Description
It was found that the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation before 2.6.22.17 used the IPv4-only inet_sk_rebuild_header() function for both IPv4 and IPv6 DCCP connections, which could result in memory corruptions. A remote attacker could use this flaw to crash the system.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | kernel: | 2.6.22.17 | — |
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 | 2.6.18-419.el5 | RHSA-2017:0323 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Mission Critical 5 | kernel +10 | 2.6.18-238.58.1.el5 | RHSA-2017:0347 |
| RHEL 5.9 AUS | kernel +10 | 2.6.18-348.33.1.el5 | RHSA-2017:0346 |
Advisories 3
- RHSA-2017:0347 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2017:0346 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2017:0323 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jul 1, 2026
References
- RHSA-2017:0323 vendor-advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f53dc67c5e7babafe239b93a11678b0e05bead51
- RHSA-2017:0347 vendor-advisory
- 1037909 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2634
- RHSA-2017:0346 vendor-advisory
- 96529 vdb-entry