CVE-2019-11487
High
Description
The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c, include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can occur with FUSE requests.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedApr 23, 2019
First seenApr 23, 2019
How to fix
Update
- linux linux_kernel4.4.216, 4.9.181, 4.14.116, 4.19.39, 5.0.12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 4.4.216, 4.5 ≤ v < 4.9.181, 4.10 ≤ v < 4.14.116, 4.15 ≤ v < 4.19.39, 4.20 ≤ v < 5.0.12, 5.1 | 4.4.216, 4.9.181, 4.14.116, 4.19.39, 5.0.12 |
| debian debian_linux | 8.0 | — |
| canonical ubuntu_linux | 16.04, 18.04, 19.04 | — |
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