ALPINE-CVE-2022-26356

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2022-26356
Published: 05 Apr 2022, 13:15
Last modified:03 Dec 2025, 22:50

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.6 MEDIUM
3.1 (osv_alpine)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

05 Apr 2022, 13:15
Published
Vulnerability first disclosed
03 Dec 2025, 22:50
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.6CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

Affected Systems

  • alpine•xen

    < 4.13.4-r3 | < 4.14.5-r0 | < 4.15.2-r2 | < 4.15.2-r2 | < 4.16.1-r0 | < 4.16.1-r0 | < 4.16.1-r0 | < 4.16.1-r0 | < 4.16.1-r0 | < 4.16.1-r0 | < 4.16.1-r0 | < 4.16.1-r0

References (1)