Description
Buffer overflow in the isdn_net_setcfg function in isdn_net.c in Linux kernel 2.6.23 allows local users to have an unknown impact via a crafted argument to the isdn_ioctl function.
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 | fai-kernels | 1.17+etch.13etch6 | DSA-1436-1 |
| Debian 4.0 | linux-2.6 | 2.6.18.dfsg.1-13etch6 | DSA-1436-1 |
| Debian 4.0 | user-mode-linux | 2.6.18-1um-2etch.13etch6 | DSA-1436-1 |
| Debian 3.1 | fai-kernels | 1.9.1sarge8 | DSA-1504-1 |
| Debian 3.1 | hostap-modules-i386 | 1:0.3.7-1sarge3 | DSA-1503-1 |
| Debian 3.1 | i2c | 1:2.9.1-1sarge2 | DSA-1503-1 |
| Debian 3.1 | kernel-image-2.4.27-arm +1 | 2.4.27-2sarge6 | DSA-1503-1 |
| Debian 3.1 | kernel-image-2.4.27-m68k | 2.4.27-3sarge6 | DSA-1503-1 |
| Debian 3.1 | kernel-image-2.4.27-sparc | 2.4.27-9sarge6 | DSA-1503-1 |
| 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-image-speakup-i386 | 2.4.27-1.1sarge5 | DSA-1503-1 |
| Debian 3.1 | kernel-latest-2.4-alpha | 101sarge3 | DSA-1503-1 |
| Debian 3.1 | kernel-latest-2.4-i386 | 101sarge2 | DSA-1503-1 |
| Debian 3.1 | kernel-latest-2.4-s390 | 2.4.27-1sarge2 | DSA-1503-1 |
| Debian 3.1 | kernel-latest-2.4-sparc | 42sarge3 | DSA-1503-1 |
| Debian 3.1 | kernel-patch-2.4.27-mips | 2.4.27-10.sarge4.040815-3 | DSA-1503-1 |
| Debian 3.1 | kernel-patch-powerpc-2.6.8 | 2.6.8-13sarge1 | DSA-1504-1 |
| Debian 3.1 | kernel-source-2.4.27 +4 | 2.4.27-10sarge6 | DSA-1503-2, DSA-1503-1 |
| Debian 3.1 | kernel-source-2.6.8 +3 | 2.6.8-17sarge1 | DSA-1504-1 |
| Debian 3.1 | mindi-kernel | 2.4.27-2sarge5 | DSA-1503-1 |
| Debian 3.1 | pcmcia-modules-2.4.27-i386 | 3.2.5+2sarge2 | DSA-1503-1 |
| Debian 3.1 | systemimager | 3.2.3-6sarge5 | DSA-1503-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +12 | 2.6.18-53.1.14.el5 | RHSA-2008:0154 |
| RHEL 4 | kernel +10 | 2.6.9-67.0.4.EL | RHSA-2008:0055 |
| RHEL 3 | kernel +8 | 2.4.21-58.EL | RHSA-2008:0973 |
| RHEL 2 | kernel +8 | 2.4.9-e.74 | RHSA-2009:0001, RHSA-2008:0787 |
Advisories 9
- RHSA-2009:0001 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2008:0154 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2008:0973 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2008:0055 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1503-2 kernel-source-2.4.27 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1503-1 kernelimage-2.4.27 - several issues Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1504-1 kernel-image-2.6.8 - several issues Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1436-1 linux-2.6 fai-kernels user-mode-linux - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- RHSA-2008:0787 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
References
- http://bugzilla.kernel.org/show_bug.cgi?id=9416
- 28806 third-party-advisory
- 26605 vdb-entry
- RHSA-2008:0154 vendor-advisory
- DSA-1436 vendor-advisory
- ADV-2007-4046 vdb-entry
- 28141 third-party-advisory
- 28706 third-party-advisory
- MDVSA-2008:112 vendor-advisory
- DSA-1504 vendor-advisory
- MDVSA-2008:008 vendor-advisory
- 27912 third-party-advisory
- oval:org.mitre.oval:def:9846 vdb-entry signature
- 33280 third-party-advisory
- 29236 third-party-advisory
- SUSE-SA:2007:064 vendor-advisory
- SUSE-SA:2008:006 vendor-advisory
- DSA-1503 vendor-advisory
- 27842 third-party-advisory
- 28748 third-party-advisory
- USN-574-1 vendor-advisory
- 29058 third-party-advisory
- RHSA-2008:0973 vendor-advisory
- 28971 third-party-advisory
- RHSA-2008:0787 vendor-advisory
- USN-578-1 vendor-advisory
- RHSA-2008:0055 vendor-advisory
- oval:org.mitre.oval:def:6514 vdb-entry signature
- 33201 third-party-advisory