CVE-2024-41032: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: mm: vmalloc: check if a hash-index is in cpu_possible_mask The problem is that there are systems where cpu_possible_mask has gaps between set CPUs, for example SPARC. In this scenario addr_to_vb_xa() hash function can return an index which accesses to not-possible and not setup CPU area using per_cpu() macro. This results in an oops on SPARC. A per-cpu vmap_block_queue is also used as hash table, incorrectly assuming the cpu_possible_mask has no gaps. Fix it by adjusting an index to a next possible CPU.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.4 — 6.6.41
linux	linux_kernel	6.7 — 6.9.10
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/28acd531c9a365dac01b32e6bc54aed8c1429bcb https://git.kernel.org/stable/c/47f9b6e49b422392fb0e348a65eb925103ba1882 https://git.kernel.org/stable/c/a34acf30b19bc4ee3ba2f1082756ea2604c19138 https://git.kernel.org/stable/c/28acd531c9a365dac01b32e6bc54aed8c1429bcb https://git.kernel.org/stable/c/47f9b6e49b422392fb0e348a65eb925103ba1882 https://git.kernel.org/stable/c/a34acf30b19bc4ee3ba2f1082756ea2604c19138

Frequently Asked Questions

What is CVE-2024-41032? +

In the Linux kernel, the following vulnerability has been resolved: mm: vmalloc: check if a hash-index is in cpu_possible_mask The problem is that there are systems where cpu_possible_mask has gaps between set CPUs, for example SPARC. In this scenario addr_to_vb_xa() hash function can return an index which accesses to not-possible and not setup CPU area using per_cpu() macro. This results in an oops on SPARC. A per-cpu vmap_block_queue is also used as hash table, incorrectly assuming the cpu_possible_mask has no gaps. Fix it by adjusting an index to a next possible CPU. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-41032? +

CVE-2024-41032 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-41032? +

CVE-2024-41032 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-41032? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-41032