PT-2026-36432 · Linux · Linux Kernel

Published 2026-03-30 · Updated 2026-05-06 · CVE-2026-43015

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 use-after-free issue exists in the Linux kernel's macb network driver during PCI glue driver removal. The platform device unregister() function may attempt to use registered clocks during a runtime resume callback after they have been freed. This occurs specifically within the clk prepare() function called by macb runtime resume(). KASAN (Kernel Address Sanitizer), a dynamic memory error detector, identified this memory corruption during the removal of the PCI device.

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

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2026-06511

CVE-2026-43015

ECHO-1391-ADFD-D9DD

Affected Products

Linux Kernel

References · 20

• https://git.kernel.org/stable/c/3496fb9e66f79d4def3bb7ec7563e3eaa33a688f · Patch
• https://git.kernel.org/stable/c/b3f799cdf830df1782ae463cf15ace35015be99e · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43015 · Vendor Advisory
• https://git.kernel.org/stable/c/ce8fe5287b87e24e225c342f3b0ec04f0b3680fe · Patch
• https://git.kernel.org/stable/c/16ab4c0e2b15df5d33bfcb9ea8e4441b85dd4a57 · Patch
• https://git.kernel.org/stable/c/bf64cae913cdd4821f13d5d1d68900c0891bef69 · Patch
• https://bdu.fstec.ru/vul/2026-06511 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43015 · Security Note
• https://git.kernel.org/stable/c/f310a836da90d0f0321b14d446c071af63f9ee4c · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-43015 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43015 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-43015 · Vendor Advisory
• https://git.kernel.org/stable/c/67f70841a175fa3469119f52d77a3662c07507a2 · Patch
• https://git.kernel.org/stable/c/2d96204e4184d6f7dd2f93c6f218fd0c1f55e9ae · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43015 · Vendor Advisory