diff options
| author | Liu Dalin <liudalin@kylinsec.com.cn> | 2026-08-27 09:54:44 +0800 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2026-09-21 21:12:35 +0200 |
| commit | 0ee5c5d804d592a8328a425b9274487d393d3a05 (patch) | |
| tree | 290b03873e9454df15af1887c0d53d8d950e1054 /tools/perf/scripts/python | |
| parent | cee9395acd8043be0644b25c34bfa86623f2b935 (diff) | |
| download | linux-0ee5c5d804d592a8328a425b9274487d393d3a05.tar.gz linux-0ee5c5d804d592a8328a425b9274487d393d3a05.zip | |
rtc: dev: zero-initialize struct rtc_wkalrm to prevent information leak
The struct rtc_wkalrm has padding holes after the 'pending' member.
When returned to userspace via the RTC_WKALRM_RD ioctl, uninitialized
kernel stack data residing in these holes may be leaked.
Zero-initialize the struct at declaration to eliminate this information
leak risk.
Fixes smatch warnings:
- drivers/rtc/dev.c:392 rtc_dev_ioctl() warn: check that 'alarm' doesn't
leak information (struct has a hole after 'pending')
Fixes: 36e14f5fdfdf ("rtc: rename core files")
Assisted-by: smatch:2.0 [static analysis]
Signed-off-by: Liu Dalin <liudalin@kylinsec.com.cn>
Link: https://patch.msgid.link/B28B7DE18F3A9447+20260827015444.3314227-1-liudalin@kylinsec.com.cn
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions