Description
Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file.
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 | 4.15.17-1 | — |
| Debian 13 | linux | 4.15.17-1 | — |
| Debian 12 | linux | 4.15.17-1 | — |
| Debian 9 | linux | 4.9.88-1 | DSA-4188-1 |
| Debian 8 | linux | 3.16.56-1 | DSA-4187-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | linux | 3.2.101-1 | DLA-1369-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | 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 | 4.4.0-127.153 | USN-3654-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1060.69 | USN-3654-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1013.13~16.04.2 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1014.14~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-24.26~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1026.31 | USN-3654-1 |
| Ubuntu 16.04 LTS | linux-oem | 4.13.0-1031.35 | USN-3697-2 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1090.98 | USN-3656-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1093.98 | USN-3656-1 |
| Ubuntu 14.04 LTS | linux | 3.13.0-153.203 | USN-3698-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1022.22 | USN-3654-2 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-127.153~14.04.1 | USN-3654-2 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1008.10 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-alt +1 | 4.14.0-115.el7a | RHSA-2018:2948 |
| RHEL 7 | kernel-rt +10 | 3.10.0-957.rt56.910.el7 | RHSA-2018:3096 |
| RHEL 7 | perf +18 | 3.10.0-957.el7 | RHSA-2018:3083, RHSA-2018:2948 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | kernel-azure | 4.4.162-4.19.2 | SUSE-SU-2019:0095-1 |
| SLES 12 SP3 | kernel-docs +4 | 4.4.156-94.57.1 | SUSE-SU-2018:3003-1 |
| SLES 12 SP3 | kernel-syms-azure +1 | 4.4.162-4.19.1 | SUSE-SU-2019:0095-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.95.1 | SUSE-SU-2018:3084-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_25 | 1-3.4.1 | SUSE-SU-2018:3084-1 |
| SLES 12 SP2 | lttng-modules | 2.7.1-9.6.1 | SUSE-SU-2018:3084-1 |
| SLES 12 SP1 | kernel-xen +3 | 3.12.74-60.64.88.1 | SUSE-SU-2018:1220-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_27 | 1-2.3.1 | SUSE-SU-2018:1220-1 |
| SLES 12 | kernel-ec2 +4 | 3.12.61-52.128.1 | SUSE-SU-2018:1221-1, SUSE-SU-2018:1220-1 |
| SLES 12 | kgraft-patch-SLE12_Update_34 | 1-1.3.1 | SUSE-SU-2018:1221-1 |
| SLES 11 SP4 | kernel-ec2 +9 | 3.0.101-108.38.1 | SUSE-SU-2018:1080-1 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP3 | kernel-ec2 +7 | 3.0.101-0.47.106.22.1 | SUSE-SU-2018:1172-1 |
| SLES for SAP 12 SP3 | kernel-azure | 4.4.162-4.19.2 | SUSE-SU-2019:0095-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.156-94.57.1 | SUSE-SU-2018:3003-1 |
| SLES for SAP 12 SP3 | kernel-syms-azure +1 | 4.4.162-4.19.1 | SUSE-SU-2019:0095-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.121-92.95.1 | SUSE-SU-2018:3084-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_25 | 1-3.4.1 | SUSE-SU-2018:3084-1 |
| SLES for SAP 12 SP2 | lttng-modules | 2.7.1-9.6.1 | SUSE-SU-2018:3084-1 |
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.74-60.64.88.1 | SUSE-SU-2018:1220-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_27 | 1-2.3.1 | SUSE-SU-2018:1220-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +8 | 3.0.101-108.38.1 | SUSE-SU-2018:1080-1 |
| SLE Real Time 12 SP3 | kernel-rt +3 | 4.4.162-3.26.1 | SUSE-SU-2018:3659-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-69.24.1 | SUSE-SU-2018:1309-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_18 | 1-4.3.5 | SUSE-SU-2018:3004-1 |
| SUSE OpenStack Cloud 7 | kernel-syms +2 | 4.4.121-92.95.1 | SUSE-SU-2018:3084-1 |
| SUSE OpenStack Cloud 7 | kgraft-patch-SLE12-SP2_Update_25 | 1-3.4.1 | SUSE-SU-2018:3084-1 |
| SUSE OpenStack Cloud 7 | lttng-modules | 2.7.1-9.6.1 | SUSE-SU-2018:3084-1 |
| SUSE OpenStack Cloud 6 | kernel-xen +3 | 3.12.74-60.64.88.1 | SUSE-SU-2018:1220-1 |
