Description
drivers/vhost/net.c in the Linux kernel before 3.13.10, when mergeable buffers are disabled, does not properly validate packet lengths, which allows guest OS users to cause a denial of service (memory corruption and host OS crash) or possibly gain privileges on the host OS via crafted packets, related to the handle_rx and get_rx_bufs functions.
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 | 3.13.10-1 | — |
| Debian 13 | linux | 3.13.10-1 | — |
| Debian 12 | linux | 3.13.10-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-27.50 | USN-2226-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +15 | 2.6.32-431.17.1.el6 | RHSA-2014:0475 |
| RHEL 6 | rhev-hypervisor6 | 6.5-20140603.1.el6ev | RHSA-2014:0629 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6.4 EUS | perf +14 | 2.6.32-358.44.1.el6 | RHSA-2014:0634 |
| RHEL 6.3 EUS | perf +15 | 2.6.32-279.46.1.el6 | RHSA-2014:0593 |
Advisories 5
- RHSA-2014:0634 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0629 Red Hat Security Advisory: rhev-hypervisor6 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0593 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0475 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- USN-2226-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
References
- 66678 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1064440
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.10
- https://github.com/torvalds/linux/commit/d8316f3991d207fe32881a9ac20241be8fa2bad0
- 59386 third-party-advisory
- 59599 third-party-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d8316f3991d207fe32881a9ac20241be8fa2bad0