diff options
| author | Mark Wielaard <[email protected]> | 2024-08-28 23:58:58 +0200 |
|---|---|---|
| committer | Mark Wielaard <[email protected]> | 2024-09-11 17:09:53 +0200 |
| commit | 30df1adeab5a9285830042b446a828319c6aa743 (patch) | |
| tree | 6eca24ca0d1ab24990bdc7442efe2a12a6456000 /libelf/elf32_xlatetof.c | |
| parent | 41022b0bfd934b37cdf9572d27048263b118f252 (diff) | |
libelf: Don't crash elf[32|64]_xlateto[fm] on bad arguments.
Check that src and dest aren't NULL and that src->d_type < ELF_T_NUM.
* elf32_xlatetof.c (elfw2(LIBELFBITS, xlatetof)): Check src, dest
and src->d_type are valid.
* elf32_xlatetom.c (elfw2(LIBELFBITS, xlatetom)): Likewise.
Signed-off-by: Mark Wielaard <[email protected]>
Diffstat (limited to 'libelf/elf32_xlatetof.c')
| -rw-r--r-- | libelf/elf32_xlatetof.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/libelf/elf32_xlatetof.c b/libelf/elf32_xlatetof.c index ab3e609e..44c75ef0 100644 --- a/libelf/elf32_xlatetof.c +++ b/libelf/elf32_xlatetof.c @@ -45,6 +45,15 @@ Elf_Data * elfw2(LIBELFBITS, xlatetof) (Elf_Data *dest, const Elf_Data *src, unsigned int encode) { + if (src == NULL || dest == NULL) + return NULL; + + if (src->d_type >= ELF_T_NUM) + { + __libelf_seterrno (ELF_E_UNKNOWN_TYPE); + return NULL; + } + /* First test whether the input data is really suitable for this type. This means, whether there is an integer number of records. Note that for this implementation the memory and file size of the |