| Name | CVE-2014-8480 |
| Description | The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 lacks intended decoder-table flags for certain RIP-relative instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| linux (PTS) | buster | 4.19.249-2 | fixed |
| buster (security) | 4.19.304-1 | fixed |
| bullseye | 5.10.209-2 | fixed |
| bullseye (security) | 5.10.205-2 | fixed |
| bookworm | 6.1.76-1 | fixed |
| bookworm (security) | 6.1.85-1 | fixed |
| trixie | 6.6.15-2 | fixed |
| sid | 6.7.12-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| linux | source | (unstable) | (not affected) | | | |
| linux-2.6 | source | (unstable) | (not affected) | | | |
Notes
- linux <not-affected> (Introduced in 3.17)
- linux-2.6 <not-affected> (Introduced in 3.17)
The NULL pointer dereference was introduced in https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=41061cdb98a0bec464278b4db8e894a3121671f5 (v3.17-rc1)
Fix: https://git.kernel.org/cgit/virt/kvm/kvm.git/commit/?id=3f6f1480d86bf9fc16c160d803ab1d006e3058d5