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).
References (10)
Core 10
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/torvalds/linux/commit/f43f39958beb206b53292801e216d9b8a660f087
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3872-1/
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3901-2/
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3878-1/
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3878-2/
Patch, Vendor Advisory x_refsource_misc
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39958beb206b53292801e216d9b8a660f087
Vendor Advisory x_refsource_misc
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.3
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3901-1/
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3309
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3517
Scores
CVSS v3
4.7
EPSS
0.0005
EPSS Percentile
16.4%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-200
Status
published
Products (5)
canonical/ubuntu_linux
14.04
canonical/ubuntu_linux
16.04
canonical/ubuntu_linux
18.04
canonical/ubuntu_linux
18.10
linux/linux_kernel
< 4.19.3
Published
Dec 04, 2018
Tracked Since
Feb 18, 2026