Description
The skb_gro_header_slow function in include/linux/netdevice.h in the Linux kernel before 2.6.39.4, when Generic Receive Offload (GRO) is enabled, resets certain fields in incorrect situations, which allows remote attackers to cause a denial of service (system crash) via crafted network traffic.
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 6.0 | linux-2.6 | 2.6.32-35squeeze1 | DSA-2303-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +14 | 2.6.32-131.17.1.el6 | RHSA-2011:1350 |
| RHEL 5 | kernel +12 | 2.6.18-238.27.1.el5 | RHSA-2011:1386, RHSA-2011:1321 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 2.6.33.9-rt31.79.el6rt | RHSA-2012:0010 |
Advisories 5
- RHSA-2012:0010 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2011:1386 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2011:1350 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2303-1 linux-2.6 - several issues Debian Security (DSA / DLA) · Mar 9, 2026
- RHSA-2011:1321 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Nov 22, 2025
References
- https://bugzilla.redhat.com/show_bug.cgi?id=726552
- RHSA-2011:1321 vendor-advisory
- [oss-security] 20110729 Re: CVE request: kernel: gro: Only reset frag0 when skb can be pulled mailing-list
- 1025876 vdb-entry
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=17dd759c67f21e34f2156abcf415e1f60605a188
- [oss-security] 20110728 CVE request: kernel: gro: Only reset frag0 when skb can be pulled mailing-list
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4
- 48929 vdb-entry
- HPSBGN02970 vendor-advisory