PT-2025-40750 · Linux+1 · Linux Kernel+1
Published
2025-10-04
·
Updated
2025-12-04
·
CVE-2023-53587
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.3.0-rc1
Description
The Linux kernel contained a flaw in the ring buffer implementation where an interrupt request (IRQ) work could run after the buffer it operated on was destroyed. This could lead to a use-after-free condition, potentially resulting in a kernel crash or other unpredictable behavior. The issue occurred when data was written to the buffer immediately before its destruction, specifically in scenarios involving time-travel debugging (ARCH=um). The problem was resolved by adding appropriate synchronization to ensure the IRQ work completed before the buffer was destroyed.
Recommendations
Update to a version of the Linux kernel newer than 6.3.0-rc1.
Exploit
Fix
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Linux Kernel
Suse