CVE-2022-48806

Medium

In the Linux kernel, the following vulnerability has been resolved: eeprom: ee1004: limit i2c reads to I2C_SMBUS_BLOCK_MAX Commit effa453168a7 ("i2c: i801: Don't silently correct invalid transfer size") revealed that ee1004_eeprom_read() did not properly limit how many bytes to read at once. In particular, i2c_smbus_read_i2c_block_data_or_emulated() takes the length to read as an u8. If count == 256 after taking into account the offset and page boundary, the cast to u8 overflows. And this is common when user space tries to read the entire EEPROM at once. To fix it, limit each read to I2C_SMBUS_BLOCK_MAX (32) bytes, already the maximum length i2c_smbus_read_i2c_block_data_or_emulated() allows.

Package Linux Kernel
Published 2024-07-16
Last modified 2025-10-03
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-190

CVE-2022-48806 is a Integer Overflow vulnerability

What is Integer Overflow?

The product performs a calculation that can produce an integer overflow, leading to unexpected values. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.4.300, 4.9.298, 4.14.263, 4.19.226, 5.4.174, 5.10.94, 5.15.17, 5.16.3 and later are affected. Fixed in 4.5, 4.10, 4.15, 4.20, 5.4.180, 5.10.101, 5.15.24, 5.16.10 and their respective stable series.

Affected from
≥ 4.4.300 ≥ 4.9.298 ≥ 4.14.263 ≥ 4.19.226 ≥ 5.4.174 ≥ 5.10.94 ≥ 5.15.17 ≥ 5.16.3
Fixed in
✓ 4.5 4.5.x ✓ 4.10 4.10.x ✓ 4.15 4.15.x ✓ 4.20 4.20.x ✓ 5.4.180 5.4.x ✓ 5.10.101 5.10.x ✓ 5.15.24 5.15.x ✓ 5.16.10 5.16.x

References

5 total

Frequently asked questions

  • What is CVE-2022-48806?

    CVE-2022-48806 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Integer Overflow flaw (CWE-190) . It affects Linux kernel versions from 4.4.300 onward and has been patched in 4.5, 4.10, 4.15 and others. CVE-2022-48806 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2022-48806?

    CVE-2022-48806 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2022-48806?

    Yes. CVE-2022-48806 has been patched. Fixed versions include 4.5, 4.10, 4.15 and others. If you are running Linux kernel 4.4.300 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2022-48806 actively exploited?

    No. CVE-2022-48806 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Back to
All CVEs
View on
NVD / NIST