Description
net/ipv6/netfilter/nf_conntrack_reasm.c in the Linux kernel before 2.6.34, when the nf_conntrack_ipv6 module is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via certain types of fragmented 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.
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 | 2.6.32-279.1.1.el6 | RHSA-2012:1064 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6.2 EUS | perf +14 | 2.6.32-220.24.1.el6 | RHSA-2012:1129 |
| RHEL 6.1 EUS | perf +14 | 2.6.32-131.30.1.el6 | RHSA-2012:1148 |
| RHEL 6.0 EUS | perf +14 | 2.6.32-71.40.1.el6 | RHSA-2012:1114 |
Advisories 4
- RHSA-2012:1148 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:1114 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:1129 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:1064 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
References
- https://bugzilla.redhat.com/show_bug.cgi?id=833402
- 54367 vdb-entry
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34
- 1027235 vdb-entry
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9e2dcf72023d1447f09c47d77c99b0c49659e5ce
- https://github.com/torvalds/linux/commit/9e2dcf72023d1447f09c47d77c99b0c49659e5ce
- RHSA-2012:1064 vendor-advisory
- 49928 third-party-advisory
- RHSA-2012:1148 vendor-advisory