Use After Free Affecting bpftool package, versions <0:3.10.0-1160.el7


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
2.08% (80th percentile)

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  • Snyk IDSNYK-RHEL7-BPFTOOL-7974812
  • published14 Sept 2024
  • disclosed7 Nov 2019

Introduced: 7 Nov 2019

CVE-2019-19767  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:7 bpftool to version 0:3.10.0-1160.el7 or higher.
This issue was patched in RHSA-2020:4060.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The Linux kernel before 5.4.2 mishandles ext4_expand_extra_isize, as demonstrated by use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c, aka CID-4ea99936a163.

CVSS Base Scores

version 3.1