Local service interruption via EEPROM read overflow
Published Jul 16, 2024 · Updated May 23, 2026
Integer overflow in the Linux ee1004 EEPROM driver allows local users to interrupt service by reading an entire EEPROM at once. The ee1004_eeprom_read() path passes a 256-byte count to i2c_smbus_read_i2c_block_data_or_emulated(), whose u8 length conversion wraps the value to zero instead of enforcing the 32-byte block limit. Reachability requires an enabled ee1004 driver and a compatible DDR4 SPD EEPROM; the public record does not identify the resulting failure as a hang, crash, or reboot.
Summary
What happened
Integer overflow in the Linux ee1004 EEPROM driver allows local users to interrupt service by reading an entire EEPROM at once. The ee1004_eeprom_read() path passes a 256-byte count to i2c_smbus_read_i2c_block_data_or_emulated(), whose u8 length conversion wraps the value to zero instead of enforcing the 32-byte block limit. Reachability requires an enabled ee1004 driver and a compatible DDR4 SPD EEPROM; the public record does not identify the resulting failure as a hang, crash, or reboot.
The record
- CVE
- CVE-2022-48806
- Published
- Jul 16, 2024
- Updated
- May 23, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-190, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 16, 2024CVE publishedPublication date reported by the CVE source.
- May 23, 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?
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- Affected versionversion=07d9beb6e3c2e852e884113d6803ea4b3643ae38 <9443ddeb3754e9e382a396b50adc1961301713ce
- Affected versionversion=202d0e22fe512df0f1cb6253d40ce1058e373247
- Affected versionversion=25714ad6bf5e98025579fa4c08ff2041a663910c <a37960df7eac3cc8094bd1ab84864e9e32c91345
- Affected versionversion=4.14.263 <4.15
- Affected versionversion=4.19.226 <4.20
- Affected versionversion=4.4.300 <4.5
- Affected versionversion=4.9.298 <4.10
- Affected versionversion=5.10.94 <5.10.101
- Affected versionversion=5.15.17 <5.15.24
- Affected versionversion=5.16.3 <5.16.10
- Affected versionversion=5.4.174 <5.4.180
- Affected versionversion=7414af7bdad9a9cddb3a765ca98ea207048618c5
- Affected versionversion=74650c34f93044d3ab441235f161f9e1e761e96b
- Affected versionversion=a126a8c3dd51519513141b4fc94fd4813bca2c0f
- Affected versionversion=aca56c298e2a6d20ab6308e203a8d37f2a7759d3 <3937c35493ee2847aaefcfa5460e94b7443eef49
- Affected versionversion=be9313f755a7bfa02230b15731d07074d5255ecb <9a5f471ae380f9fcb9756d453c12ca1f8595a93c
- Affected versionversion=effa453168a7eeb8a562ff4edc1dbf9067360a61 <c0689e46be23160d925dca95dfc411f1a0462708
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Public exploit references
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Technologies
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