Description
Double free vulnerability in the xfrm6_tunnel_rcv function in net/ipv6/xfrm6_tunnel.c in the Linux kernel before 2.6.22, when the xfrm6_tunnel module is enabled, allows remote attackers to cause a denial of service (panic) via crafted IPv6 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 5 | kernel +12 | 2.6.18-308.4.1.el5 | RHSA-2012:0480 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5.6 EUS | kernel +12 | 2.6.18-238.39.1.el5 | RHSA-2012:0720 |
Advisories 2
- RHSA-2012:0720 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:0480 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=d0772b70faaf8e9f2013b6c4273d94d5eac8047a
- https://bugzilla.redhat.com/show_bug.cgi?id=752304
- 1026930 vdb-entry
- 53139 vdb-entry
- RHSA-2012:0488 vendor-advisory
- 48881 third-party-advisory
- SSRT100852 vendor-advisory
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22
- https://github.com/torvalds/linux/commit/d0772b70faaf8e9f2013b6c4273d94d5eac8047a