Description
The strnlen_user function in Linux kernel before 2.6.16 on IBM S/390 can return an incorrect value, which allows local users to cause a denial of service via unknown 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 3.1 | kernel-source-2.6.8 | 2.6.8-16sarge3 | DSA-1103 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4 | kernel +8 | 2.6.9-42.EL | RHSA-2006:0575 |
Advisories 2
- RHSA-2006:0575 Red Hat Security Advisory: Updated kernel packages available for Red Hat Enterprise Linux 4 Update 4 Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1103 kernel-source-2.6.8 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- 18687 vdb-entry
- ADV-2006-2554 vdb-entry
- http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=331c46591414f7f92b1cec048009abe89892ee79
- http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=331c46591414f7f92b1cec048009abe89892ee79
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.16-rc6
- RHSA-2006:0575 vendor-advisory
- DSA-1103 vendor-advisory
- 21465 third-party-advisory
- http://www.mail-archive.com/kernel-svn-changes%40lists.alioth.debian.org/msg01631.html
- oval:org.mitre.oval:def:9909 vdb-entry signature
- http://support.avaya.com/elmodocs2/security/ASA-2006-200.htm
- 22417 third-party-advisory
- 20914 third-party-advisory