Out-of-Bounds Affecting linux-4.9 package, versions <4.9.110-1~deb8u1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.46% (76th percentile)

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  • Snyk IDSNYK-DEBIAN8-LINUX49-263037
  • published12 Jun 2018
  • disclosed12 Jun 2018

Introduced: 12 Jun 2018

CVE-2018-12233  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Debian:8 linux-4.9 to version 4.9.110-1~deb8u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-4.9 package and not the linux-4.9 package as distributed by Debian. See How to fix? for Debian:8 relevant fixed versions and status.

In the ea_get function in fs/jfs/xattr.c in the Linux kernel through 4.17.1, a memory corruption bug in JFS can be triggered by calling setxattr twice with two different extended attribute names on the same file. This vulnerability can be triggered by an unprivileged user with the ability to create files and execute programs. A kmalloc call is incorrect, leading to slab-out-of-bounds in jfs_xattr.

CVSS Base Scores

version 3.1