CVE-2023-53986
kernel: Linux kernel: Denial of Service due to improper Read-ahead cache initialization on BCM6358
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 24, 2025
Updated · August 20, 2026
Description
A flaw was found in the Linux kernel. When booting from the second thread (TP1) on Broadcom BCM6358 systems, the bootloader (CFE) fails to properly initialize the Read-ahead cache (RAC). An attempt to flush this improperly initialized cache can corrupt the instruction stream, leading to a kernel panic and a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
CWE-824 · Access of Uninitialized Pointer