PT-2026-37389 · Linux · Linux Kernel

Published 2026-05-06 · Updated 2026-06-05 · CVE-2026-43079

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 An array overflow can occur in the uncore pci pmu register() function when the discovery table is parsed even if all CPUs in the associated die are offline. This issue may be triggered if NUMA (Non-Uniform Memory Access, a memory design used in multiprocessing) is disabled and the system boots with fewer CPUs than the number of CPUs in die 0. The overflow occurs at the operation pmu->boxes[die] = box.

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

Related Identifiers

CVE-2026-43079

OESA-2026-2311

OESA-2026-2581

Affected Products

Linux Kernel

References · 140

• https://nvd.nist.gov/vuln/detail/CVE-2025-23145 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31398 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-71239 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31628 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43079 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31429 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31771 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23244 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31773 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43036 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43284 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31521 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-71112 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43040 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43079 · Vendor Advisory