Unrated severityNVD Advisory· Published Jun 9, 2022· Updated Aug 3, 2024
CVE-2022-26362
CVE-2022-26362
Description
x86 pv: Race condition in typeref acquisition Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to maintain invariants required for Xen's safety, e.g. PV guests may not have direct writeable access to pagetables; updates need auditing by Xen. Unfortunately, the logic for acquiring a type reference has a race condition, whereby a safely TLB flush is issued too early and creates a window where the guest can re-establish the read/write mapping before writeability is prohibited.
Affected products
38- osv-coords37 versionspkg:rpm/opensuse/xen&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/xen&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/xen&distro=openSUSE%20Leap%20Micro%205.2pkg:rpm/opensuse/xen&distro=openSUSE%20Tumbleweedpkg:rpm/suse/xen&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/xen&distro=SUSE%20Enterprise%20Storage%207pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOSpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg: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%20Micro%205.1pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP4pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCLpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg: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%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/xen&distro=SUSE%20Manager%20Proxy%204.1pkg:rpm/suse/xen&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1pkg:rpm/suse/xen&distro=SUSE%20Manager%20Server%204.1pkg:rpm/suse/xen&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/xen&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 4.14.5_02-150300.3.29.1+ 36 more
- (no CPE)range: < 4.14.5_02-150300.3.29.1
- (no CPE)range: < 4.16.1_04-150400.4.5.2
- (no CPE)range: < 4.14.5_04-150300.3.32.1
- (no CPE)range: < 4.16.1_02-3.1
- (no CPE)range: < 4.12.4_24-150100.3.72.1
- (no CPE)range: < 4.13.4_10-150200.3.55.1
- (no CPE)range: < 4.12.4_24-150100.3.72.1
- (no CPE)range: < 4.12.4_24-150100.3.72.1
- (no CPE)range: < 4.13.4_10-150200.3.55.1
- (no CPE)range: < 4.13.4_10-150200.3.55.1
- (no CPE)range: < 4.10.4_36-150000.3.77.1
- (no CPE)range: < 4.10.4_36-150000.3.77.1
- (no CPE)range: < 4.14.5_02-150300.3.29.1
- (no CPE)range: < 4.14.5_02-150300.3.29.1
- (no CPE)range: < 4.14.5_02-150300.3.29.1
- (no CPE)range: < 4.16.1_04-150400.4.5.2
- (no CPE)range: < 4.14.5_02-150300.3.29.1
- (no CPE)range: < 4.16.1_04-150400.4.5.2
- (no CPE)range: < 4.7.6_24-43.91.1
- (no CPE)range: < 4.9.4_30-3.106.1
- (no CPE)range: < 4.11.4_30-2.76.1
- (no CPE)range: < 4.12.4_24-3.71.1
- (no CPE)range: < 4.12.4_24-150100.3.72.1
- (no CPE)range: < 4.12.4_24-150100.3.72.1
- (no CPE)range: < 4.13.4_10-150200.3.55.1
- (no CPE)range: < 4.13.4_10-150200.3.55.1
- (no CPE)range: < 4.11.4_30-2.76.1
- (no CPE)range: < 4.12.4_24-3.71.1
- (no CPE)range: < 4.10.4_36-150000.3.77.1
- (no CPE)range: < 4.12.4_24-150100.3.72.1
- (no CPE)range: < 4.13.4_10-150200.3.55.1
- (no CPE)range: < 4.12.4_24-3.71.1
- (no CPE)range: < 4.13.4_10-150200.3.55.1
- (no CPE)range: < 4.13.4_10-150200.3.55.1
- (no CPE)range: < 4.13.4_10-150200.3.55.1
- (no CPE)range: < 4.11.4_30-2.76.1
- (no CPE)range: < 4.11.4_30-2.76.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
8- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OH65U6FTTB5MLH5A6Q3TW7KVCGOG4MYI/mitrevendor-advisoryx_refsource_FEDORA
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/mitrevendor-advisoryx_refsource_FEDORA
- security.gentoo.org/glsa/202208-23mitrevendor-advisoryx_refsource_GENTOO
- www.debian.org/security/2022/dsa-5184mitrevendor-advisoryx_refsource_DEBIAN
- packetstormsecurity.com/files/167718/Xen-TLB-Flush-Bypass.htmlmitrex_refsource_MISC
- www.openwall.com/lists/oss-security/2022/06/09/3mitremailing-listx_refsource_MLIST
- xenbits.xen.org/xsa/advisory-401.htmlmitrex_refsource_CONFIRM
- xenbits.xenproject.org/xsa/advisory-401.txtmitrex_refsource_MISC
News mentions
0No linked articles in our index yet.