Vulnerability · Published Jun 30, 2023 · Assigned by redhat
CVE-2023-3338Crash due to a null pointer dereference in the dn_nsp_send function
Medium 6.5
In plain English
A medium-severity null pointer dereference in Fedora from Fedora. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 8.5% (higher than 95% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)8.5%top 5.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling1Public PoC
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 6.1.4-1 | DEBIAN-CVE-2023-3338 |
| Debian:13 | linux | 6.1.4-1 | DEBIAN-CVE-2023-3338 |
| Debian:14 | linux | 6.1.4-1 | DEBIAN-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux | 5.15.0-86.96 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux | 5.15.0-86.96 | USN-6416-1 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1047.52 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1047.52 | USN-6416-1 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1049.56 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1049.56 | USN-6416-1 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1049.56.1 | USN-6416-1 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1049.56.1 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1044.52 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1044.52 | USN-6416-1 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1044.49 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1044.49 | USN-6416-1 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1030.35 | USN-6416-1 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1030.35 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1040.43 | USN-6416-1 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1040.43 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1043.49 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1043.49 | USN-6445-1 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1044.49 | USN-6416-1 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1044.49 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-86.95 | USN-6416-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-86.95 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1037.37 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1037.37 | USN-6416-1 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1018.18 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1005.5 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1045.51 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1045.51 | USN-6416-1 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1040.43 | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1040.43 | USN-6416-3 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2023-3338 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1025.29 | UBUNTU-CVE-2023-3338 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | kernel | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Fedora | Fedora | see references |
Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- https://access.redhat.com/security/cve/CVE-2023-3338 vdb-entry, x_refsource_REDHAT
- RHBZ#2218618 issue-tracking, x_refsource_REDHAT
- https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
- https://seclists.org/oss-sec/2023/q2/276
- https://security.netapp.com/advisory/ntap-20230824-0005/
- https://www.debian.org/security/2023/dsa-5480
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html