CVE-2022-42330 (https://xenbits.xenproject.org/xsa/advisory-425.txt): Guests can cause Xenstore crash via soft reset When a guest issues a "Soft Reset" (e.g. for performing a kexec) the libxl based Xen toolstack will normally perform a XS_RELEASE Xenstore operation. Due to a bug in xenstored this can result in a crash of xenstored. Any other use of XS_RELEASE will have the same impact.
CVE-2022-42335 (https://xenbits.xenproject.org/xsa/advisory-430.txt): 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.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=a3930320a6720f2b609ee77a5073df1af5ba37a6 commit a3930320a6720f2b609ee77a5073df1af5ba37a6 Author: Tomáš Mózes <hydrapolic@gmail.com> AuthorDate: 2023-05-02 22:25:36 +0000 Commit: Florian Schmaus <flow@gentoo.org> CommitDate: 2023-05-16 07:33:51 +0000 app-emulation/xen: add 4.16.4/4.17.1 Bug: https://bugs.gentoo.org/905389 Signed-off-by: Tomáš Mózes <hydrapolic@gmail.com> Closes: https://github.com/gentoo/gentoo/pull/30848 Signed-off-by: Florian Schmaus <flow@gentoo.org> app-emulation/xen/Manifest | 2 + app-emulation/xen/xen-4.16.4.ebuild | 174 ++++++++++++++++++++++++++++++++++++ app-emulation/xen/xen-4.17.1.ebuild | 174 ++++++++++++++++++++++++++++++++++++ 3 files changed, 350 insertions(+)
Apologies for the delay in handling. Please stabilize when ready.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/data/glsa.git/commit/?id=3f8db3fdbc2235dee30f5c1ea206584ecabbe484 commit 3f8db3fdbc2235dee30f5c1ea206584ecabbe484 Author: GLSAMaker <glsamaker@gentoo.org> AuthorDate: 2024-02-04 07:16:20 +0000 Commit: Hans de Graaff <graaff@gentoo.org> CommitDate: 2024-02-04 07:16:59 +0000 [ GLSA 202402-07 ] Xen: Multiple Vulnerabilities Bug: https://bugs.gentoo.org/754105 Bug: https://bugs.gentoo.org/757126 Bug: https://bugs.gentoo.org/826998 Bug: https://bugs.gentoo.org/837575 Bug: https://bugs.gentoo.org/858122 Bug: https://bugs.gentoo.org/876790 Bug: https://bugs.gentoo.org/879031 Bug: https://bugs.gentoo.org/903624 Bug: https://bugs.gentoo.org/905389 Bug: https://bugs.gentoo.org/915970 Signed-off-by: GLSAMaker <glsamaker@gentoo.org> Signed-off-by: Hans de Graaff <graaff@gentoo.org> glsa-202402-07.xml | 112 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 112 insertions(+)
