Description
Use-after-free vulnerability in the shmem_remount_fs function in mm/shmem.c in the Linux kernel before 3.7.10 allows local users to gain privileges or cause a denial of service (system crash) by remounting a tmpfs filesystem without specifying a required mpol (aka mempolicy) mount option.
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 | 3.2.41-1 | — |
| Debian 13 | linux | 3.2.41-1 | — |
| Debian 12 | linux | 3.2.41-1 | — |
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze3 | DSA-2668-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +15 | 2.6.32-358.6.1.el6 | RHSA-2013:0744 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6.3 EUS | perf +15 | 2.6.32-279.31.1.el6 | RHSA-2013:0928 |
| RHEL 6.2 EUS | perf +15 | 2.6.32-220.38.1.el6 | RHSA-2013:0882 |
| Red Hat MRG 2 | kernel-rt +11 | 3.6.11.2-rt33.39.el6rt | RHSA-2013:0829 |
Advisories 5
- RHSA-2013:0928 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2013:0882 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2013:0829 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2013:0744 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2668-1 linux-2.6 - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- openSUSE-SU-2013:0847 vendor-advisory
- USN-1796-1 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=915592
- RHSA-2013:0882 vendor-advisory
- MDVSA-2013:176 vendor-advisory
- USN-1797-1 vendor-advisory
- USN-1788-1 vendor-advisory
- USN-1793-1 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5f00110f7273f9ff04ac69a5f85bb535a4fd0987
- RHSA-2013:0928 vendor-advisory
- https://github.com/torvalds/linux/commit/5f00110f7273f9ff04ac69a5f85bb535a4fd0987
- USN-1792-1 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.10
- USN-1794-1 vendor-advisory
- RHSA-2013:0744 vendor-advisory
- USN-1795-1 vendor-advisory
- openSUSE-SU-2013:0925 vendor-advisory
- USN-1787-1 vendor-advisory
- USN-1798-1 vendor-advisory
- [oss-security] 20130225 Re: kernel: tmpfs use-after-free mailing-list