055f9f6136a387755db6157712/977ad86c2a1bcaf58f01ab98df5cc145083c489c 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 (278350) and CERT Bund (WID-SEC-2025-2765). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

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

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 278350
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-53782

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.14.326/4.19.295/5.4.257/5.10.195/5.15.132/6.1.53/6.4.16/6.5.3
Patch: 3533e10272555c422a7d51ebc0ce8c483429f7f2/177212bf6dc1ff2d13d0409cddc5c9e81feec63d/7a7dd70cb954d3efa706a429687ded88c02496fa/4b8a938e329ae4eb54b73b0c87b5170607b038a8/6ecf09699eb1554299aa1e7fd13e9e80f656c2f9/f8a7f10a1dccf9868ff09342a73dce27501b86df/d8171411a661253e6271fa10b65b46daf1b6471c/ec620c34f5fa5d055f9f6136a387755db6157712/977ad86c2a1bcaf58f01ab98df5cc145083c489c

Timelineinfo

12/09/2025 Advisory disclosed
12/09/2025 +0 days CVE reserved
12/09/2025 +0 days VulDB entry created
03/29/2026 +110 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53782 (🔒)
GCVE (CVE): GCVE-0-2023-53782
GCVE (VulDB): GCVE-100-335041
CERT Bund: WID-SEC-2025-2765 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 12/09/2025 11:14
Updated: 03/29/2026 08:36
Changes: 12/09/2025 11:14 (59), 12/12/2025 06:03 (2), 03/29/2026 08:36 (7)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best 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!