Description
Memory leak in the icmp_push_reply function in Linux 2.6 before 2.6.12.6 and 2.6.13 allows remote attackers to cause a denial of service (memory consumption) via a large number of crafted packets that cause the ip_append_data function to fail, aka "DST leak in icmp_push_reply."
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 3.1 | kernel-source-2.4.27 | 2.4.27-10sarge2 | DSA-1018-1 |
| Debian 3.1 | kernel-source-2.6.8 | 2.6.8-16sarge2 | DSA-1017-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4 | kernel +6 | 2.6.9-22.0.2.EL | RHSA-2006:0101 |
| RHEL 3 | kernel +8 | 2.4.21-37.0.1.EL | RHSA-2006:0140 |
Advisories 4
- RHSA-2006:0140 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2006:0101 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1017-1 kernel-source-2.6.8 - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1018-1 kernel-source-2.4.27 - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- RHSA-2006:0140 vendor-advisory
- 19038 third-party-advisory
- [linux-kernel] 20050817 [PATCH] fix dst_entry leak in icmp_push_reply() mailing-list
- [linux-kernel] 20050826 [PATCH 4/7] [IPV4]: Fix DST leak in icmp_push_reply() mailing-list
- 19369 third-party-advisory
- 18203 third-party-advisory
- RHSA-2006:0101 vendor-advisory
- 16044 vdb-entry
- DSA-1018 vendor-advisory
- http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cb94c62c252796f42bb83fe40960d12f3ea5a82a
- oval:org.mitre.oval:def:11346 vdb-entry signature
- 18510 third-party-advisory
- SUSE-SA:2006:012 vendor-advisory
- MDKSA-2006:072 vendor-advisory
- DSA-1017 vendor-advisory
- http://www.kernel.org/git/?p=linux/kernel/git/chrisw/stable-queue.git%3Ba=blob%3Bh=1cf41a8a8db3080c9a9243e77c5c447c8e694f87%3Bhb=9c5fcb99af7c157be45e9d53aeb857ded5211fcd%3Bf=2.6.12.6/fix-dst-leak-in-icmp_push_reply.patch
- 19374 third-party-advisory
- [linux-kernel] 20050818 Re: [PATCH] fix dst_entry leak in icmp_push_reply() mailing-list
- USN-231-1 vendor-advisory
- 18562 third-party-advisory