Description
A typo in Linux kernel 2.6 before 2.6.21-rc6 and 2.4 before 2.4.35 causes RTA_MAX to be used as an array size instead of RTN_MAX, which leads to an "out of bound access" by the (1) dn_fib_props (dn_fib.c, DECNet) and (2) fib_props (fib_semantics.c, IPv4) functions.
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.1-13etch1 | DSA-1363-1, DSA-1356-1 |
| 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 +10 | 2.6.18-8.1.4.el5 | RHSA-2007:0347 |
| RHEL 4 | kernel +10 | 2.6.9-55.0.2.EL | RHSA-2007:0488 |
| RHEL 3 | kernel +8 | 2.4.21-53.EL | RHSA-2007:1049 |
| RHEL 2 | kernel +8 | 2.4.9-e.74 | RHSA-2009:0001, RHSA-2008:0787 |
Advisories 10
- RHSA-2009:0001 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2007:0347 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2007:1049 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2007:0488 Red Hat Security Advisory: kernel security 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-1356-1 linux-2.6 - several vulnerabilities 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-1363-1 linux-2.6 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
- RHSA-2007:0347 vendor-advisory
- USN-464-1 vendor-advisory
- RHSA-2007:1049 vendor-advisory
- 27913 third-party-advisory
- DSA-1363 vendor-advisory
- 26289 third-party-advisory
- http://www.mail-archive.com/git-commits-head%40vger.kernel.org/msg08270.html
- 25838 third-party-advisory
- MDKSA-2007:171 vendor-advisory
- DSA-1504 vendor-advisory
- DSA-1356 vendor-advisory
- 26647 third-party-advisory
- MDKSA-2007:216 vendor-advisory
- oval:org.mitre.oval:def:10764 vdb-entry signature
- http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.35
- 33280 third-party-advisory
- 25288 third-party-advisory
- 26620 third-party-advisory
- kernel-dnfibprops-fibprops-dos(33979) vdb-entry
- MDKSA-2007:196 vendor-advisory
- 25068 third-party-advisory
- DSA-1503 vendor-advisory
- http://support.avaya.com/elmodocs2/security/ASA-2007-287.htm
- 25392 third-party-advisory
- 29058 third-party-advisory
- RHSA-2008:0787 vendor-advisory
- 26450 third-party-advisory
- http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.21-rc6
- 23447 vdb-entry
- ADV-2007-2690 vdb-entry
- RHSA-2007:0488 vendor-advisory
- http://www.mail-archive.com/git-commits-head%40vger.kernel.org/msg08269.html