CVE-2020-11743
Description
An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service because of a bad error path in GNTTABOP_map_grant. Grant table operations are expected to return 0 for success, and a negative number for errors. Some misplaced brackets cause one error path to return 1 instead of a negative value. The grant table code in Linux treats this condition as success, and proceeds with incorrectly initialised state. A buggy or malicious guest can construct its grant table in such a way that, when a backend domain tries to map a grant, it hits the incorrect error path. This will crash a Linux based dom0 or backend domain.
Affected products
14- Xen/Xendescription
- osv-coords13 versionspkg:rpm/opensuse/xen&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/xen&distro=openSUSE%20Tumbleweedpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP1pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5
< 4.12.2_04-lp151.2.15.1+ 12 more
- (no CPE)range: < 4.12.2_04-lp151.2.15.1
- (no CPE)range: < 4.15.1_01-1.2
- (no CPE)range: < 4.10.4_10-3.31.1
- (no CPE)range: < 4.10.4_10-3.31.1
- (no CPE)range: < 4.12.2_04-3.15.1
- (no CPE)range: < 4.12.2_04-3.15.1
- (no CPE)range: < 4.11.3_04-2.23.1
- (no CPE)range: < 4.12.2_04-3.11.1
- (no CPE)range: < 4.11.3_04-2.23.1
- (no CPE)range: < 4.12.2_04-3.11.1
- (no CPE)range: < 4.10.4_10-3.31.1
- (no CPE)range: < 4.11.3_04-2.23.1
- (no CPE)range: < 4.12.2_04-3.11.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
9- lists.opensuse.org/opensuse-security-announce/2020-05/msg00006.htmlmitrevendor-advisoryx_refsource_SUSE
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5M2XRNCHOGGTJQBZQJ7DCV6ZNAKN3LE2/mitrevendor-advisoryx_refsource_FEDORA
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVTP4OYHCTRU3ONFJOFJQVNDFB25KLLG/mitrevendor-advisoryx_refsource_FEDORA
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YMAW7D2MP6RE4BFI5BZWOBBWGY3VSOFN/mitrevendor-advisoryx_refsource_FEDORA
- security.gentoo.org/glsa/202005-08mitrevendor-advisoryx_refsource_GENTOO
- www.debian.org/security/2020/dsa-4723mitrevendor-advisoryx_refsource_DEBIAN
- www.openwall.com/lists/oss-security/2020/04/14/3mitremailing-listx_refsource_MLIST
- xenbits.xen.org/xsa/advisory-316.htmlmitrex_refsource_CONFIRM
- xenbits.xen.org/xsa/advisory-316.htmlmitrex_refsource_MISC
News mentions
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