Description
The sg implementation in the Linux kernel through 4.9 does not properly restrict write operations in situations where the KERNEL_DS option is set, which allows local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device, related to block/bsg.c and drivers/scsi/sg.c. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-9576.
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 | 4.8.15-2 | — |
| Debian 13 | linux | 4.8.15-2 | — |
| Debian 12 | linux | 4.8.15-2 | — |
| Debian 7 | linux | 3.2.84-1 | DLA-772-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-riscv +6 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +4 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +4 | No fix yet | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-63.84 | USN-3208-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1003.12 | — |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1044.51 | — |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1047.51 | USN-3208-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-125.174 | USN-3360-1 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-63.84~14.04.2 | USN-3208-2 |
| 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 | 3.10.0-693.rt56.617.el7 | RHSA-2017:2077 |
| RHEL 7 | perf +17 | 3.10.0-693.el7 | RHSA-2017:1842 |
| RHEL 6 | perf +16 | 2.6.32-696.el6 | RHSA-2017:0817 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-693.2.1.rt56.585.el6rt | RHSA-2017:2669 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | kernel-docs | 3.12.69-60.64.29.3 | SUSE-SU-2017:0464-1 |
| SLES 12 SP1 | kernel-xen +4 | 3.12.69-60.64.29.1 | SUSE-SU-2017:0464-1 |
| SLES 12 | kernel-ec2 +4 | 3.12.61-52.66.1 | SUSE-SU-2017:0471-1, SUSE-SU-2017:0464-1 |
| SLES 12 | kgraft-patch-SLE12_Update_19 | 1-2.1 | SUSE-SU-2017:0471-1 |
| SLES 11 SP4 | kernel-docs | 3.0.101-94.2 | SUSE-SU-2017:0437-1 |
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-94.1 | SUSE-SU-2017:0437-1 |
| SLES 11 SP3 | kernel-ec2 +7 | 3.0.101-0.47.96.1 | SUSE-SU-2017:0494-1 |
| SLES 11 SP2 | kernel-ec2 +6 | 3.0.101-0.7.53.1 | SUSE-SU-2017:0333-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.69-60.64.29.1 | SUSE-SU-2017:0464-1 |
| SLES for SAP 12 | kernel-xen +3 | 3.12.61-52.66.1 | SUSE-SU-2017:0471-1 |
| SLES for SAP 12 | kgraft-patch-SLE12_Update_19 | 1-2.1 | SUSE-SU-2017:0471-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +8 | 3.0.101-94.1 | SUSE-SU-2017:0437-1 |
| SLE Real Time 12 SP1 | kernel-rt +5 | 3.12.69-60.30.1 | SUSE-SU-2017:0407-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-68.1 | SUSE-SU-2017:1102-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_12 | 1-4.1 | SUSE-SU-2017:0464-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP2_Update_0 | 3-8.2 | SUSE-SU-2017:0227-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP2_Update_1 | 3-2.1 | SUSE-SU-2017:0228-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP2_Update_2 +2 | 2-2.1 | SUSE-SU-2017:0307-1, SUSE-SU-2017:0293-1, SUSE-SU-2017:0232-1 |
| SUSE OpenStack Cloud 5 | kernel-ec2 +6 | 3.0.101-0.47.96.1 | SUSE-SU-2017:0494-1 |
| SUSE Manager Proxy 2.1 | kernel-ec2 +6 | 3.0.101-0.47.96.1 | SUSE-SU-2017:0494-1 |
| SUSE Manager 2.1 | kernel-ec2 +6 | 3.0.101-0.47.96.1 | SUSE-SU-2017:0494-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | kernel-ec2 +6 | 3.0.101-0.47.96.1 | SUSE-SU-2017:0494-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.17.4.el6uek | 0.4.5-3.el6 | ELSA-2017-3534 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.17.4.el7uek | 0.4.5-3.el7 | ELSA-2017-3534 |
| Oracle Linux 7 | dtrace-modules-4.1.12-61.1.33.el6uek | 0.5.3-2.el6 | ELSA-2017-3533 |
| Oracle Linux 7 | dtrace-modules-4.1.12-61.1.33.el7uek | 0.5.3-2.el7 | ELSA-2017-3533 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.17.4.el7uek | ELSA-2017-3534, ELSA-2017-3533 |
| Oracle Linux 7 | perf +11 | 3.10.0-693.el7 | ELSA-2017-1842 |
Advisories 23
- RHSA-2017:2669 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2017:2077 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2017:1842 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2017:0817 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3360-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3208-1 linux, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-772-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3208-2 linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2017:1102-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0228-1 Security update for Linux Kernel Live Patch 1 for SLE 12 SP2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0494-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0471-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0227-1 Security update for Linux Kernel Live Patch 0 for SLE 12 SP2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0232-1 Security update for Linux Kernel Live Patch 3 for SLE 12 SP2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0464-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0407-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0333-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0307-1 Security update for Linux Kernel Live Patch 4 for SLE 12 SP2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0293-1 Security update for Linux Kernel Live Patch 2 for SLE 12 SP2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0437-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2017-1842 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 7, 2017
- ELSA-2017-3533 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 31, 2017
- ELSA-2017-3534 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 31, 2017
References
- 1037538 vdb-entry
- RHSA-2017:2669 vendor-advisory
- 95169 vdb-entry
- RHSA-2017:0817 vendor-advisory
- [oss-security] 20161230 Re: Linux Kernel use-after-free in SCSI generic device interface mailing-list
- RHSA-2017:2077 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=128394eff343fc6d2f32172f03e24829539c5835
- RHSA-2017:1842 vendor-advisory
- https://github.com/torvalds/linux/commit/128394eff343fc6d2f32172f03e24829539c5835