CVE-2019-18422
Description
An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service or gain privileges by leveraging the erroneous enabling of interrupts. Interrupts are unconditionally unmasked in exception handlers. When an exception occurs on an ARM system which is handled without changing processor level, some interrupts are unconditionally enabled during exception entry. So exceptions which occur when interrupts are masked will effectively unmask the interrupts. A malicious guest might contrive to arrange for critical Xen code to run with interrupts erroneously enabled. This could lead to data corruption, denial of service, or possibly even privilege escalation. However a precise attack technique has not been identified.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
17- Xen/Xendescription
- osv-coords15 versionspkg:rpm/suse/xen&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/xen&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP1pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/xen&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/xen&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208
< 4.9.4_06-3.59.1+ 14 more
- (no CPE)range: < 4.9.4_06-3.59.1
- (no CPE)range: < 4.9.4_06-3.59.1
- (no CPE)range: < 4.11.3_02-2.20.1
- (no CPE)range: < 4.10.4_08-3.28.1
- (no CPE)range: < 4.12.1_04-3.6.1
- (no CPE)range: < 4.10.4_08-3.28.1
- (no CPE)range: < 4.12.1_04-3.6.1
- (no CPE)range: < 4.9.4_06-3.59.1
- (no CPE)range: < 4.9.4_06-3.59.1
- (no CPE)range: < 4.11.3_02-2.20.1
- (no CPE)range: < 4.9.4_06-3.59.1
- (no CPE)range: < 4.11.3_02-2.20.1
- (no CPE)range: < 4.11.3_02-2.20.1
- (no CPE)range: < 4.9.4_06-3.59.1
- (no CPE)range: < 4.9.4_06-3.59.1
Patches
Vulnerability mechanics
References
7- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2BQKX7M2RHCWDBKNPX4KEBI3MJIH6AYZ/mitrevendor-advisoryx_refsource_FEDORA
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I5WWPW4BSZDDW7VHU427XTVXV7ROOFFW/mitrevendor-advisoryx_refsource_FEDORA
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZYATWNUGHRBG6I3TC24YHP5Y3J7I6KH/mitrevendor-advisoryx_refsource_FEDORA
- www.debian.org/security/2020/dsa-4602mitrevendor-advisoryx_refsource_DEBIAN
- www.openwall.com/lists/oss-security/2019/10/31/5mitremailing-listx_refsource_MLIST
- xenbits.xen.org/xsa/advisory-303.htmlmitrex_refsource_MISC
- seclists.org/bugtraq/2020/Jan/21mitremailing-listx_refsource_BUGTRAQ
News mentions
0No linked articles in our index yet.