PT-2026-39077 · Linux · Linux Kernel

CVE-2026-43416 · Published 2026-05-08 · Updated 2026-05-29

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 powerpc architecture's perf subsystem where the kernel fails to verify if current->mm is active before attempting to retrieve the user callchain. This can lead to a kernel NULL pointer dereference and subsequent kernel panic if the memory descriptor (mm) has already been released. This issue was observed when running profiling BPF programs, specifically within the perf callchain user 64() function.

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-2026-43416

OESA-2026-2493

OESA-2026-2494

OESA-2026-2495

Affected Products

Linux Kernel

References · 52

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43416.json · Exploit
• https://osv.dev/vulnerability/BELL-CVE-2026-43416 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43134 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23374 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23296 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43470 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43483 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43057 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43147 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2493 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43170 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2495 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43492 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23352 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23360 · Security Note