CVE-2022-48806

MEDIUM EPSS 19.8%
Published Jul 16, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jul 16, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
19.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-190 Integer Overflow or Wraparound Numeric Error

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥4.4.300  –  <4.5
linuxlinux_kernel*≥4.9.298  –  <4.10
linuxlinux_kernel*≥4.14.263  –  <4.15
linuxlinux_kernel*≥4.19.226  –  <4.20
linuxlinux_kernel*≥5.4.174  –  <5.4.180
linuxlinux_kernel*≥5.10.94  –  <5.10.101
linuxlinux_kernel*≥5.15.17  –  <5.15.24
linuxlinux_kernel*≥5.16.3  –  <5.16.10
linuxlinux_kernel5.17any
linuxlinux_kernel5.17any
linuxlinux_kernel5.17any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/3937c35493ee2847aaefcfa5460e94b7443eef49
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9443ddeb3754e9e382a396b50adc1961301713ce
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9a5f471ae380f9fcb9756d453c12ca1f8595a93c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a37960df7eac3cc8094bd1ab84864e9e32c91345
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c0689e46be23160d925dca95dfc411f1a0462708
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3937c35493ee2847aaefcfa5460e94b7443eef49
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9443ddeb3754e9e382a396b50adc1961301713ce
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9a5f471ae380f9fcb9756d453c12ca1f8595a93c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a37960df7eac3cc8094bd1ab84864e9e32c91345
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c0689e46be23160d925dca95dfc411f1a0462708
    Patch