CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
52.6%
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.
Author | Note |
---|---|
tyhicks | Requires >= 140 GiB of RAM which is rare |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < 4.15.0-60.67 | UNKNOWN |
ubuntu | 19.04 | noarch | linux | < 5.0.0-21.22 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-165.193 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1047.49 | UNKNOWN |
ubuntu | 19.04 | noarch | linux-aws | < 5.0.0-1011.12 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1095.106 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1047.49~16.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure | < 5.0.0-1014.14~18.04.1 | UNKNOWN |
ubuntu | 19.04 | noarch | linux-azure | < 5.0.0-1012.12 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure | < 4.15.0-1056.61 | UNKNOWN |
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=15fab63e1e57be9fdb5eec1bbc5916e9825e9acb
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6b3a707736301c2128ca85ce85fb13f60b5e350a
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=88b1a17dfc3ed7728316478fae0f5ad508f50397
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8fde12ca79aff9b5ba951fce1a2641901b8d8e64
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f958d7b528b1b40c44cfda5eabe2d82760d868c3
launchpad.net/bugs/cve/CVE-2019-11487
lwn.net/Articles/786044/
nvd.nist.gov/vuln/detail/CVE-2019-11487
security-tracker.debian.org/tracker/CVE-2019-11487
ubuntu.com/security/notices/USN-4069-1
ubuntu.com/security/notices/USN-4069-2
ubuntu.com/security/notices/USN-4115-1
ubuntu.com/security/notices/USN-4118-1
ubuntu.com/security/notices/USN-4145-1
www.cve.org/CVERecord?id=CVE-2019-11487
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
52.6%