Description
net/dcb/dcbnl.c in the Linux kernel before 3.8.4 does not initialize certain structures, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.
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 14 | linux | 3.2.41-2 | — |
| Debian 13 | linux | 3.2.41-2 | — |
| Debian 12 | linux | 3.2.41-2 | — |
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze3 | DSA-2668-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +15 | 2.6.32-358.14.1.el6 | RHSA-2013:1051 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenStack 3 | perf +9 | 2.6.32-358.114.1.openstack.el6 | RHSA-2013:1080 |
| Red Hat MRG 2 | kernel-rt +11 | 3.6.11.2-rt33.39.el6rt | RHSA-2013:0829 |
Advisories 4
- RHSA-2013:0829 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2013:1051 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2668-1 linux-2.6 - several Debian Security (DSA / DLA) · Mar 9, 2026
- RHSA-2013:1080 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Nov 22, 2025
References
- openSUSE-SU-2013:1187 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=29cd8ae0e1a39e239a3a7b67da1986add1199fc0
- USN-1812-1 vendor-advisory
- MDVSA-2013:176 vendor-advisory
- USN-1829-1 vendor-advisory
- RHSA-2013:1051 vendor-advisory
- USN-1809-1 vendor-advisory
- https://github.com/torvalds/linux/commit/29cd8ae0e1a39e239a3a7b67da1986add1199fc0
- USN-1814-1 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=923652
- openSUSE-SU-2013:1971 vendor-advisory
- USN-1813-1 vendor-advisory
- [oss-security] 20130320 Re: Linux kernel: net - three info leaks in rtnl mailing-list
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4
- USN-1811-1 vendor-advisory