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| author | Denys Vlasenko <vda.linux@googlemail.com> | 2018-04-14 14:50:47 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2018-04-14 14:50:47 +0200 |
| commit | d5f5045b43bd7a55402dfcecde511a2c207d07b7 (patch) | |
| tree | 9e57ed30cf4918a5e205b964ce7dd5d15b295590 /coreutils/realpath.c | |
| parent | 0dd3be8c0933d5649152b6019b975876e804e22a (diff) | |
| download | busybox-d5f5045b43bd7a55402dfcecde511a2c207d07b7.tar.gz | |
ash: expand: Fix buffer overflow in expandmeta
Upstream commit:
Date: Sun, 25 Mar 2018 16:38:00 +0800
expand: Fix buffer overflow in expandmeta
The native version of expandmeta allocates a buffer that may be
overrun for two reasons. First of all the size is 1 byte too small
but this is normally hidden because the minimum size is rounded
up to 2048 bytes. Secondly, if the directory level is deep enough,
any buffer can be overrun.
This patch fixes both problems by calling realloc when necessary.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
function old new delta
expmeta 517 635 +118
expandarg 990 996 +6
mklocal 288 290 +2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 126/0) Total: 126 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'coreutils/realpath.c')
0 files changed, 0 insertions, 0 deletions