Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
d4fd0404c1c95b17880f254ebfee3485693fa8ba to < 4c4c3052911b577920353a7646e4883d5da40c28affectedd4fd0404c1c95b17880f254ebfee3485693fa8ba to < 6c3f1b741c6c2914ea120e3a5790d3e900152f7baffectedd4fd0404c1c95b17880f254ebfee3485693fa8ba to < 6f329d9da2a5ae032fcde800a99b118124ed5270affectedd4fd0404c1c95b17880f254ebfee3485693fa8ba to < 7237a494decfa17d0b9d0076e6cee3235719de90affected
Linux Linux
Default version status: affected
5.1affected0 to < 5.1unaffected5.4.150 to ≤ 5.4.*unaffected5.10.70 to ≤ 5.10.*unaffected5.14.9 to ≤ 5.14.*unaffected5.15 to ≤ *unaffected