Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: enetc: Fix illegal access when reading affinity_hint irq_set_affinity_hit() stores a reference to the cpumask_t parameter in the irq descriptor, and that reference can be accessed later from irq_affinity_hint_proc_show(). Since the cpu_mask parameter passed to irq_set_affinity_hit() has only temporary storage (it's on the stack memory), later accesses to it are illegal. Thus reads from the corresponding procfs affinity_hint file can result in paging request oops. The issue is fixed by the get_cpu_mask() helper, which provides a permanent storage for the cpumask_t parameter.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d4fd0404c1c95b17880f254ebfee3485693fa8ba before 4c4c3052911b577920353a7646e4883d5da40c28; affected d4fd0404c1c95b17880f254ebfee3485693fa8ba before 6c3f1b741c6c2914ea120e3a5790d3e900152f7b; affected d4fd0404c1c95b17880f254ebfee3485693fa8ba before 6f329d9da2a5ae032fcde800a99b118124ed5270; affected d4fd0404c1c95b17880f254ebfee3485693fa8ba before 7237a494decfa17d0b9d0076e6cee3235719de90 |
| Linux / Linux | affected 5.1; unaffected 0 before 5.1; unaffected 5.4.150 through 5.4.*; unaffected 5.10.70 through 5.10.*; unaffected 5.14.9 through 5.14.*; unaffected 5.15 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/4c4c3052911b577920353a7646e4883d5da40c28
- https://git.kernel.org/stable/c/6c3f1b741c6c2914ea120e3a5790d3e900152f7b
- https://git.kernel.org/stable/c/6f329d9da2a5ae032fcde800a99b118124ed5270
- https://git.kernel.org/stable/c/7237a494decfa17d0b9d0076e6cee3235719de90
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.