Description
An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR.
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 | 4.18.10-1 | — |
| Debian 13 | linux | 4.18.10-1 | — |
| Debian 12 | linux | 4.18.10-1 | — |
| Debian 9 | linux | 4.9.110-3+deb9u5 | DSA-4308-1 |
| Debian 8 | linux | 3.16.59-1 | DLA-1529-1 |
| Debian 8 | linux-4.9 | 4.9.110-3+deb9u5~deb8u1 | DLA-1531-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-gcp-6.11 +4 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +3 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-24.26 | USN-3695-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1011.11 | USN-3695-1 |
| Ubuntu 18.04 LTS | linux-azure | 4.15.0-1014.14 | USN-3695-1 |
| Ubuntu 18.04 LTS | linux-gcp | 4.15.0-1010.10 | USN-3695-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1012.12 | USN-3695-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1009.12 | USN-3695-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1013.14 | USN-3695-1 |
| Ubuntu 16.04 LTS | linux | 4.4.0-130.156 | USN-3696-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1062.71 | USN-3696-1 |
| Ubuntu 16.04 LTS | linux-gcp +1 | 4.15.0-1014.14~16.04.1 | USN-3695-2 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-24.26~16.04.1 | USN-3695-2 |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1029.34 | USN-3696-1 |
| Ubuntu 16.04 LTS | linux-oem | 4.13.0-1031.35 | USN-3697-2 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1092.100 | USN-3696-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1095.100 | USN-3696-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-153.203 | USN-3698-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1024.25 | USN-3696-2 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-130.156~14.04.1 | USN-3696-2 |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1008.10 | — |
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +10 | 3.10.0-1062.rt56.1022.el7 | RHSA-2019:2043 |
| RHEL 7 | perf +18 | 3.10.0-1062.el7 | RHSA-2019:2029 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-150100.197.114.2 | SUSE-SU-2022:2111-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.97.1 | SUSE-SU-2022:1651-1 |
| SLES 12 SP5 | kernel-docs +3 | 4.12.14-122.121.2 | SUSE-SU-2022:1686-1 |
| SLES 12 SP5 | kernel-obs-build | 4.12.14-122.121.1 | SUSE-SU-2022:1686-1 |
| SLES 12 SP3 | kernel-default | 4.4.180-94.164.3 | SUSE-SU-2022:2082-1 |
| SLES 12 SP3 | kernel-syms +1 | 4.4.180-94.164.2 | SUSE-SU-2022:2082-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_45 | 1-4.3.2 | SUSE-SU-2022:2082-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.175.2 | SUSE-SU-2022:2077-1 |
| SLES 11 SP4 | kernel-ec2 +5 | 3.0.101-108.138.1 | SUSE-SU-2023:0416-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP1 | kernel-docs +4 | 4.12.14-150100.197.114.2 | SUSE-SU-2022:2111-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.97.1 | SUSE-SU-2022:1651-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.121.2 | SUSE-SU-2022:1686-1 |
| SLES for SAP 12 SP3 | kernel-default | 4.4.180-94.164.3 | SUSE-SU-2022:2082-1 |
| SLES for SAP 12 SP3 | kernel-syms +1 | 4.4.180-94.164.2 | SUSE-SU-2022:2082-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_45 | 1-4.3.2 | SUSE-SU-2022:2082-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.89.1 | SUSE-SU-2022:1668-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-150100.197.114.2 | SUSE-SU-2022:2111-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_31 | 1-150100.3.3.2 | SUSE-SU-2022:2111-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.121.2 | SUSE-SU-2022:1686-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_31 | 1-8.5.2 | SUSE-SU-2022:1686-1 |
| SLE HPC 15 SP1 | kernel-docs +4 | 4.12.14-150100.197.114.2 | SUSE-SU-2022:2111-1 |
| SUSE OpenStack Cloud Crowbar 8 | kernel-default | 4.4.180-94.164.3 | SUSE-SU-2022:2082-1 |
| SUSE OpenStack Cloud Crowbar 8 | kernel-syms +1 | 4.4.180-94.164.2 | SUSE-SU-2022:2082-1 |
