Local service interruption via IMA memory leak
Published Oct 22, 2025 · Updated Oct 22, 2025
Memory leak in the Linux kernel IMA subsystem allows local users to cause a service interrupt by repeatedly triggering failed digest calculation. The __ima_inode_hash() error path leaves iint->ima_hash allocated when ima_collect_measurement() fails for a reason other than unavailable memory. Exploitation requires low-privileged local access and repeated access to files whose digests cannot be calculated, consuming kernel memory until service is interrupted.
Summary
What happened
Memory leak in the Linux kernel IMA subsystem allows local users to cause a service interrupt by repeatedly triggering failed digest calculation. The __ima_inode_hash() error path leaves iint->ima_hash allocated when ima_collect_measurement() fails for a reason other than unavailable memory. Exploitation requires low-privileged local access and repeated access to files whose digests cannot be calculated, consuming kernel memory until service is interrupted.
The record
- CVE
- CVE-2022-50577
- Published
- Oct 22, 2025
- Updated
- Oct 22, 2025
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 22, 2025CVE publishedPublication date reported by the CVE source.
- Oct 22, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=280fe8367b0dc45b6ac5e04fad03e16e99540c0c <8c1d6a050a0f16e0a9d32eaf53b965c77279c6f8
- Affected versionversion=280fe8367b0dc45b6ac5e04fad03e16e99540c0c <c4df8cb38f139ed9f4296868c0a6f15a26e8c491
- Affected versionversion=280fe8367b0dc45b6ac5e04fad03e16e99540c0c <f375bcf69f58fd0744c9dfd1b6b891a27301d67b
- Affected versionversion=5.18
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Your stack
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Your stack
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