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.
Published 2019-04-23 22:29:05
Updated 2023-02-24 18:43:06
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

Threat overview for CVE-2019-11487

Top countries where our scanners detected CVE-2019-11487
Top open port discovered on systems with this issue 49152
IPs affected by CVE-2019-11487 14,464
Threat actors abusing to this issue? Yes
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Exploit prediction scoring system (EPSS) score for CVE-2019-11487

Probability of exploitation activity in the next 30 days: 0.11%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 44 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2019-11487

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
7.2
HIGH AV:L/AC:L/Au:N/C:C/I:C/A:C
3.9
10.0
NIST
7.8
HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1.8
5.9
NIST

CWE ids for CVE-2019-11487

  • Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-11487

Products affected by CVE-2019-11487

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