In the Linux kernel, the following vulnerability has been resolved:
lib: cpu_rmap: Avoid use after free on rmap->obj array entries
When calling irq_set_affinity_notifier() with NULL at the notify
argument, it will cause freeing of the glue pointer in the
corresponding array entry but will leave the pointer in the array. A
subsequent call to free_irq_cpu_rmap() will try to free this entry again
leading to possible use after free.
Fix that by setting NULL to the array entry and checking that we have
non-zero at the array entry when iterating over the array in
free_irq_cpu_rmap().
The current code does not suffer from this since there are no cases
where irq_set_affinity_notifier(irq, NULL) (note the NULL passed for the
notify arg) is called, followed by a call to free_irq_cpu_rmap() so we
don't hit and issue. Subsequent patches in this series excersize this
flow, hence the required fix.
References
Configurations
Configuration 1 (hide)
|
History
20 Jan 2026, 16:35
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/4e0473f1060aa49621d40a113afde24818101d37 - Patch | |
| References | () https://git.kernel.org/stable/c/67bca5f1d644f4e79b694abd8052a177de81c37f - Patch | |
| References | () https://git.kernel.org/stable/c/981f339d2905b6a92ef59358158b326493aecac5 - Patch | |
| References | () https://git.kernel.org/stable/c/c6ed54dd90698dc0744d669524cc1c122ded8a16 - Patch | |
| References | () https://git.kernel.org/stable/c/c9115f49cf260d24d8b5f2d9a4b63cb31a627bb4 - Patch | |
| References | () https://git.kernel.org/stable/c/cc2d2b3dbfb0ba57bc027fb7e1121250c50e4000 - Patch | |
| References | () https://git.kernel.org/stable/c/d1308bd0b24cb1d78fa2747d5fa3e055cc628a48 - Patch | |
| References | () https://git.kernel.org/stable/c/f748e15253833b771acbede14ea98f50831ac289 - Patch | |
| First Time |
Linux
Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| CPE | cpe:2.3:o:linux:linux_kernel:3.8:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:3.8:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:3.8:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:3.8:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:3.8:rc7:*:*:*:*:*:* |
|
| CWE | CWE-416 |
01 Oct 2025, 12:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-10-01 12:15
Updated : 2026-01-20 16:35
NVD link : CVE-2023-53484
Mitre link : CVE-2023-53484
CVE.ORG link : CVE-2023-53484
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free