Description
Race condition in the ALSA subsystem in the Linux kernel before 4.13.8 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted /dev/snd/seq ioctl calls, related to sound/core/seq/seq_clientmgr.c and sound/core/seq/seq_ports.c.
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 | 4.13.4-2 | — |
| Debian 13 | linux | 4.13.4-2 | — |
| Debian 12 | linux | 4.13.4-2 | — |
| Debian 7 | linux | 3.2.96-1 | DLA-1200-1 |
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 16.04 LTS | linux | 4.4.0-101.124 | USN-3485-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1041.50 | USN-3485-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.13.0-1005.7 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.13.0-1002.5 | — |
| Ubuntu 16.04 LTS | linux-gke | 4.4.0-1034.34 | USN-3485-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.13.0-32.35~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1010.15 | USN-3485-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1077.85 | USN-3485-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1079.84 | USN-3485-1 |
| Ubuntu 14.04 LTS | linux | 3.13.0-153.203 | USN-3698-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1003.3 | USN-3485-3 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-101.124~14.04.1 | USN-3485-2 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 | 3.10.0-862.rt56.804.el7 | RHSA-2018:0676 |
| RHEL 7 | perf +18 | 3.10.0-862.el7 | RHSA-2018:1062 |
| RHEL 6 | perf +16 | 2.6.32-754.3.5.el6 | RHSA-2018:2390 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7.4 EUS | perf +18 | 3.10.0-693.25.2.el7 | RHSA-2018:1130 |
| RHEL 5.9 AUS | kernel +10 | 2.6.18-348.42.1.el5 | RHSA-2018:3823 |
| RHEL 5 ELS | kernel +12 | 2.6.18-436.el5 | RHSA-2018:3822 |
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-693.25.2.rt56.612.el6rt | RHSA-2018:1170 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | kernel-docs | 4.4.92-6.18.3 | SUSE-SU-2017:2847-1 |
| SLES 12 SP3 | kernel-syms +3 | 4.4.92-6.18.1 | SUSE-SU-2017:2847-1 |
| SLES 12 SP2 | kernel-docs +4 | 4.4.103-92.53.1 | SUSE-SU-2017:3410-1 |
| SLES 12 SP1 | kernel-xen +3 | 3.12.74-60.64.63.1 | SUSE-SU-2017:2908-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_22 | 1-2.1 | SUSE-SU-2017:2908-1 |
| SLES 12 | kernel-ec2 +4 | 3.12.61-52.101.1 | SUSE-SU-2017:2920-1, SUSE-SU-2017:2908-1 |
| SLES 12 | kgraft-patch-SLE12_Update_28 | 1-8.1 | SUSE-SU-2017:2920-1 |
| SLES 11 SP4 | kernel-docs | 3.0.101-108.18.3 | SUSE-SU-2017:3265-1 |
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-108.18.1 | SUSE-SU-2017:3265-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP3 | kernel-ec2 +7 | 3.0.101-0.47.106.11.1 | SUSE-SU-2018:0040-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.92-6.18.1 | SUSE-SU-2017:2847-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.103-92.53.1 | SUSE-SU-2017:3410-1 |
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.74-60.64.63.1 | SUSE-SU-2017:2908-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_22 | 1-2.1 | SUSE-SU-2017:2908-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +8 | 3.0.101-108.18.1 | SUSE-SU-2017:3265-1 |
| SLE Real Time 12 SP2 | kernel-rt +3 | 4.4.95-21.1 | SUSE-SU-2017:3267-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-69.11.1 | SUSE-SU-2017:3165-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_4 | 1-4.3 | SUSE-SU-2017:2847-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP2_Update_16 | 1-3.3.1 | SUSE-SU-2017:3410-1 |
| SUSE OpenStack Cloud 6 | kernel-xen +3 | 3.12.74-60.64.63.1 | SUSE-SU-2017:2908-1 |
| SUSE OpenStack Cloud 6 | kgraft-patch-SLE12-SP1_Update_22 | 1-2.1 | SUSE-SU-2017:2908-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | kernel-ec2 +6 | 3.0.101-0.47.106.11.1 | SUSE-SU-2018:0040-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 5.14.6-1.4 | openSUSE-SU-2024:13704-1, openSUSE-SU-2024:10728-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | perf +11 | 3.10.0-862.el7 | ELSA-2018-1062 |
Advisories 24
- RHSA-2018:2390 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2018:3822 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:3823 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:1170 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:1130 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:1062 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:0676 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3698-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3485-1 linux, linux-aws, linux-gke, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1200-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3485-2 linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3485-3 linux-aws vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2017:3410-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3165-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13704-1 kernel-devel-longterm-6.6.17-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3265-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0040-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3267-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2908-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2920-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10728-1 kernel-devel-5.14.6-1.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-1212 Oracle Communications Applications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 2, 2025
- SUSE-SU-2017:2847-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2018-1062 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 16, 2018
References
- [oss-security] 20171011 Linux kernel: alsa: use-after-free in /dev/snd/seq CVE-2017-15265 mailing-list
- 101288 vdb-entry
- [debian-lts-announce] 20171210 [SECURITY] [DLA 1200-1] linux security update mailing-list
- RHSA-2018:2390 vendor-advisory
- 1039561 vdb-entry
- RHSA-2018:1062 vendor-advisory
- RHSA-2018:3823 vendor-advisory
- RHSA-2018:0676 vendor-advisory
- [alsa-devel] 20171011 [PATCH] ALSA: seq: Fix use-after-free at creating a port mailing-list
- RHSA-2018:1170 vendor-advisory
- USN-3698-1 vendor-advisory
- RHSA-2018:1130 vendor-advisory
- RHSA-2018:3822 vendor-advisory
- USN-3698-2 vendor-advisory
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
- https://github.com/torvalds/linux/commit/71105998845fb012937332fe2e806d443c09e026
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=71105998845fb012937332fe2e806d443c09e026
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.8
- https://bugzilla.suse.com/show_bug.cgi?id=1062520
- https://source.android.com/security/bulletin/2018-02-01