| Name | CVE-2014-7155 |
| Description | The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not properly check supervisor mode permissions, which allows local HVM users to cause a denial of service (guest crash) or gain guest kernel mode privileges via vectors involving an (1) HLT, (2) LGDT, (3) LIDT, or (4) LMSW instruction. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-3041-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| xen (PTS) | bullseye | 4.14.6-1 | fixed |
| bullseye (security) | 4.14.5+94-ge49571868d-1 | fixed | |
| bookworm | 4.17.5+23-ga4e5191dc0-1+deb12u1 | fixed | |
| bookworm (security) | 4.17.5+23-ga4e5191dc0-1 | fixed | |
| sid, trixie | 4.20.0+68-g35cb38b222-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| xen | source | squeeze | (unfixed) | end-of-life | ||
| xen | source | wheezy | 4.1.4-3+deb7u3 | DSA-3041-1 | ||
| xen | source | (unstable) | 4.4.1-3 |