Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: 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')
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 before a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb; affected 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 before beda3c9730ad3087d01aa1d0415c40942042ec87; affected 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 before 00dc50cede96738dadc64b20e671186cddb8a58d; affected 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 before 2838d7bbb551861c25187dfb581ed6e7a56762e9; affected 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 before 0ee5c5d804d592a8328a425b9274487d393d3a05 |
| Linux / Linux | affected 5.0; unaffected 0 before 5.0; unaffected 6.6.160 through 6.6.*; unaffected 6.12.113 through 6.12.*; unaffected 6.18.56 through 6.18.*; unaffected 7.2.10 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb
- https://git.kernel.org/stable/c/beda3c9730ad3087d01aa1d0415c40942042ec87
- https://git.kernel.org/stable/c/00dc50cede96738dadc64b20e671186cddb8a58d
- https://git.kernel.org/stable/c/2838d7bbb551861c25187dfb581ed6e7a56762e9
- https://git.kernel.org/stable/c/0ee5c5d804d592a8328a425b9274487d393d3a05