Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: mm/damon/stat: fix memory leak on damon_start() failure in damon_stat_start()… (CVE-2026-46087)
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.
AI Analysis
Technical Summary
The vulnerability in the Linux kernel's mm/damon/stat component involves improper cleanup on failure of damon_start() within damon_stat_start(). Specifically, if damon_start() fails, the DAMON context allocated by damon_stat_build_ctx() is not destroyed, and the global pointer damon_stat_context is not reset. This results in a memory leak (CWE-401) because the stale pointer is overwritten on subsequent enable attempts, making the previously allocated memory unreachable and leaked.
Potential Impact
The vulnerability causes a memory leak in the Linux kernel, which can degrade system stability or availability over time due to unreleased memory resources. There is no impact on confidentiality or integrity. The CVSS vector indicates local attack complexity with low privileges required and no user interaction, but the impact is limited to availability.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to destroy the DAMON context and reset the global pointer when damon_start() fails, preventing the memory leak. Since no patch links are provided here, users should consult the official Linux kernel advisories or source repositories for the relevant fixed versions and apply updates accordingly.
Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: mm/damon/stat: fix memory leak on damon_start() failure in damon_stat_start()… (CVE-2026-46087)
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.
CVSS v3.1
Score 5.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in the Linux kernel's mm/damon/stat component involves improper cleanup on failure of damon_start() within damon_stat_start(). Specifically, if damon_start() fails, the DAMON context allocated by damon_stat_build_ctx() is not destroyed, and the global pointer damon_stat_context is not reset. This results in a memory leak (CWE-401) because the stale pointer is overwritten on subsequent enable attempts, making the previously allocated memory unreachable and leaked.
Potential Impact
The vulnerability causes a memory leak in the Linux kernel, which can degrade system stability or availability over time due to unreleased memory resources. There is no impact on confidentiality or integrity. The CVSS vector indicates local attack complexity with low privileges required and no user interaction, but the impact is limited to availability.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to destroy the DAMON context and reset the global pointer when damon_start() fails, preventing the memory leak. Since no patch links are provided here, users should consult the official Linux kernel advisories or source repositories for the relevant fixed versions and apply updates accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-6f33-3frm-64p4
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-46087"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a3ef7ee27e9c79719034a9d
Added to database: 06/26/2026, 22:06:38 UTC
Last enriched: 06/26/2026, 22:48:54 UTC
Last updated: 07/31/2026, 19:30:22 UTC
Views: 6
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