diff options
| -rw-r--r-- | sys/dev/pci/pci.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/dev/pci/pci.c b/sys/dev/pci/pci.c index deb9428..523c21d 100644 --- a/sys/dev/pci/pci.c +++ b/sys/dev/pci/pci.c @@ -379,6 +379,12 @@ pci_read_extcap(device_t pcib, pcicfgregs *cfg) * Read capability entries. */ while (nextptr != 0) { + /* Sanity check */ + if (nextptr > 255) { + printf("illegal PCI extended capability offset %d\n", + nextptr); + return; + } /* Find the next entry */ ptr = nextptr; nextptr = REG(ptr + 1, 1); |
