Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 062eacf57ad91b5c272f89dc964fd6dd9715ea7d before 28acd531c9a365dac01b32e6bc54aed8c1429bcb; affected 062eacf57ad91b5c272f89dc964fd6dd9715ea7d before 47f9b6e49b422392fb0e348a65eb925103ba1882; affected 062eacf57ad91b5c272f89dc964fd6dd9715ea7d before a34acf30b19bc4ee3ba2f1082756ea2604c19138 |
| Linux / Linux | affected 6.4; unaffected 0 before 6.4; unaffected 6.6.41 through 6.6.*; unaffected 6.9.10 through 6.9.*; unaffected 6.10 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/28acd531c9a365dac01b32e6bc54aed8c1429bcb
- https://git.kernel.org/stable/c/47f9b6e49b422392fb0e348a65eb925103ba1882
- https://git.kernel.org/stable/c/a34acf30b19bc4ee3ba2f1082756ea2604c19138
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.