Description
arch/x86/include/asm/pgtable.h in the Linux kernel before 3.6.2, when transparent huge pages are used, does not properly support PROT_NONE memory regions, which allows local users to cause a denial of service (system crash) via a crafted application.
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 | 3.2.32-1 | — |
| Debian 13 | linux | 3.2.32-1 | — |
| Debian 12 | linux | 3.2.32-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +15 | 2.6.32-358.el6 | RHSA-2013:0496 |
Advisories 1
- RHSA-2013:0496 Red Hat Security Advisory: Red Hat Enterprise Linux 6 kernel update Red Hat Security Advisories (RHSA) · Jun 28, 2026
References
- RHSA-2013:0496 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=027ef6c87853b0a9df53175063028edb4950d476
- https://bugzilla.redhat.com/show_bug.cgi?id=912898
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.6.2
- https://github.com/torvalds/linux/commit/027ef6c87853b0a9df53175063028edb4950d476
- [oss-security] 20130219 Re: CVE request -- Linux kernel: mm: thp: pmd_present and PROT_NONE local DoS mailing-list