CVE-2022-26356 (GCVE-0-2022-26356)

Vulnerability from cvelistv5 – Published: 2022-04-05 00:00 – Updated: 2024-08-03 05:03
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
  • unknown
Assigner
XEN
References
Impacted products
Vendor Product Version
Xen xen Unknown: consult Xen advisory XSA-397
Create a notification for this product.
Credits
{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'This issue was discovered by Roger Pau Monné of Citrix.'}]}}}
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