OERV-BSP/kernel-spacemit-k1
4
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

lib/buildid: Fix build ID parsing logic

Browse Source 
The parse_build_id_buf does not account Elf32_Nhdr header size
when getting the build id data pointer and returns wrong build
id data as result.

This is problem only for stable trees that merged c83a80d8b8
fix, the upstream build id code was refactored and returns proper
build id.

Acked-by: Andrii Nakryiko <andrii@kernel.org>
Fixes: c83a80d8b8 ("lib/buildid: harden build ID parsing logic")
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Olsa
2024-11-04 18:52:55 +01:00
committed by Greg Kroah-Hartman
parent 0c623f5692
commit efb258ec33
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
lib/buildid.c
View File

@@ -40,7 +40,7 @@ static int parse_build_id_buf(unsigned char *build_id,
name_sz == note_name_sz &&
memcmp(nhdr + 1, note_name, note_name_sz) == 0 &&
desc_sz > 0 && desc_sz <= BUILD_ID_SIZE_MAX) {
data = note_start + note_off + ALIGN(note_name_sz, 4);
data = note_start + note_off + sizeof(Elf32_Nhdr) + ALIGN(note_name_sz, 4);
memcpy(build_id, data, desc_sz);
memset(build_id + desc_sz, 0, BUILD_ID_SIZE_MAX - desc_sz);
if (size)