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HIGH

CVE-2019-19770

CVSS v3

8.2

HIGH

EPSS Score

2.4 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • kernel-tools-libs-develAlmaLinux:8all versions · fixed in 4.18.0-240.el8

Vendor advisories

  • CVE-2019-19770 Red Hat Product Security150 products fixed · 56 known affected

    kernel: use-after-free in debugfs_remove in fs/debugfs/inode.c

    kernel.src as a component of Red Hat Enterprise Linux 5 · kernel as a component of Red Hat Enterprise Linux 6 · kernel-abi-whitelists as a component of Red Hat Enterprise Linux 6

  • RHSA-2020:4609 Red Hat Product Security30 products fixed

    Red Hat Security Advisory: kernel-rt security and bug fix update

  • RHSA-2020:4431 Red Hat Product Security120 products fixed

    Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Full record on NVD

Description

In the Linux kernel 4.19.83, there is a use-after-free (read) in the debugfs_remove function in fs/debugfs/inode.c (which is used to remove a file or directory in debugfs that was previously created with a call to another debugfs function such as debugfs_create_file). NOTE: Linux kernel developers dispute this issue as not being an issue with debugfs, instead this is an issue with misuse of debugfs within blktrace

Technical details

Published
2019-12-12

Frequently asked questions

What is CVE-2019-19770?

In the Linux kernel 4.19.83, there is a use-after-free (read) in the debugfs_remove function in fs/debugfs/inode.c (which is used to remove a file or directory in debugfs that was previously created with a call to another debugfs function such as debugfs_create_file). NOTE: Linux kernel developers dispute this issue as not being an issue with debugfs, instead this is an issue with misuse of debugfs within blktrace

Is CVE-2019-19770 actively exploited?

Active exploitation of CVE-2019-19770 has not been confirmed. Its EPSS score was 2.4% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-19770?

CVE-2019-19770 has a CVSS v3 base score of 8.2 (HIGH severity).

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