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).
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 4.18.20-1 | — |
| Debian 13 | linux | 4.18.20-1 | — |
| Debian 12 | linux | 4.18.20-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | linux | 4.15.0-46.49 | USN-3901-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1033.35 | USN-3901-1 |
| Ubuntu 18.04 LTS | linux-azure | 4.18.0-1011.11~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp | 4.15.0-1028.29 | USN-3901-1 |
| Ubuntu 18.04 LTS | linux-gcp-edge | 4.18.0-1006.7~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe | 4.18.0-14.15~18.04.1 | USN-3872-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1030.30 | USN-3901-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1034.39 | USN-3901-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1009.11 | USN-3901-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1032.34 | USN-3901-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1033.35~16.04.1 | USN-3901-2 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1040.44 | USN-3901-2 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1028.29~16.04.1 | USN-3901-2 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-46.49~16.04.1 | USN-3901-2 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1009.11~16.04.1 | USN-3901-2 |
| Ubuntu 14.04 LTS | linux-azure | 4.15.0-1040.44~14.04.1 | USN-3901-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-147.rt24.93.el8 | RHSA-2019:3309 |
| RHEL 8 | perf +26 | 4.18.0-147.el8 | RHSA-2019:3517 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | kernel-azure +2 | 4.12.14-5.19.1 | SUSE-SU-2019:0150-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-25.28.1 | SUSE-SU-2019:0224-1 |
| SLES 12 SP4 | kernel-azure +2 | 4.12.14-6.6.2 | SUSE-SU-2019:0222-1 |
| SLES 12 SP4 | kernel-docs +4 | 4.12.14-95.6.1 | SUSE-SU-2019:0196-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP4 | kernel-azure +2 | 4.12.14-6.6.2 | SUSE-SU-2019:0222-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.6.1 | SUSE-SU-2019:0196-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-25.28.1 | SUSE-SU-2019:0224-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_8 | 1-1.3.1 | SUSE-SU-2019:0224-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_2 | 1-6.3.1 | SUSE-SU-2019:0196-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.0 | kernel-source | 4.12.14-lp150.12.45.1 | openSUSE-SU-2019:0065-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-147.el8 | ELSA-2019-3517 |
| Oracle Linux 7 | perf +10 | 4.14.35-1902.302.2.el7uek | ELSA-2020-5676 |
Advisories 12
- RHSA-2019:3517 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2019:3309 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- USN-3901-1 linux, linux-aws, linux-gcp, linux-kvm, linux-oem, linux-oracle, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3901-2 linux-hwe, linux-aws-hwe, linux-azure, linux-gcp, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3872-1 linux-hwe vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2019:0222-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0150-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0224-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0196-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:0065-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2020-5676 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 11, 2020
- ELSA-2019-3517 Important: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 14, 2019
References
- https://github.com/torvalds/linux/commit/f43f39958beb206b53292801e216d9b8a660f087
- USN-3872-1 vendor-advisory
- USN-3901-2 vendor-advisory
- USN-3878-1 vendor-advisory
- USN-3878-2 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39958beb206b53292801e216d9b8a660f087
- https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.3
- USN-3901-1 vendor-advisory
- RHSA-2019:3309 vendor-advisory
- RHSA-2019:3517 vendor-advisory