Description
A certain Red Hat patch to the be2net implementation in the kernel package before 2.6.32-218.el6 on Red Hat Enterprise Linux (RHEL) 6, when promiscuous mode is enabled, allows remote attackers to cause a denial of service (system crash) via non-member VLAN packets.
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.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +15 | 2.6.32-220.el6 | RHSA-2011:1530 |
| RHEL 5 | kernel +11 | 2.6.18-274.7.1.el5 | RHSA-2011:1386 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6.1 EUS | perf +14 | 2.6.32-131.25.1.el6 | RHSA-2012:0116 |
Advisories 3
- RHSA-2011:1386 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2011:1530 Red Hat Security Advisory: Red Hat Enterprise Linux 6 kernel security, bug fix and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2012:0116 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Nov 22, 2025