Description
Memory leak in the ipip6_rcv function in net/ipv6/sit.c in the Linux kernel 2.4 before 2.4.36.5 and 2.6 before 2.6.25.3 allows remote attackers to cause a denial of service (memory consumption) via network traffic to a Simple Internet Transition (SIT) tunnel interface, related to the pskb_may_pull and kfree_skb functions, and management of an skb reference count.
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 4.0 | fai-kernels | 1.17+etch.18etch5 | DSA-1588-1 |
| Debian 4.0 | linux-2.6 | 2.6.18.dfsg.1-18etch5 | DSA-1588-1 |
| Debian 4.0 | user-mode-linux | 2.6.18-1um-2etch.18etch5 | DSA-1588-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +12 | 2.6.18-92.1.10.el5 | RHSA-2008:0612 |
| RHEL 4 | kernel +10 | 2.6.9-67.0.22.EL | RHSA-2008:0607 |
| RHEL 3 | kernel +8 | 2.4.21-58.EL | RHSA-2008:0973 |
| RHEL 2 | kernel +8 | 2.4.9-e.74 | RHSA-2009:0001, RHSA-2008:0787 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 1 | kernel-rt +9 | 2.6.24.7-74.el5rt | RHSA-2008:0585 |
Advisories 7
- RHSA-2008:0585 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2009:0001 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2008:0612 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2008:0973 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2008:0607 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1588-1 fai-kernels linux-2.6 user-mode-linux - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- RHSA-2008:0787 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
References
- 1020118 vdb-entry
- 30276 third-party-advisory
- 30962 third-party-advisory
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.3
- http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0169
- 31198 third-party-advisory
- 30368 third-party-advisory
- MDVSA-2008:167 vendor-advisory
- 31341 third-party-advisory
- http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.36.5
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.3
- ADV-2008-1716 vdb-entry
- RHSA-2008:0607 vendor-advisory
- 30499 third-party-advisory
- linux-kernel-ipip6rcv-dos(42451) vdb-entry
- 30198 third-party-advisory
- DSA-1588 vendor-advisory
- 33280 third-party-advisory
- 31689 third-party-advisory
- 29235 vdb-entry
- RHSA-2008:0585 vendor-advisory
- oval:org.mitre.oval:def:6503 vdb-entry signature
- oval:org.mitre.oval:def:11038 vdb-entry signature
- [linux-kernel] 20080509 Re: When should kfree_skb be used? mailing-list
- 30241 third-party-advisory
- MDVSA-2008:174 vendor-advisory
- 31107 third-party-advisory
- RHSA-2008:0973 vendor-advisory
- http://support.avaya.com/elmodocs2/security/ASA-2008-362.htm
- RHSA-2008:0612 vendor-advisory
- 31628 third-party-advisory
- USN-625-1 vendor-advisory
- FEDORA-2008-3949 vendor-advisory
- RHSA-2008:0787 vendor-advisory
- ADV-2008-1543 vdb-entry
- SUSE-SA:2008:030 vendor-advisory
- 30818 third-party-advisory
- 33201 third-party-advisory
- SUSE-SA:2008:032 vendor-advisory