Description
The tcp_read_sock function in net/ipv4/tcp.c in the Linux kernel before 2.6.34 does not properly manage skb consumption, which allows local users to cause a denial of service (system crash) via a crafted splice system call for a TCP socket.
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 | 2.6.35-1~experimental.1 | — |
| Debian 13 | linux | 2.6.35-1~experimental.1 | — |
| Debian 12 | linux | 2.6.35-1~experimental.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +15 | 2.6.32-358.14.1.el6 | RHSA-2013:1051 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenStack 3 | perf +9 | 2.6.32-358.114.1.openstack.el6 | RHSA-2013:1080 |
Advisories 2
- RHSA-2013:1051 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2013:1080 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Nov 22, 2025
References
- https://github.com/torvalds/linux/commit/baff42ab1494528907bf4d5870359e31711746ae
- [oss-security] 20130529 Re: CVE request: Linux kernel: net: oops from tcp_collapse() when using splice(2) mailing-list
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34
- RHSA-2013:1051 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=baff42ab1494528907bf4d5870359e31711746ae
- https://bugzilla.redhat.com/show_bug.cgi?id=968484