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| author | Yafang Shao <laoar.shao@gmail.com> | 2026-06-28 19:46:35 +0800 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2026-07-07 12:54:37 +0200 |
| commit | 1a38fd13c31ed8e7c7b598cc975ecc0f41fca468 (patch) | |
| tree | 4ff8254adc748a7702cdf2005b4a5af78e653cd2 /scripts/objdiff | |
| parent | 0839c8963b7b28d25350bd5ea69bacde794124ab (diff) | |
| download | linux-1a38fd13c31ed8e7c7b598cc975ecc0f41fca468.tar.gz linux-1a38fd13c31ed8e7c7b598cc975ecc0f41fca468.zip | |
livepatch: Fix NULL pointer dereference in klp_find_func()
A NULL old_name in a newly loaded livepatch's function entry causes a
NULL pointer dereference in strcmp():
klp_init_patch()
klp_add_nops()
klp_find_func()
strcmp(old_func->old_name, func->old_name)
Add klp_check_patch() at the beginning of klp_enable_patch() to reject
patches with NULL old_name before they reach this code path.
Reported-by: sashiko-bot <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/live-patching/20260529040130.95A9C1F00893@smtp.kernel.org/
Suggested-by: Petr Mladek <pmladek@suse.com>
Suggested-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Tested-by: Petr Mladek <pmladek@suse.com>
Link: https://patch.msgid.link/20260628114635.33572-1-laoar.shao@gmail.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
Diffstat (limited to 'scripts/objdiff')
0 files changed, 0 insertions, 0 deletions