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CVE-2022-26356

Status Candidate

Overview

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.

Related Files

Gentoo Linux Security Advisory 202402-07
Posted Feb 5, 2024
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202402-7 - Multiple vulnerabilities have been found in Xen, the worst of which can lead to arbitrary code execution. Versions greater than or equal to 4.16.6_pre1 are affected.

tags | advisory, arbitrary, vulnerability, code execution
systems | linux, gentoo
advisories | CVE-2021-28703, CVE-2021-28704, CVE-2021-28705, CVE-2021-28706, CVE-2021-28707, CVE-2021-28708, CVE-2021-28709, CVE-2022-23816, CVE-2022-23824, CVE-2022-23825, CVE-2022-26356, CVE-2022-26357, CVE-2022-26358, CVE-2022-26359
SHA-256 | 19872780145bfa0c32c4309b28ecde3c62c36daf70f877bcfa9b07a713bfd2ba
Debian Security Advisory 5117-1
Posted Apr 28, 2022
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5117-1 - Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, vulnerability
systems | linux, debian
advisories | CVE-2022-23033, CVE-2022-23034, CVE-2022-23035, CVE-2022-26356, CVE-2022-26357, CVE-2022-26358, CVE-2022-26359, CVE-2022-26360, CVE-2022-26361
SHA-256 | 819f8a49cd9f2ae6dc9a4768afc2e71a91e4114e4c5860d415894bcc9b37f10b
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