Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: Clear affinity hint before calling ath12k_pci_free_irq() in error path If a shared IRQ is used by the driver due to platform limitation, then the IRQ affinity hint is set right after the allocation of IRQ vectors in ath12k_pci_msi_alloc(). This does no harm unless one of the functions requesting the IRQ fails and attempt to free the IRQ. This may end up with a warning from the IRQ core that is expecting the affinity hint to be cleared before freeing the IRQ: kernel/irq/manage.c: /* make sure affinity_hint is cleaned up */ if (WARN_ON_ONCE(desc->affinity_hint)) desc->affinity_hint = NULL; So to fix this issue, clear the IRQ affinity hint before calling ath12k_pci_free_irq() in the error path. The affinity will be cleared once again further down the error path due to code organization, but that does no harm.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected a3012f206d07fa62b5c2e384cbc3a81a4dbba3c9 before a69a594794fcad96d4cfce12aab6c5014a12b4c8; affected a3012f206d07fa62b5c2e384cbc3a81a4dbba3c9 before 35b33ba76765ce9e72949d957f3cf1feafd2955c; affected a3012f206d07fa62b5c2e384cbc3a81a4dbba3c9 before b43b1e2c52db77c872bd60d30cdcc72c47df70c7 |
| Linux / Linux | affected 6.8; unaffected 0 before 6.8; unaffected 6.12.35 through 6.12.*; unaffected 6.14.2 through 6.14.*; unaffected 6.15 through * |
CWE
No CWE identifiers supplied.