[PATCH v2 0/2] exec: Avoid pathological argc, envc, and bprm->p values
From: Kees Cook
Date: Fri Jun 21 2024 - 16:51:02 EST
Hi,
This pair of patches replaces the last patch in this[1] series.
Perform bprm argument overflow checking but only do argmin checks for MMU
systems. To avoid tripping over this again, argmin is explicitly defined
only for CONFIG_MMU. Thank you to Guenter Roeck for finding this issue
(again)!
-Kees
[1] https://lore.kernel.org/all/20240520021337.work.198-kees@xxxxxxxxxx/
Kees Cook (2):
execve: Keep bprm->argmin behind CONFIG_MMU
exec: Avoid pathological argc, envc, and bprm->p values
fs/exec.c | 36 +++++++++++++++++++++++++++++-------
fs/exec_test.c | 30 +++++++++++++++++++++++++++++-
include/linux/binfmts.h | 2 +-
3 files changed, 59 insertions(+), 9 deletions(-)
--
2.34.1