Service interruption via interpolation index underflow
Published Feb 26, 2025 · Updated May 11, 2026
Out-of-bounds read in Linux kernel 5.17 through 5.18.12 allows local users to interrupt service via power-supply table inputs. The power_supply_ocv2cap_simple function can set its upper index to -1 when an OCV exceeds the first table entry, causing a read before the table; power_supply_temp2resist_simple also collapses interpolation endpoints and returns an incorrect resistance. SUSE assesses local low-privileged access as the gate, while the published kernel record does not identify how a user controls the relevant power-supply readings.
Summary
What happened
Out-of-bounds read in Linux kernel 5.17 through 5.18.12 allows local users to interrupt service via power-supply table inputs. The power_supply_ocv2cap_simple function can set its upper index to -1 when an OCV exceeds the first table entry, causing a read before the table; power_supply_temp2resist_simple also collapses interpolation endpoints and returns an incorrect resistance. SUSE assesses local low-privileged access as the gate, while the published kernel record does not identify how a user controls the relevant power-supply readings.
The record
- CVE
- CVE-2022-49612
- Published
- Feb 26, 2025
- Updated
- May 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-787, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 26, 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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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=5.17
- Affected versionversion=a4585ba2050f460f749bbaf2b67bd56c41e30283 <093d27bb6f2d1963f927ef59c9a2d37059175426
- Affected versionversion=a4585ba2050f460f749bbaf2b67bd56c41e30283 <a762cee5d933fe4e2e1b773d60fc74fb8248d8c4
What conditions does exploitation require?
What is affected?
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.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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