CVE-2018-19854

Name: CVE-2018-19854
Creator: NVD / NIST
Published: 2018-12-04T16:29:00.587+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.43%

Last modified Jun 17, 2026

CVE-2018-19854 is a vulnerability of currently unknown severity. An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are copied to userspace, potentially leaking sensitive memory to user programs. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are copied to userspace, potentially leaking sensitive memory to user programs. NOTE: this is a CVE-2013-2547 regression but with easier exploitability because the attacker does not need a capability (however, the system must have the CONFIG_CRYPTO_USER kconfig option).

Metrics

EPSS Probability

0.43%

34.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 4.19.3
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39958beb206b53292801e216d9b8a660f087Patch, Vendor Advisory
https://access.redhat.com/errata/RHSA-2019:3309
https://access.redhat.com/errata/RHSA-2019:3517
https://github.com/torvalds/linux/commit/f43f39958beb206b53292801e216d9b8a660f087Patch, Third Party Advisory
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.3Vendor Advisory
https://usn.ubuntu.com/3872-1/Third Party Advisory
https://usn.ubuntu.com/3878-1/Third Party Advisory
https://usn.ubuntu.com/3878-2/Third Party Advisory
https://usn.ubuntu.com/3901-1/Third Party Advisory
https://usn.ubuntu.com/3901-2/Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39958beb206b53292801e216d9b8a660f087Patch, Vendor Advisory
https://access.redhat.com/errata/RHSA-2019:3309
https://access.redhat.com/errata/RHSA-2019:3517
https://github.com/torvalds/linux/commit/f43f39958beb206b53292801e216d9b8a660f087Patch, Third Party Advisory
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.3Vendor Advisory
https://usn.ubuntu.com/3872-1/Third Party Advisory
https://usn.ubuntu.com/3878-1/Third Party Advisory
https://usn.ubuntu.com/3878-2/Third Party Advisory
https://usn.ubuntu.com/3901-1/Third Party Advisory
https://usn.ubuntu.com/3901-2/Third Party Advisory

Timeline

Published: Dec 4, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-19854?

How severe is CVE-2018-19854?

Severity scoring for CVE-2018-19854 is pending analysis. The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2018-19854?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-19854?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST