CVE-2024-26913 - Integer Underflow (Wrap or Wraparound)

Severity

78%

Complexity

18%

Confidentiality

98%

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix dcn35 8k30 Underflow/Corruption Issue [why] odm calculation is missing for pipe split policy determination and cause Underflow/Corruption issue. [how] Add the odm calculation.

CVSS 3.1 Base Score 7.8. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Demo Examples

Integer Underflow (Wrap or Wraparound)

CWE-191

The following example subtracts from a 32 bit signed integer.


               
}
return 0;

The example has an integer underflow. The value of i is already at the lowest negative value possible, so after subtracting 1, the new value of i is 2147483647.

Overview

First reported 1 month ago

2024-04-17 16:15:00

Last updated 2 weeks ago

2024-04-29 19:29:00

Affected Software

Linux Kernel

References

https://git.kernel.org/stable/c/cdbe0be8874c63bca85b8c38e5b1eecbdd18df31

https://git.kernel.org/stable/c/faf51b201bc42adf500945732abb6220c707d6f3

https://git.kernel.org/stable/c/cdbe0be8874c63bca85b8c38e5b1eecbdd18df31

Patch

https://git.kernel.org/stable/c/faf51b201bc42adf500945732abb6220c707d6f3

Patch

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