Use After Free Affecting torvalds/linux package, versions [,5.1.2)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.05% (15th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3004609
  • published26 Jan 2022
  • disclosed23 Apr 2019
  • creditUnknown

Introduced: 23 Apr 2019

CVE-2019-11487  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 5.1.2 or higher.

Overview

Affected versions of this package are vulnerable to Use After Free. 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.

CVSS Base Scores

version 3.1