CVE-2018-12896
- State
- Published
- Severity
- Not scored
- Published
- Jul 2, 2018
- Updated
- Aug 5, 2024
- Reserved
- Jun 26, 2018
Description
An issue was discovered in the Linux kernel through 4.17.3. An Integer Overflow in kernel/time/posix-timers.c in the POSIX timer code is caused by the way the overrun accounting works. Depending on interval and expiry time values, the overrun can be larger than INT_MAX, but the accounting is int based. This basically makes the accounting values, which are visible to user space via timer_getoverrun(2) and siginfo::si_overrun, random. For example, a local user can cause a denial of service (signed integer overflow) via crafted mmap, futex, timer_create, and timer_settime system calls.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://bugzilla.kernel.org/show_bug.cgi?id=200189
- USN-3848-2vendor-advisory
- USN-3847-1vendor-advisory
- https://github.com/torvalds/linux/commit/78c9c4dfbf8c04883941445a195276bb4bb92c76
- USN-3847-2vendor-advisory
- USN-3849-1vendor-advisory
- USN-3849-2vendor-advisory
- USN-3848-1vendor-advisory
- USN-3847-3vendor-advisory
- https://github.com/lcytxw/bug_repro/tree/master/bug_200189
- [debian-lts-announce] 20190315 [SECURITY] [DLA 1715-1] linux-4.9 security updatemailing-list
- [debian-lts-announce] 20190327 [SECURITY] [DLA 1731-1] linux security updatemailing-list
- [debian-lts-announce] 20190401 [SECURITY] [DLA 1731-2] linux regression updatemailing-list
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