CVE-2023-53254

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Source
https://cve.org/CVERecord?id=CVE-2023-53254
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53254.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-53254
Downstream
Related
Published
2025-09-15T14:46:24.670Z
Modified
2026-03-12T03:28:10.046985Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
Summary
cacheinfo: Fix shared_cpu_map to handle shared caches at different levels
Details

In the Linux kernel, the following vulnerability has been resolved:

cacheinfo: Fix sharedcpumap to handle shared caches at different levels

The cacheinfo sets up the sharedcpumap by checking whether the caches with the same index are shared between CPUs. However, this will trigger slab-out-of-bounds access if the CPUs do not have the same cache hierarchy. Another problem is the mismatched sharedcpumap when the shared cache does not have the same index between CPUs.

CPU0 I D L3 index 0 1 2 x ^ ^ ^ ^ index 0 1 2 3 CPU1 I D L2 L3

This patch checks each cache is shared with all caches on other CPUs.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53254.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
246246cbde5e840012f853e27630ebb59f409486
Fixed
2f588d0345d69a35e451077afed428fd057a5e34
Fixed
dea49f2993f57d8a2df2cacb0bf649ef49b28879
Fixed
198102c9103fc78d8478495971947af77edb05c1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53254.json"