Description
The vsock_stream_sendmsg function in net/vmw_vsock/af_vsock.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.
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 | open-vm-tools | 2:9.2.2-893683-8 | — |
| Debian 13 | open-vm-tools | 2:9.2.2-893683-8 | — |
| Debian 12 | open-vm-tools | 2:9.2.2-893683-8 | — |
References
- [linux-kernel] 20130414 Linux 3.9-rc7 mailing-list
- [oss-security] 20130414 Linux kernel: more net info leak fixes for v3.9 mailing-list
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d5e0d0f607a7a029c6563a0470d88255c89a8d11
- https://github.com/torvalds/linux/commit/d5e0d0f607a7a029c6563a0470d88255c89a8d11