| SUSE OpenStack Cloud 6 | kgraft-patch-SLE12-SP1_Update_27 | 1-2.3.1 | SUSE-SU-2018:1220-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | kernel-ec2 +6 | 3.0.101-0.47.106.22.1 | SUSE-SU-2018:1172-1 |
| SUSE Enterprise Storage 4 | kernel-syms +2 | 4.4.121-92.95.1 | SUSE-SU-2018:3084-1 |
| SUSE Enterprise Storage 4 | kgraft-patch-SLE12-SP2_Update_25 | 1-3.4.1 | SUSE-SU-2018:3084-1 |
| SUSE Enterprise Storage 4 | lttng-modules | 2.7.1-9.6.1 | SUSE-SU-2018:3084-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | ffmpeg | 4.0.0-r0 | — |
| Alpine v3.23 | ffmpeg | 4.0.0-r0 | — |
| Alpine v3.22 | ffmpeg +1 | 4.0.0-r0 | — |
| Alpine v3.21 | ffmpeg +1 | 4.0.0-r0 | — |
| Alpine v3.20 | ffmpeg +1 | 4.0.0-r0 | — |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | ffmpeg +1 | 4.0.0-r0 | — |
| Alpine v3.18 | ffmpeg +1 | 4.0.0-r0 | — |
| Alpine v3.17 | ffmpeg +1 | 4.0.0-r0 | — |
| Alpine v3.16 | ffmpeg +1 | 4.0.0-r0 | — |
| Alpine v3.15 | ffmpeg | 4.0.0-r0 | — |
| Alpine v3.14 | ffmpeg | 4.0.0-r0 | — |
| Alpine v3.13 | ffmpeg | 4.0.0-r0 | — |
| Alpine v3.12 | ffmpeg | 4.0.0-r0 | — |
| Alpine v3.11 | ffmpeg | 4.0.0-r0 | — |
| Alpine v3.10 | ffmpeg | 4.0.0-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.26.1.el6uek +1 | 0.4.5-3.el6 | ELSA-2019-4316, ELSA-2018-4268 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.26.1.el7uek +1 | 0.4.5-3.el7 | ELSA-2019-4316, ELSA-2018-4268 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.26.1.el7uek | ELSA-2019-4316, ELSA-2018-4268, ELSA-2018-4265 |
| Oracle Linux 7 | perf +12 | 3.10.0-957.el7 | ELSA-2018-3083 |
Advisories 26
- RHSA-2018:3083 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 8, 2026
- RHSA-2018:3096 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 8, 2026
- RHSA-2018:2948 Red Hat Security Advisory: kernel-alt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- USN-3654-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3654-1 linux, linux-aws, linux-kvm, vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3698-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4188-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4187-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1369-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3697-2 linux-oem vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3656-1 linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2018:1221-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3004-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1080-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3003-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3084-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3659-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1309-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1220-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1172-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-0532 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 11, 2025
- SUSE-SU-2019:0095-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2019-4316 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 4, 2019
- ELSA-2018-4268 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 8, 2018
- ELSA-2018-4265 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 6, 2018
- ELSA-2018-3083 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 5, 2018
References
- RHSA-2018:3083 vendor-advisory
- DSA-4187 vendor-advisory
- USN-3654-1 vendor-advisory
- https://github.com/torvalds/linux/commit/4a491b1ab11ca0556d2fda1ff1301e862a2d44c4
- USN-3697-1 vendor-advisory
- DSA-4188 vendor-advisory
- RHSA-2018:2948 vendor-advisory
- USN-3697-2 vendor-advisory
- 103348 vdb-entry
- USN-3654-2 vendor-advisory
- USN-3698-1 vendor-advisory
- [debian-lts-announce] 20180502 [SECURITY] [DLA 1369-1] linux security update mailing-list
- USN-3656-1 vendor-advisory
- RHSA-2018:3096 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4a491b1ab11ca0556d2fda1ff1301e862a2d44c4
- USN-3698-2 vendor-advisory