PT-2026-27650 · Linux · Linux Kernel

Published 2026-01-01 · Updated 2026-05-22 · CVE-2026-23285

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the Linux kernel where a null-pointer dereference can occur in the drbd request endio() function. This happens when READ COMPLETED WITH ERROR is passed to req mod() with a NULL peer device. The READ COMPLETED WITH ERROR handler then attempts to dereference this NULL peer device within the drbd set out of sync() function, leading to the dereference.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-23285

Affected Products

Linux Kernel

References · 21

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23285.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2026-23285 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-23285 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23285 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23285 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23285 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2026-23285 · Vendor Advisory
• https://git.kernel.org/stable/c/4e8935053ba389ae8d6685c10854d8021931bd89 · Patch
• https://cve.org/CVERecord?id=CVE-2026-23285 · Security Note
• https://git.kernel.org/stable/c/0d195d3b205ca90db30d70d09d7bb6909aac178f · Patch
• https://git.kernel.org/stable/c/1e906c08594c8f9a6a524f38ede2c4e051196106 · Patch
• https://git.kernel.org/stable/c/6f1d1614f841d91a4169db65812ffd1271735b42 · Patch
• https://osv.dev/vulnerability/CVE-2026-23285 · Vendor Advisory
• https://git.kernel.org/stable/c/91df51d2df0ca4fd3281f73626341563d64a98a5 · Patch
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-23285 · Vendor Advisory