CVE-2026-23020 — NULL Pointer Dereference in Linux

CWE-476 — NULL Pointer Dereference23 documents7 sources
Severity
5.5MEDIUMNVD
OSV7.8
EPSS
0.0%
top 95.67%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
LinuxLinux KernelDebian Linux+1 more
Timeline
PublishedJan 31
Latest updateApr 13

Description

In the Linux kernel, the following vulnerability has been resolved: net: 3com: 3c59x: fix possible null dereference in vortex_probe1() pdev can be null and free_ring: can be called in 1297 with a null pdev.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages7 packages

▶Linuxlinux/linux_kernel4.17.0 — 5.10.248+5
▶NVDlinux/linux_kernel4.16.12 — 4.17+8
▶Debianlinux/linux_kernel< 5.10.249-1+3
▶Ubuntulinux/linux_kernel< 5.15.0-173.183
▶CVEListV5linux/linux55c82617c3e82210b7471e9334e8fc5df6a9961f — 053ac9e37eee435e999277c0f1ef890dad6064bf+8

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

10
OSV
linux-raspi vulnerabilities↗2026-04-01
▶
OSV
linux-intel-iot-realtime vulnerabilities↗2026-03-23
▶
OSV
linux-nvidia-tegra-igx vulnerabilities↗2026-03-23
▶
OSV
linux-realtime vulnerabilities↗2026-03-17
▶
OSV
linux-aws-5.15, linux-gcp-5.15, linux-gke, linux-hwe-5.15, linux-intel-iotg-5.15, linux-lowlatency-hwe-5.15, linux-oracle-5.15 vulnerabilities↗2026-03-17
▶

📋Vendor Advisories

11
Ubuntu
Linux kernel (Azure) vulnerabilities↗2026-04-13
▶
Ubuntu
Linux kernel (Azure FIPS) vulnerabilities↗2026-04-09
▶
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities↗2026-04-01
▶
Ubuntu
Linux kernel (Intel IoTG Real-time) vulnerabilities↗2026-03-23
▶
Ubuntu
Linux kernel (NVIDIA Tegra IGX) vulnerabilities↗2026-03-23
▶

🕵️Threat Intelligence

1
Wiz
CVE-2026-23020 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶
CVE-2026-23020 — NULL Pointer Dereference in Linux | cvebase