Description
Race condition in the audit_log_single_execve_arg function in kernel/auditsc.c in the Linux kernel through 4.7 allows local users to bypass intended character-set restrictions or disrupt system-call auditing by changing a certain string, aka a "double fetch" vulnerability.
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 | 4.7.2-1 | — |
| Debian 13 | linux | 4.7.2-1 | — |
| Debian 12 | linux | 4.7.2-1 | — |
| Debian 8 | linux | 3.16.36-1+deb8u1 | DSA-3659-1 |
| Debian 7 | linux | 3.2.81-2 | DLA-609-1 |
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 16.04 LTS | linux | 4.4.0-38.57 | USN-3084-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1023.29 | USN-3084-3 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1026.29 | USN-3084-4 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-98.145 | USN-3098-1 |
| Ubuntu 14.04 LTS | linux-lts-vivid | 3.19.0-71.79~14.04.1 | — |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-38.57~14.04.1 | USN-3084-2 |
| 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 | 3.10.0-514.rt56.420.el7 | RHSA-2016:2584 |
| RHEL 7 | perf +18 | 3.10.0-514.el7 | RHSA-2016:2574 |
| RHEL 6 | perf +16 | 2.6.32-642.15.1.el6 | RHSA-2017:0307 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.14.2.el6uek | 0.4.5-3.el6 | ELSA-2016-3645 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.14.2.el7uek | 0.4.5-3.el7 | ELSA-2016-3645 |
| Oracle Linux 7 | dtrace-modules-4.1.12-61.1.19.el6uek | 0.5.3-2.el6 | ELSA-2016-3644 |
| Oracle Linux 7 | dtrace-modules-4.1.12-61.1.19.el7uek | 0.5.3-2.el7 | ELSA-2016-3644 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.14.2.el7uek | ELSA-2016-3645, ELSA-2016-3644 |
| Oracle Linux 7 | perf +11 | 3.10.0-514.el7 | ELSA-2016-2574 |
Advisories 13
- RHSA-2017:0307 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:2584 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:2574 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3084-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3098-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-609-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3659-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3084-2 linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3084-3 linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3084-4 linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- ELSA-2016-3645 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 20, 2016
- ELSA-2016-3644 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 20, 2016
- ELSA-2016-2574 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 9, 2016
References
- 91558 vdb-entry
- https://github.com/linux-audit/audit-kernel/issues/18
- RHSA-2016:2584 vendor-advisory
- RHSA-2016:2574 vendor-advisory
- https://github.com/torvalds/linux/commit/43761473c254b45883a64441dd0bc85a42f3645c
- https://bugzilla.kernel.org/show_bug.cgi?id=120681
- https://bugzilla.redhat.com/show_bug.cgi?id=1353533
- https://source.android.com/security/bulletin/2016-11-01.html
- 20160704 [CVE-2016-6136] Double-Fetch Vulnerability in Linux-4.6/kernel/auditsc.c mailing-list
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=43761473c254b45883a64441dd0bc85a42f3645c
- RHSA-2017:0307 vendor-advisory