Description
The main function in tools/hv/hv_kvp_daemon.c in hypervkvpd, as distributed in the Linux kernel before 3.4.5, does not validate the origin of Netlink messages, which allows local users to spoof Netlink communication via a crafted connector message.
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 | 3.2.23-1 | — |
| Debian 13 | linux | 3.2.23-1 | — |
| Debian 12 | linux | 3.2.23-1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | hyper-v | 6-17.5 | openSUSE-SU-2024:10513-1 |
Advisories 1
- openSUSE-SU-2024:10513-1 hyper-v-6-17.5 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=bcc2c9c3fff859e0eb019fe6fec26f9b8eba795c
- https://bugzilla.novell.com/show_bug.cgi?id=761200
- [oss-security] 20120606 Re: CVE-Request: hyper-v daemon mailing-list
- [oss-security] 20121127 Re: CVE-2012-5532 hypervkvpd DoS mailing-list
- https://github.com/torvalds/linux/commit/bcc2c9c3fff859e0eb019fe6fec26f9b8eba795c
- openSUSE-SU-2012:1526 vendor-advisory