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.
Does this matter?
Lower severity and a low EPSS score (0.30%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.30% probability · 23th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/28acd531c9a365dac01b32e6bc54aed8c1429bcbPatch
- https://git.kernel.org/stable/c/47f9b6e49b422392fb0e348a65eb925103ba1882Patch
- https://git.kernel.org/stable/c/a34acf30b19bc4ee3ba2f1082756ea2604c19138Patch
- https://git.kernel.org/stable/c/28acd531c9a365dac01b32e6bc54aed8c1429bcbPatch
- https://git.kernel.org/stable/c/47f9b6e49b422392fb0e348a65eb925103ba1882Patch
- https://git.kernel.org/stable/c/a34acf30b19bc4ee3ba2f1082756ea2604c19138Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.