Description
The walk_hugetlb_range function in mm/pagewalk.c in the Linux kernel before 4.14.2 mishandles holes in hugetlb ranges, which allows local users to obtain sensitive information from uninitialized kernel memory via crafted use of the mincore() system call.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://usn.ubuntu.com/3617-1/ ↗
- https://usn.ubuntu.com/3619-2/ ↗
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1431 ↗
- https://usn.ubuntu.com/3617-3/ ↗
- https://www.exploit-db.com/exploits/43178/ ↗
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.2 ↗
- https://usn.ubuntu.com/3632-1/ ↗
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=373c4557d2aa362702c4c2d41288fb1e54990b7c ↗
- https://access.redhat.com/errata/RHSA-2018:0502 ↗
- https://usn.ubuntu.com/3617-2/ ↗
- https://github.com/torvalds/linux/commit/373c4557d2aa362702c4c2d41288fb1e54990b7c ↗
- https://usn.ubuntu.com/3619-1/ ↗
- http://www.securityfocus.com/bid/101969 ↗