CVE-2018-19854

MediumCVSS 4.7/10Last modified Jun 17, 2026

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

CVSS 3.0 4.7/10CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-200

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

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
NVD status: Modified

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