diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2008-07-01 17:18:17 +0100 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2008-07-01 09:51:53 -0700 |
| commit | a94c248113b86bbbc47d027a4004b70f2be298b1 (patch) | |
| tree | b33c29082b1294287bb45f95730f87db002fba98 | |
| parent | 543cf4cb3fe6f6cae3651ba918b9c56200b257d0 (diff) | |
| download | kernel-crypto-a94c248113b86bbbc47d027a4004b70f2be298b1.tar.gz kernel-crypto-a94c248113b86bbbc47d027a4004b70f2be298b1.tar.xz kernel-crypto-a94c248113b86bbbc47d027a4004b70f2be298b1.zip | |
PCI: Restrict VPD read permission to root
Some PCI devices will lock up if we attempt to read from VPD addresses
beyond some device-dependent limit. Until we can identify these
devices and adjust the file size accordingly, only let root read VPD
through sysfs to prevent a DoS by normal users.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
| -rw-r--r-- | drivers/pci/pci-sysfs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 6f3c7446c32..1f855f028e9 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -738,7 +738,7 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev) pdev->vpd->attr = attr; attr->size = pdev->vpd->ops->get_size(pdev); attr->attr.name = "vpd"; - attr->attr.mode = S_IRUGO | S_IWUSR; + attr->attr.mode = S_IRUSR | S_IWUSR; attr->read = pci_read_vpd; attr->write = pci_write_vpd; retval = sysfs_create_bin_file(&pdev->dev.kobj, attr); |