Kernel memory leak via failed SAR probing
Published Sep 11, 2026 · Updated Sep 11, 2026
A memory leak in the int1092 SAR driver in Linux 5.15 and affected revisions leaves kernel allocations unreleased after failed probing. parse_package() allocates device_mode_info while sar_probe() omits that allocation from several cleanup paths reached after later initialization errors. The public record identifies no attacker-controlled trigger and demonstrates no resulting hang, crash, or other service interruption.
Summary
What happened
A memory leak in the int1092 SAR driver in Linux 5.15 and affected revisions leaves kernel allocations unreleased after failed probing. parse_package() allocates device_mode_info while sar_probe() omits that allocation from several cleanup paths reached after later initialization errors. The public record identifies no attacker-controlled trigger and demonstrates no resulting hang, crash, or other service interruption.
The record
- CVE
- CVE-2026-89437
- Published
- Sep 11, 2026
- Updated
- Sep 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 11, 2026CVE publishedPublication date reported by the CVE source.
- Sep 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=5.15
- Affected versionversion=dcfbd31ef4bcf6ceb373911faa4a5299e0547702 <30c906cff490c3601ee9ff110fe8115fabe75fd4
- Affected versionversion=dcfbd31ef4bcf6ceb373911faa4a5299e0547702 <582b82e573a059be9319bb16b84c45d0ef66f471
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
No sourced classifications are available.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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