CVE-2023-3338
Crash due to a null pointer dereference in the dn_nsp_send function
Severity Score
6.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
2
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track*
*SSVC
Descriptions
A null pointer dereference flaw was found in the Linux kernel's DECnet networking protocol. This issue could allow a remote user to crash the system.
It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service. Daniël Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD processors utilising speculative execution and branch prediction may allow unauthorised memory reads via a speculative side-channel attack. A local attacker could use this to expose sensitive information, including kernel memory.
*Credits:
Red Hat would like to thank Davide Ornaghi (Betrusted Srl) for reporting this issue.
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track*
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-06-20 CVE Reserved
- 2023-06-30 CVE Published
- 2023-07-11 First Exploit
- 2025-03-05 CVE Updated
- 2025-05-19 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-476: NULL Pointer Dereference
CAPEC
References (8)
| URL | Tag | Source |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2023-3338 | Third Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2218618 | Issue Tracking | |
| https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html | Mailing List |
|
| https://security.netapp.com/advisory/ntap-20230824-0005 | Third Party Advisory |
|
| https://www.debian.org/security/2023/dsa-5480 | Third Party Advisory |
|
| URL | Date | SRC |
|---|---|---|
| https://github.com/TurtleARM/CVE-2023-3338-DECPwn | 2023-07-11 | |
| https://seclists.org/oss-sec/2023/q2/276 | 2025-03-05 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.5 Search vendor "Linux" for product "Linux Kernel" and version " < 6.5" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Active Iq Unified Manager Search vendor "Netapp" for product "Active Iq Unified Manager" | - | vsphere |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0" | - |
Affected
| ||||||