CVE-2022-26356
Xen Virtual Machine Manager Log Dirty Hypervisor Mode Privilege Escalation Memory Leak
Description
Racy interactions between dirty vram tracking and paging log dirty hypercalls Activation of log dirty mode done by XEN_DMOP_track_dirty_vram (was named HVMOP_track_dirty_vram before Xen 4.9) is racy with ongoing log dirty hypercalls. A suitably timed call to XEN_DMOP_track_dirty_vram can enable log dirty while another CPU is still in the process of tearing down the structures related to a previously enabled log dirty mode (XEN_DOMCTL_SHADOW_OP_OFF). This is due to lack of mutually exclusive locking between both operations and can lead to entries being added in already freed slots, resulting in a memory leak.
INFO
Published Date :
April 5, 2022, 1:15 p.m.
Last Modified :
Nov. 21, 2024, 6:53 a.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2022-26356
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Xen packages to a version greater than 4.12.0, 4.14.0, or 4.16.0 depending on your installed version.
- Reboot the system after updating the packages.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-26356.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-26356 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-26356
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-26356 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-26356 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2022/04/05/1 Added Reference http://xenbits.xen.org/xsa/advisory-397.html Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/ Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/ Added Reference https://security.gentoo.org/glsa/202402-07 Added Reference https://www.debian.org/security/2022/dsa-5117 Added Reference https://xenbits.xenproject.org/xsa/advisory-397.txt -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 04, 2024
Action Type Old Value New Value Added Reference Xen Project https://security.gentoo.org/glsa/202402-07 [No types assigned] -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Xen Project https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/ [No types assigned] Added Reference Xen Project https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/ [No types assigned] Removed Reference Xen Project https://lists.fedoraproject.org/archives/list/[email protected]/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/ Removed Reference Xen Project https://lists.fedoraproject.org/archives/list/[email protected]/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/ -
CWE Remap by [email protected]
Aug. 08, 2023
Action Type Old Value New Value Changed CWE CWE-772 CWE-667 -
Modified Analysis by [email protected]
Jul. 29, 2022
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/ Mailing List, Third Party Advisory Changed Reference Type https://www.debian.org/security/2022/dsa-5117 No Types Assigned https://www.debian.org/security/2022/dsa-5117 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 02, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/ [No Types Assigned] -
CVE Modified by [email protected]
Apr. 21, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/ [No Types Assigned] -
CVE Modified by [email protected]
Apr. 19, 2022
Action Type Old Value New Value Added Reference https://www.debian.org/security/2022/dsa-5117 [No Types Assigned] -
Initial Analysis by [email protected]
Apr. 14, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:H/Au:N/C:N/I:N/A:C) Added CVSS V3.1 NIST AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2022/04/05/1 No Types Assigned http://www.openwall.com/lists/oss-security/2022/04/05/1 Mailing List, Patch, Third Party Advisory Changed Reference Type http://xenbits.xen.org/xsa/advisory-397.html No Types Assigned http://xenbits.xen.org/xsa/advisory-397.html Patch, Third Party Advisory Changed Reference Type https://xenbits.xenproject.org/xsa/advisory-397.txt No Types Assigned https://xenbits.xenproject.org/xsa/advisory-397.txt Third Party Advisory Added CWE NIST CWE-772 Added CPE Configuration OR *cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* versions from (including) 4.0.0 up to (excluding) 4.12.0 *cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* versions from (including) 4.13.0 up to (excluding) 4.14.0 *cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* versions from (including) 4.15.0 up to (excluding) 4.16.0 -
CVE Modified by [email protected]
Apr. 05, 2022
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2022/04/05/1 [No Types Assigned] -
CVE Modified by [email protected]
Apr. 05, 2022
Action Type Old Value New Value Added Reference http://xenbits.xen.org/xsa/advisory-397.html [No Types Assigned]
Vulnerability Scoring Details
Base CVSS Score: 5.6
Base CVSS Score: 4
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} -0.00%
score
0.09114
percentile