Description
Buffer overflow in the bufprint function in capiutil.c in libcapi, as used in Linux kernel 2.6.9 to 2.6.20 and isdn4k-utils, allows local users to cause a denial of service (crash) and possibly gain privileges via a crafted CAPI packet.
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.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +10 | 2.6.18-8.1.10.el5 | RHSA-2007:0705 |
| RHEL 4 | kernel +10 | 2.6.9-55.0.6.EL | RHSA-2007:0774 |
| RHEL 3 | kernel +8 | 2.4.21-51.EL | RHSA-2007:0671 |
| RHEL 2 | kernel +8 | 2.4.9-e.72 | RHSA-2007:0673, RHSA-2007:0672 |
Advisories 5
- RHSA-2007:0705 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2007:0672 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2007:0774 Red Hat Security Advisory: kernel security and bugfix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2007:0671 Red Hat Security Advisory: kernel security and bugfix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2007:0673 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
References
- 34742 vdb-entry
- oval:org.mitre.oval:def:10503 vdb-entry signature
- http://bugzilla.kernel.org/show_bug.cgi?id=8028
- MDKSA-2007:078 vendor-advisory
- RHSA-2007:0673 vendor-advisory
- GLSA-200704-23 vendor-advisory
- 24777 third-party-advisory
- 27528 third-party-advisory
- 26379 third-party-advisory
- 26760 third-party-advisory
- RHSA-2007:0705 vendor-advisory
- 23333 vdb-entry
- RHSA-2007:0672 vendor-advisory
- 26709 third-party-advisory
- 26478 third-party-advisory
- RHSA-2007:0774 vendor-advisory
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=408530
- RHSA-2007:0671 vendor-advisory
- 1018539 vdb-entry
- http://support.avaya.com/elmodocs2/security/ASA-2007-404.htm