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.

References

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html

http://www.openwall.com/lists/oss-security/2019/04/29/1

http://www.securityfocus.com/bid/108054

https://bugs.chromium.org/p/project-zero/issues/detail?id=1752

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=15fab63e1e57be9fdb5eec1bbc5916e9825e9acb

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6b3a707736301c2128ca85ce85fb13f60b5e350a

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=88b1a17dfc3ed7728316478fae0f5ad508f50397

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8fde12ca79aff9b5ba951fce1a2641901b8d8e64

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f958d7b528b1b40c44cfda5eabe2d82760d868c3

https://github.com/torvalds/linux/commit/15fab63e1e57be9fdb5eec1bbc5916e9825e9acb

https://github.com/torvalds/linux/commit/6b3a707736301c2128ca85ce85fb13f60b5e350a

https://github.com/torvalds/linux/commit/88b1a17dfc3ed7728316478fae0f5ad508f50397

https://github.com/torvalds/linux/commit/8fde12ca79aff9b5ba951fce1a2641901b8d8e64

https://github.com/torvalds/linux/commit/f958d7b528b1b40c44cfda5eabe2d82760d868c3

https://lwn.net/Articles/786044/

https://security.netapp.com/advisory/ntap-20190517-0005/

https://support.f5.com/csp/article/K14255532

https://usn.ubuntu.com/4069-1/

https://usn.ubuntu.com/4069-2/

https://usn.ubuntu.com/4115-1/

https://usn.ubuntu.com/4118-1/

Details

Source: MITRE

Published: 2019-04-23

Updated: 2019-05-17

Type: CWE-416

Risk Information

CVSS v2.0

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH