diff options
Diffstat (limited to 'source/a/bash/bash-5.1-patches/bash51-009')
| -rw-r--r-- | source/a/bash/bash-5.1-patches/bash51-009 | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/source/a/bash/bash-5.1-patches/bash51-009 b/source/a/bash/bash-5.1-patches/bash51-009 new file mode 100644 index 000000000..2796c3b9b --- /dev/null +++ b/source/a/bash/bash-5.1-patches/bash51-009 @@ -0,0 +1,59 @@ + BASH PATCH REPORT + ================= + +Bash-Release: 5.1 +Patch-ID: bash51-009 + +Bug-Reported-by: Julien Moutinho <julm+bash@sourcephile.fr> +Bug-Reference-ID: <20211004035906.5kiobuzkpeckmvwg@sourcephile.fr> +Bug-Reference-URL: https://lists.gnu.org/archive/html/bug-bash/2021-10/msg00022.html + +Bug-Description: + +The bash malloc implementation of malloc_usable_size() does not follow the +specification. This can cause library functions that use it to overwrite +memory bounds checking. + +Patch (apply with `patch -p0'): + +*** ../bash-5.1-patched/lib/malloc/malloc.c 2020-07-08 10:19:30.000000000 -0400 +--- lib/malloc/malloc.c 2021-10-05 16:10:55.000000000 -0400 +*************** +*** 1287,1297 **** + } + +! /* XXX - should we return 0 if ISFREE? */ +! maxbytes = binsize(p->mh_index); +! +! /* So the usable size is the maximum number of bytes in the bin less the +! malloc overhead */ +! maxbytes -= MOVERHEAD + MSLOP; +! return (maxbytes); + } + +--- 1358,1367 ---- + } + +! /* return 0 if ISFREE */ +! if (p->mh_alloc == ISFREE) +! return 0; +! +! /* Since we use bounds checking, the usable size is the last requested size. */ +! return (p->mh_nbytes); + } + +*** ../bash-5.1/patchlevel.h 2020-06-22 14:51:03.000000000 -0400 +--- patchlevel.h 2020-10-01 11:01:28.000000000 -0400 +*************** +*** 26,30 **** + looks for to find the patch level (for the sccs version string). */ + +! #define PATCHLEVEL 8 + + #endif /* _PATCHLEVEL_H_ */ +--- 26,30 ---- + looks for to find the patch level (for the sccs version string). */ + +! #define PATCHLEVEL 9 + + #endif /* _PATCHLEVEL_H_ */ |