CVE-2023-52988
Description
A vulnerability was found in the Linux kernel's ALSA subsystem in the add_secret_dac_path() function, where improper array handling can lead to out-of-bounds access. This occurs if the return value of the call to snd_hda_get_connections() returns an error code (a negative number), which is stored in the variable nums that is then used as the upper bound of a for loop used to access the conn structure. This issue could lead to undefined behavior or a memory crash due to invalid memory access.
Statement
Red Hat rated this vulnerability with a MODERATE impact because an attacker would need access to load/manipulate ALSA codec data, which requires elevated privileges.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.7 | 7.8 | 7.8 |
| Attack Vector | Local | Local | Local |
| Attack Complexity | Low | Low | Low |
| Privileges Required | High | Low | Low |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | High | High | High |
| Integrity Impact | High | High | High |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Red Hat CVSS v3 Score Explanation
The successful exploitation of this vulnerability requires ALSA codec data to be loaded, which increases the privileges required to high, hence the CVSS has been marked as such.
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