tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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Merge tag 'firewire-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394

Pull firewire fix from Stefan Richter:
"IEEE 1394 (FireWire) subsystem fix: The character device file
interface for raw 1394 I/O took uninitialized kernel stack as
substitute for missing ioctl() argument data. This could partially
show up in subsequent read() output"

* tag 'firewire-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: cdev: prevent kernel stack leaking into ioctl arguments

Linus Torvalds f720d7df 3865efcb

+1 -2
+1 -2
drivers/firewire/core-cdev.c
··· 1637 1637 _IOC_SIZE(cmd) > sizeof(buffer)) 1638 1638 return -ENOTTY; 1639 1639 1640 - if (_IOC_DIR(cmd) == _IOC_READ) 1641 - memset(&buffer, 0, _IOC_SIZE(cmd)); 1640 + memset(&buffer, 0, sizeof(buffer)); 1642 1641 1643 1642 if (_IOC_DIR(cmd) & _IOC_WRITE) 1644 1643 if (copy_from_user(&buffer, arg, _IOC_SIZE(cmd)))