| SUSE OpenStack Cloud Crowbar 8 | kgraft-patch-SLE12-SP3_Update_45 | 1-4.3.2 | SUSE-SU-2022:2082-1 |
| SUSE OpenStack Cloud 8 | kernel-default | 4.4.180-94.164.3 | SUSE-SU-2022:2082-1 |
| SUSE OpenStack Cloud 8 | kernel-syms +1 | 4.4.180-94.164.2 | SUSE-SU-2022:2082-1 |
| SUSE OpenStack Cloud 8 | kgraft-patch-SLE12-SP3_Update_45 | 1-4.3.2 | SUSE-SU-2022:2082-1 |
| SUSE HPE Helion OpenStack 8 | kernel-default | 4.4.180-94.164.3 | SUSE-SU-2022:2082-1 |
| SUSE HPE Helion OpenStack 8 | kernel-syms +1 | 4.4.180-94.164.2 | SUSE-SU-2022:2082-1 |
| SUSE HPE Helion OpenStack 8 | kgraft-patch-SLE12-SP3_Update_45 | 1-4.3.2 | SUSE-SU-2022:2082-1 |
| SUSE Enterprise Storage 6 | kernel-docs +4 | 4.12.14-150100.197.114.2 | SUSE-SU-2022:2111-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | kernel-debug +4 | 4.12.14-150100.197.114.2 | SUSE-SU-2022:2111-1 |
| openSUSE Leap 15.3 | kernel-debug +4 | 4.12.14-150100.197.114.2 | SUSE-SU-2022:2111-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | perf +8 | 4.14.77-80.57.amzn2 | ALAS2-2019-1279, ALAS2-2018-1100 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.28.1.el6uek +1 | 0.4.5-3.el6 | ELSA-2019-4316, ELSA-2018-4300 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.28.1.el7uek +1 | 0.4.5-3.el7 | ELSA-2019-4316, ELSA-2018-4300 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.28.1.el7uek | ELSA-2019-4509, ELSA-2019-4316, ELSA-2018-4304 |
| Oracle Linux 7 | kernel-uek-tools +3 | 4.14.35-1818.5.4.el7uek | ELSA-2019-4509, ELSA-2018-4304 |
| Oracle Linux 7 | perf +12 | 3.10.0-1062.el7 | ELSA-2019-4509, ELSA-2019-2029, ELSA-2018-4304 |
Advisories 27
- RHSA-2019:2043 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2019:2029 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- USN-3696-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3698-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3695-1 linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oem, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4308-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1529-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1531-1 linux-4.9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3696-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3697-2 linux-oem vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3695-2 linux-hwe, linux-azure vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2022:2111-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2077-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1686-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2082-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0416-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1668-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1651-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2018-1100 Moderate: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Apr 8, 2025
- WID-SEC-2022-0309 Linux Kernel: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen BSI CERT-Bund (WID) · Feb 15, 2023
- ALAS2-2019-1279 Low: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 19, 2019
- ELSA-2019-2029 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 13, 2019
- ELSA-2019-4509 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 15, 2019
- ELSA-2019-4316 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 4, 2019
- ELSA-2018-4304 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 11, 2018
- ELSA-2018-4299 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 6, 2018
- ELSA-2018-4300 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 6, 2018
References
- USN-3695-1 vendor-advisory
- USN-3696-1 vendor-advisory
- USN-3695-2 vendor-advisory
- [debian-lts-announce] 20181003 [SECURITY] [DLA 1531-1] linux-4.9 security update mailing-list
- USN-3697-1 vendor-advisory
- https://lkml.org/lkml/2018/3/7/1116
- USN-3697-2 vendor-advisory
- DSA-4308 vendor-advisory
- USN-3698-1 vendor-advisory
- USN-3696-2 vendor-advisory
- USN-3698-2 vendor-advisory
- RHSA-2019:2043 vendor-advisory
- RHSA-2019:2029 vendor-advisory