Description
arch/x86/kernel/entry_64.S in the Linux kernel before 3.19.2 does not prevent the TS_COMPAT flag from reaching a user-mode task, which might allow local users to bypass the seccomp or audit protection mechanism via a crafted application that uses the (1) fork or (2) close system call, as demonstrated by an attack against seccomp before 3.16.
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 | 3.16.7-ckt9-1 | — |
| Debian 13 | linux | 3.16.7-ckt9-1 | — |
| Debian 12 | linux | 3.16.7-ckt9-1 | — |
| Debian 8 | linux | 3.16.7-ckt9-3~deb8u1 | DSA-3237-1 |
| Debian 7 | linux | 3.2.68-1+deb7u1 | DSA-3237-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze12 | DLA-246-1 |
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 +3 | No fix yet | — |
| Ubuntu 14.04 LTS | linux | 3.13.0-53.88 | USN-2614-1 |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-36.48~14.04.1 | USN-2589-1 |
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-kdump +4 | 3.10.0-229.7.2.el7 | RHSA-2015:1137 |
| RHEL 7 | kernel-rt +7 | 3.10.0-229.7.2.rt56.141.6.el7_1 | RHSA-2015:1139 |
| RHEL 7 | perf +13 | 3.10.0-229.7.2.ael7b | RHSA-2015:1137 |
| RHEL 6 | perf +16 | 2.6.32-504.30.3.el6 | RHSA-2015:1221 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-229.rt56.153.el6rt | RHSA-2015:1138 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | kernel-docs +1 | 3.12.43-52.6.2 | SUSE-SU-2015:1071-1 |
| SLES 12 | kernel-ec2 +4 | 3.12.43-52.6.1 | SUSE-SU-2015:1071-1 |
| SLES 11 SP4 | kernel-docs | 3.0.101-65.3 | SUSE-SU-2015:1678-1 |
| SLES 11 SP4 | kernel-ec2 +7 | 3.0.101-65.1 | SUSE-SU-2015:1678-1 |
| SLES 11 SP3 | kernel-ec2 +8 | 3.0.101-0.47.67.2 | SUSE-SU-2015:1611-1 |
| SLES 11 SP2 | kernel-ec2 +6 | 3.0.101-0.7.37.1 | SUSE-SU-2015:1478-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | kernel-xen +3 | 3.12.43-52.6.1 | SUSE-SU-2015:1071-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +7 | 3.0.101-65.1 | SUSE-SU-2015:1678-1 |
| SLES for SAP 11 SP3 | kernel-ec2 +8 | 3.0.101-0.47.67.2 | SUSE-SU-2015:1611-1 |
| SLE Real Time 11 SP3 | kernel-rt +3 | 3.0.101.rt130-0.33.40.1 | SUSE-SU-2015:1592-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_5 | 1-2.3 | SUSE-SU-2015:1071-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-68.3.3.el6uek | 0.4.3-4.el6 | ELSA-2015-3045 |
| Oracle Linux 7 | dtrace-modules-3.8.13-68.3.3.el7uek | 0.4.3-4.el7 | ELSA-2015-3045 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-68.3.3.el7uek | ELSA-2015-3045 |
| Oracle Linux 7 | perf +11 | 3.10.0-229.7.2.el7 | ELSA-2015-1137 |
Advisories 15
- RHSA-2015:1221 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:1138 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:1139 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:1137 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-2614-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-246-1 linux-2.6 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3237-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2589-1 linux-lts-utopic vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2015:1478-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1071-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1678-1 Security update for kernel-source SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1611-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1592-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2015-3045 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 24, 2015
- ELSA-2015-1137 Important: kernel security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 23, 2015
References
- USN-2631-1 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.2
- USN-2632-1 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- SUSE-SU-2015:1611 vendor-advisory
- 1032413 vdb-entry
- DSA-3237 vendor-advisory
- RHSA-2015:1138 vendor-advisory
- https://github.com/torvalds/linux/commit/956421fbb74c3a6261903f3836c0740187cf038b
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=956421fbb74c3a6261903f3836c0740187cf038b
- SUSE-SU-2015:1478 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1208598
- RHSA-2015:1137 vendor-advisory
- SUSE-SU-2015:1592 vendor-advisory
- RHSA-2015:1221 vendor-advisory
- [oss-security] 20150401 CVE Request: Linux mishandles int80 fork from 64-bit tasks mailing-list