What’s Vulnerable › Vulnerabilities

CVE-2026-46087: mm/damon/stat: fix memory leak on damon_start() failure in damon_stat_start()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-27 · updated 2026-06-25
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: mm/damon/stat: fix memory leak on damon_start() failure in damon_stat_start() Destroy the DAMON context and reset the global pointer when damon_start() fails. Otherwise, the context allocated by damon_stat_build_ctx() is leaked, and the stale damon_stat_context pointer will be overwritten on the next enable attempt, making the old allocation permanently unreachable.

Affected products

• Linux kernel: from 6.17 before 6.18.27; from 6.19 before 7.0.4 — fixed in 6.18.27, 7.0.4

How to fix

Upgrade to a fixed version: Linux kernel 6.18.27, 7.0.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/50bc1d7e0f3bb6932c8dc5da0907eead0790176b
• https://git.kernel.org/stable/c/8a62c58411cbd748d7aeab0e5b0963e33ff47a7a
• https://git.kernel.org/stable/c/e04ed278d25bf15769800bf6e35c6737f137186f

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