Description
The (1) hugetlb_vmtruncate_list and (2) hugetlb_vmtruncate functions in fs/hugetlbfs/inode.c in the Linux kernel before 2.6.19-rc4 perform certain prio_tree calculations using HPAGE_SIZE instead of PAGE_SIZE units, which allows local users to cause a denial of service (panic) via unspecified vectors.
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 4.0 | linux-2.6 | 2.6.18.dfsg.1-13etch4 | DSA-1381-2 |
| Debian 3.1 | fai-kernels | 1.9.1sarge8 | DSA-1504-1 |
| Debian 3.1 | kernel-image-2.6.8-hppa | 2.6.8-7sarge1 | DSA-1504-1 |
| Debian 3.1 | kernel-image-2.6.8-ia64 | 2.6.8-15sarge1 | DSA-1504-1 |
| Debian 3.1 | kernel-image-2.6.8-m68k | 2.6.8-5sarge1 | DSA-1504-1 |
| Debian 3.1 | kernel-image-2.6.8-s390 | 2.6.8-6sarge1 | DSA-1504-1 |
| Debian 3.1 | kernel-image-2.6.8-sparc | 2.6.8-16sarge1 | DSA-1504-1 |
| Debian 3.1 | kernel-patch-powerpc-2.6.8 | 2.6.8-13sarge1 | DSA-1504-1 |
| Debian 3.1 | kernel-source-2.6.8 +3 | 2.6.8-17sarge1 | DSA-1504-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +9 | 2.6.18-8.1.15.el5 | RHSA-2007:0940 |
Advisories 3
- RHSA-2007:0940 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1504-1 kernel-image-2.6.8 - several issues Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1381-2 linux-2.6 Debian Security (DSA / DLA) · Mar 9, 2026
References
- RHSA-2007:0940 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.19-rc4
- 27322 third-party-advisory
- 26994 third-party-advisory
- DSA-1504 vendor-advisory
- MDVSA-2008:008 vendor-advisory
- MDKSA-2007:216 vendor-advisory
- USN-558-1 vendor-advisory
- DSA-1381 vendor-advisory
- MDVSA-2008:105 vendor-advisory
- http://tree.celinuxforum.org/gitstat/commit-detail.php?commit=856fc29505556cf263f3dcda2533cf3766c14ab6
- 25904 vdb-entry
- 29058 third-party-advisory
- 28971 third-party-advisory
- 28170 third-party-advisory
- kernel-hugetlbfs-dos(36925) vdb-entry
- USN-578-1 vendor-advisory
- oval:org.mitre.oval:def:10451 vdb-entry signature