Kernel memory exhaustion via leaked DAMON targets
Published Jan 15, 2025 · Updated May 11, 2026
Memory leaks in DAMON in the Linux kernel allow local users to consume kernel memory through the privileged sysfs control interface. damon_commit_targets() allocates new damon_target objects but neither links them into the context nor releases them when damon_commit_target() fails, so every newly added target leaks. Only root-permitted DAMON sysfs control reaches this path; DAMON_RECLAIM, DAMON_LRU_SORT, and other dedicated core API users are unaffected.
Summary
What happened
Memory leaks in DAMON in the Linux kernel allow local users to consume kernel memory through the privileged sysfs control interface. damon_commit_targets() allocates new damon_target objects but neither links them into the context nor releases them when damon_commit_target() fails, so every newly added target leaks. Only root-permitted DAMON sysfs control reaches this path; DAMON_RECLAIM, DAMON_LRU_SORT, and other dedicated core API users are unaffected.
The record
- CVE
- CVE-2024-57886
- Published
- Jan 15, 2025
- Updated
- May 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-401, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 15, 2025CVE publishedPublication date reported by the CVE source.
- May 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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- Affected versionversion=6.11
- Affected versionversion=9cb3d0b9dfce6a3258d91e6d69e418d0b4cce46a <3647932d0b3e609c762c55e8f9fe10a09776e0a7
- Affected versionversion=9cb3d0b9dfce6a3258d91e6d69e418d0b4cce46a <8debfc5b1aa569d3d2ac836af2553da037611c61
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What is affected?
Published CVSS scores
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Attacks
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Your stack
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