HIGH
insufficient TLB flush for x86 PV guests in shadow mode For migration as well as to work around kernels unaware of L1TF (see XSA-273), PV guests may be run in shadow paging mode
Published Jul 26, 2022
8.8
HIGHCVSS 3.1
EPSS 0.30%
Description
insufficient TLB flush for x86 PV guests in shadow mode For migration as well as to work around kernels unaware of L1TF (see XSA-273), PV guests may be run in shadow paging mode. To address XSA-401, code was moved inside a function in Xen. This code movement missed a variable changing meaning / value between old and new code positions. The now wrong use of the variable did lead to a wrong TLB flush condition, omitting flushes where such are necessary.
Affected products
No data.
Configuration 2
OR
- 11.0
- 35
- 36
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Weaknesses (0)
No CWE recorded.
References (7)
- http://www.openwall.com/lists/oss-security/2022/07/26/2 mailing-listMailing ListPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2022/07/26/3 mailing-listMailing ListPatchThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-408.html PatchVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HUFIMNGYP5VQAA6KE3T2I5GW6UP6F7BS/ vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MYI3OMJ7RIZNL3C6GUWNANNPEUUID6FM/ vendor-advisory
- https://www.debian.org/security/2022/dsa-5272 vendor-advisoryThird Party Advisory
- https://xenbits.xenproject.org/xsa/advisory-408.txt Vendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2022/07/26/2 | mailing-listMailing ListPatchThird Party Advisory | |
| http://www.openwall.com/lists/oss-security/2022/07/26/3 | mailing-listMailing ListPatchThird Party Advisory | |
| http://xenbits.xen.org/xsa/advisory-408.html | PatchVendor Advisory | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HUFIMNGYP5VQAA6KE3T2I5GW6UP6F7BS/ | vendor-advisory | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MYI3OMJ7RIZNL3C6GUWNANNPEUUID6FM/ | vendor-advisory | |
| https://www.debian.org/security/2022/dsa-5272 | vendor-advisoryThird Party Advisory | |
| https://xenbits.xenproject.org/xsa/advisory-408.txt | Vendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner XEN
Published Jul 26, 2022
Updated Aug 3, 2024
Reserved Jun 15, 2022
Link CVE-2022-33745
CISA Vulnrichment
Updated n/a