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| author | Jann Horn <[email protected]> | 2025-04-28 13:06:43 +0000 |
|---|---|---|
| committer | Jens Wiklander <[email protected]> | 2025-04-30 12:57:03 +0000 |
| commit | 39bb67edcc582b3b386a9ec983da67fa8a10ec03 (patch) | |
| tree | 39adeb70868ae40467e5266129da951cfd51541b /scripts/gcc-plugins/randomize_layout_plugin.c | |
| parent | tee: optee: smc: remove unnecessary NULL check before release_firmware() (diff) | |
| download | kernel-39bb67edcc582b3b386a9ec983da67fa8a10ec03.tar.gz kernel-39bb67edcc582b3b386a9ec983da67fa8a10ec03.zip | |
tee: Prevent size calculation wraparound on 32-bit kernels
The current code around TEE_IOCTL_PARAM_SIZE() is a bit wrong on
32-bit kernels: Multiplying a user-provided 32-bit value with the
size of a structure can wrap around on such platforms.
Fix it by using saturating arithmetic for the size calculation.
This has no security consequences because, in all users of
TEE_IOCTL_PARAM_SIZE(), the subsequent kcalloc() implicitly checks
for wrapping.
Signed-off-by: Jann Horn <[email protected]>
Signed-off-by: Jens Wiklander <[email protected]>
Tested-by: Rouven Czerwinski <[email protected]>
Diffstat (limited to 'scripts/gcc-plugins/randomize_layout_plugin.c')
0 files changed, 0 insertions, 0 deletions