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| author | Dan Rosenberg <drosenberg@vsecurity.com> | 2011-06-15 15:09:01 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-03 12:42:52 -0700 |
| commit | 3d0475119d8722798db5e88f26493f6547a4bb5b (patch) | |
| tree | 9fde5a9c02e96805eebcf67fd7c041bdc72513ab /Documentation | |
| parent | 30f311db2bee9f2e0373619dee1acd6182819ee1 (diff) | |
| download | linux-stable-3d0475119d8722798db5e88f26493f6547a4bb5b.tar.gz linux-stable-3d0475119d8722798db5e88f26493f6547a4bb5b.tar.bz2 linux-stable-3d0475119d8722798db5e88f26493f6547a4bb5b.zip | |
alpha: fix several security issues
commit 21c5977a836e399fc710ff2c5367845ed5c2527f upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions