| Message ID | 20210611035044.87639-1-mie@igel.co.jp |
|---|---|
| State | New |
| Headers | show |
| Series | PCI: endpoint: Fix use after free in pci_epf_remove_cfs() | expand |
diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci-epf-core.c index e9289d10f822..538e902b0ba6 100644 --- a/drivers/pci/endpoint/pci-epf-core.c +++ b/drivers/pci/endpoint/pci-epf-core.c @@ -202,8 +202,10 @@ static void pci_epf_remove_cfs(struct pci_epf_driver *driver) return; mutex_lock(&pci_epf_mutex); - list_for_each_entry_safe(group, tmp, &driver->epf_group, group_entry) + list_for_each_entry_safe(group, tmp, &driver->epf_group, group_entry) { + list_del(&group->group_entry); pci_ep_cfs_remove_epf_group(group); + } list_del(&driver->epf_group); mutex_unlock(&pci_epf_mutex); }
All of entries are freed in a loop, however, the freed entry is accessed by list_del() after the loop. Fixes: ef1433f ("PCI: endpoint: Create configfs entry for each pci_epf_device_id table entry") Signed-off-by: Shunsuke Mie <mie@igel.co.jp> --- drivers/pci/endpoint/pci-epf-core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)