PT-2026-27663 · Linux · Linux Kernel

Published 2026-01-01 · Updated 2026-05-29 · CVE-2026-23298

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 ucan driver where the system can hang due to an infinite loop. This occurs when a defective ucan device receives a message with the message length field set to 0, causing the ucan read bulk callback() function to loop indefinitely.

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

Exploit

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

CVE-2026-23298

ECHO-667A-14DA-50A5

OPENSUSE-SU-2026:20826-1

SUSE-SU-2026:21841-1

SUSE-SU-2026:21845-1

SUSE-SU-2026:21860-1

SUSE-SU-2026:21876-1

SUSE-SU-2026:21877-1

SUSE-SU-2026:21916-1

SUSE-SU-2026:21919-1

SUSE-SU-2026:2217-1

SUSE-SU-2026:2238-1

Affected Products

Linux Kernel

References · 26

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23298.json · Exploit
• https://git.kernel.org/stable/c/e7bb6e0606b5f233531aaaad9542d69fbb792115 · Patch
• https://git.kernel.org/stable/c/aa9e0a7fe5efc2f74327fd37d828e9a51d9ff588 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-23298 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23298 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23298 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-23298 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2026-23298 · Vendor Advisory
• https://git.kernel.org/stable/c/c7bc62be6c1a60bb21301692009590b1ffda91d9 · Patch
• https://cve.org/CVERecord?id=CVE-2026-23298 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-23298 · Vendor Advisory
• https://git.kernel.org/stable/c/ca07d3c6eef14d34e6fdeefe55058db045be29dc · Patch
• https://git.kernel.org/stable/c/ab6f075492d37368b4c7b0df7f7fdc2b666887fc · Patch
• https://git.kernel.org/stable/c/13b646eec3ba1131180803f5aaf1fee23540ad8f · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23298 · Vendor Advisory