Description
The veth (aka virtual Ethernet) driver in the Linux kernel before 2.6.34 does not properly manage skbs during congestion, which allows remote attackers to cause a denial of service (system crash) by leveraging lack of skb consumption in conjunction with a double-free error.
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 | 2.6.34-1 | — |
| Debian 13 | linux | 2.6.34-1 | — |
| Debian 12 | linux | 2.6.34-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +15 | 2.6.32-358.11.1.el6 | RHSA-2013:0911 |
Advisories 1
- RHSA-2013:0911 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6ec82562ffc6f297d0de36d65776cff8e5704867
- https://bugzilla.redhat.com/show_bug.cgi?id=957705
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34
- [oss-security] 20130429 Re: CVE request -- Linux kernel: veth: double-free in case of congestion mailing-list
- https://github.com/torvalds/linux/commit/6ec82562ffc6f297d0de36d65776cff8e5704867
- https://support.f5.com/csp/article/K39655464