CVE-2022-26356
CVSS V2 Medium 4
CVSS V3 Medium 5.6
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.
Overview
- CVE ID
- CVE-2022-26356
- Assigner
- security@xen.org
- Vulnerability Status
- Analyzed
- Published Version
- 2022-04-05T13:15:07
- Last Modified Date
- 2022-07-29T18:59:11
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* | 1 | OR | 4.0.0 | 4.12.0 |
| cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* | 1 | OR | 4.13.0 | 4.14.0 |
| cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* | 1 | OR | 4.15.0 | 4.16.0 |
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:H/Au:N/C:N/I:N/A:C
- Access Vector
- LOCAL
- Access Compatibility
- HIGH
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- COMPLETE
- Base Score
- 4
- Severity
- MEDIUM
- Exploitability Score
- 1.9
- Impact Score
- 6.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- HIGH
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 5.6
- Base Severity
- MEDIUM
- Exploitability Score
- 1.1
- Impact Score
- 4
References
| Reference URL | Reference Tags |
|---|---|
| https://xenbits.xenproject.org/xsa/advisory-397.txt | Third Party Advisory |
| http://xenbits.xen.org/xsa/advisory-397.html | Patch Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2022/04/05/1 | Mailing List Patch Third Party Advisory |
| https://www.debian.org/security/2022/dsa-5117 | |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/ | |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/ |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2022-26356 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-26356 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-08 06:20:14 | Added to TrackCVE | |||
| 2022-12-06 14:17:34 | 2022-04-05T13:15Z | 2022-04-05T13:15:07 | CVE Published Date | updated |
| 2022-12-06 14:17:34 | 2022-07-29T18:59:11 | CVE Modified Date | updated | |
| 2022-12-06 14:17:34 | Analyzed | Vulnerability Status | updated |