PT-2026-27645 · Linux · Linux Kernel

Jann Horn · CVE-2026-23280 · Published 2026-01-01 · Updated 2026-05-22

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description A flaw exists in the Linux kernel's accel/amdxdna component where a calculation of the ubuf size can overflow. This overflow can lead to an undersized memory allocation and potential memory corruption. The issue is addressed by using check add overflow() helpers to validate the size calculation before memory is allocated.

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

Exploit

Related Identifiers

CVE-2026-23280

Affected Products

Linux Kernel

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23280.json · Exploit
• https://osv.dev/vulnerability/CVE-2026-23280 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-23280 · Security Note
• https://ubuntu.com/security/CVE-2026-23280 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23280 · Vendor Advisory
• https://git.kernel.org/stable/c/03808abb1d868aed7478a11a82e5bb4b3f1ca6d6 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-23280 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-23280 · Vendor Advisory
• https://git.kernel.org/stable/c/1500b31db94374a6669e73ce94d6f71cf8e85e06 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23280 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-23280 · Vendor Advisory
• https://git.kernel.org/stable/c/972bf4a23478fcb247b4f507d47a584bc8aea5bd · Patch
• https://git.kernel.org/linus/03808abb1d868aed7478a11a82e5bb4b3f1ca6d6 · Note
• https://docs.bell-sw.com/security/cves/CVE-2026-23280 · Note
• https://t.me/cveNotify/164482 · Telegram Post