diff options
Diffstat (limited to 'aports/busybox/0013-ash-fix-unsafe-use-of-mempcpy.patch')
| -rw-r--r-- | aports/busybox/0013-ash-fix-unsafe-use-of-mempcpy.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/aports/busybox/0013-ash-fix-unsafe-use-of-mempcpy.patch b/aports/busybox/0013-ash-fix-unsafe-use-of-mempcpy.patch new file mode 100644 index 0000000..944fd38 --- /dev/null +++ b/aports/busybox/0013-ash-fix-unsafe-use-of-mempcpy.patch @@ -0,0 +1,32 @@ +From 7750b5a25a8cf9081b7c248687c876d0068e85bb Mon Sep 17 00:00:00 2001 +From: Denys Vlasenko <vda.linux@googlemail.com> +Date: Tue, 1 Mar 2022 09:56:54 +0100 +Subject: [PATCH] ash: fix unsafe use of mempcpy + +function old new delta +subevalvar 1549 1557 +8 + +Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> +--- + shell/ash.c | 8 +++++++- + 1 file changed, 7 insertions(+), 1 deletion(-) + +diff --git a/shell/ash.c b/shell/ash.c +index 54335c5dd..44ec2eafd 100644 +--- a/shell/ash.c ++++ b/shell/ash.c +@@ -7191,7 +7191,13 @@ subevalvar(char *start, char *str, int strloc, + len = orig_len - pos; + + if (!quotes) { +- loc = mempcpy(startp, startp + pos, len); ++ /* want: loc = mempcpy(startp, startp + pos, len) ++ * but it does not allow overlapping arguments */ ++ loc = startp; ++ while (--len >= 0) { ++ *loc = loc[pos]; ++ loc++; ++ } + } else { + for (vstr = startp; pos != 0; pos--) { + if ((unsigned char)*vstr == CTLESC) |