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23 October 2021, 00:29:24 UTC
Revision 21c5977a836e399fc710ff2c5367845ed5c2527f authored by Dan Rosenberg on 15 June 2011, 22:09:01 UTC, committed by Linus Torvalds on 16 June 2011, 03:04:02 UTC 
alpha: fix several security issues
 
Fix several security issues in Alpha-specific syscalls.  Untested, but
mostly trivial.

1. Signedness issue in osf_getdomainname allows copying out-of-bounds
kernel memory to userland.

2. Signedness issue in osf_sysinfo allows copying large amounts of
kernel memory to userland.

3. Typo (?) in osf_getsysinfo bounds minimum instead of maximum copy
size, allowing copying large amounts of kernel memory to userland.

4. Usage of user pointer in osf_wait4 while under KERNEL_DS allows
privilege escalation via writing return value of sys_wait4 to kernel
memory.

Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent ec8f9ce
History
Tip revision: 21c5977a836e399fc710ff2c5367845ed5c2527f authored by Dan Rosenberg on 15 June 2011, 22:09:01 UTC
alpha: fix several security issues
Tip revision: 21c5977
File Mode Size
Documentation
arch
block
crypto
drivers
firmware
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.gitignore -rw-r--r-- 966 bytes
.mailmap -rw-r--r-- 4.2 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 92.3 KB
Kbuild -rw-r--r-- 2.4 KB
Kconfig -rw-r--r-- 252 bytes
MAINTAINERS -rw-r--r-- 189.9 KB
Makefile -rw-r--r-- 52.2 KB
README -rw-r--r-- 17.1 KB
REPORTING-BUGS -rw-r--r-- 3.3 KB

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