Source: xen Version: 4.17.0+74-g3eac216e6e-1 Severity: grave Tags: security upstream Justification: user security hole X-Debbugs-Cc: car...@debian.org, Debian Security Team <t...@security.debian.org>
Hi, The following vulnerability was published for xen, affects only 4.17. Filling as RC, to make it on the radar for the bookworm release (and make IMHO sense to try to get it in before release). CVE-2022-42335[0]: | x86 shadow paging arbitrary pointer dereference In environments where | host assisted address translation is necessary but Hardware Assisted | Paging (HAP) is unavailable, Xen will run guests in so called shadow | mode. Due to too lax a check in one of the hypervisor routines used | for shadow page handling it is possible for a guest with a PCI device | passed through to cause the hypervisor to access an arbitrary pointer | partially under guest control. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2022-42335 https://www.cve.org/CVERecord?id=CVE-2022-42335 [1] https://www.openwall.com/lists/oss-security/2023/04/25/1 [2] https://xenbits.xen.org/xsa/advisory-430.html Please adjust the affected versions in the BTS as needed. Regards, Salvatore
