Description
The sbni_ioctl function in drivers/net/wan/sbni.c in the wan subsystem in the Linux kernel 2.6.26.3 does not check for the CAP_NET_ADMIN capability before processing a (1) SIOCDEVRESINSTATS, (2) SIOCDEVSHWSTATE, (3) SIOCDEVENSLAVE, or (4) SIOCDEVEMANSIPATE ioctl request, which allows local users to bypass intended capability restrictions.
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.22etch3 | DSA-1653-1 |
| Debian 4.0 | linux-2.6 | 2.6.18.dfsg.1-22etch3 | DSA-1653-1 |
| Debian 4.0 | linux-2.6.24 | 2.6.24-6~etchnhalf.6 | DSA-1655-1 |
| Debian 4.0 | user-mode-linux | 2.6.18-1um-2etch.22etch3 | DSA-1653-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 5
- RHSA-2009:0001 Red Hat Security Advisory: kernel security 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
- DSA-1653-1 fai-kernels linux-2.6 user-mode-linux - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1655-1 linux-2.6.24 - 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
- SUSE-SA:2008:047 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f2455eb176ac87081bbfc9a44b21c7cd2bc1967e
- ADV-2008-2714 vdb-entry
- DSA-1655 vendor-advisory
- 32393 third-party-advisory
- 32237 third-party-advisory
- [oss-security] 20080829 CVE-2008-3525 kernel: missing capability checks in sbni_ioctl() mailing-list
- MDVSA-2008:223 vendor-advisory
- SUSE-SA:2008:052 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.36.7
- USN-659-1 vendor-advisory
- SUSE-SA:2008:053 vendor-advisory
- FEDORA-2008-8929 vendor-advisory
- 32103 third-party-advisory
- 33280 third-party-advisory
- DSA-1653 vendor-advisory
- 32356 third-party-advisory
- 32759 third-party-advisory
- MDVSA-2008:220 vendor-advisory
- 1020969 vdb-entry
- ADV-2008-2511 vdb-entry
- 32370 third-party-advisory
- RHSA-2008:0973 vendor-advisory
- RHSA-2008:0787 vendor-advisory
- SUSE-SA:2008:051 vendor-advisory
- 32386 third-party-advisory
- FEDORA-2008-8980 vendor-advisory
- oval:org.mitre.oval:def:9364 vdb-entry signature
- SUSE-SA:2008:049 vendor-advisory
- SUSE-SR:2008:025 vendor-advisory
- oval:org.mitre.oval:def:5671 vdb-entry signature
- 33201 third-party-advisory
- 32315 third-party-advisory