Description
Multiple race conditions in the madvise_remove function in mm/madvise.c in the Linux kernel before 3.4.5 allow local users to cause a denial of service (use-after-free and system crash) via vectors involving a (1) munmap or (2) close system call.
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 | 3.2.23-1 | — |
| Debian 13 | linux | 3.2.23-1 | — |
| Debian 12 | linux | 3.2.23-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +15 | 2.6.32-279.14.1.el6 | RHSA-2012:1426 |
| RHEL 5 | kernel +12 | 2.6.18-348.18.1.el5 | RHSA-2013:1292 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +11 | 3.2.33-rt50.66.el6rt | RHSA-2012:1491 |
Advisories 3
- RHSA-2012:1491 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jul 20, 2026
- RHSA-2012:1426 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2013:1292 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Nov 22, 2025
References
- USN-1572-1 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5
- 50732 third-party-advisory
- USN-1567-1 vendor-advisory
- USN-1577-1 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9ab4233dd08036fe34a89c7dc6f47a8bf2eb29eb
- https://bugzilla.redhat.com/show_bug.cgi?id=849734
- https://github.com/torvalds/linux/commit/9ab4233dd08036fe34a89c7dc6f47a8bf2eb29eb
- USN-1529-1 vendor-advisory
- [oss-security] 20120820 Re: CVE Request -- kernel: mm: use-after-free in madvise_remove() mailing-list
- 55151 vdb-entry
- 50633 third-party-advisory
- 55055 third-party-advisory