MGASA-2021-0410 - Updated kernel-linus packages fix security vulnerabilities Publication date: 23 Aug 2021 URL: https://advisories.mageia.org/MGASA-2021-0410.html Type: security Affected Mageia releases: 8 CVE: CVE-2021-3653, CVE-2021-3656, CVE-2021-38205 This kernel-linus update is based on upstream 5.10.60 and fixes atleast the following security issues: A missing validation of the "int_ctl" VMCB field allows a malicious L1 guest to enable AVIC support (Advanced Virtual Interrupt Controller) for the L2 guest. The L2 guest is able to write to a limited but still relatively large subset of the host physical memory, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape (CVE-2021-3653). A missing validation of the the "virt_ext" VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS (Virtual VMLOAD/VMSAVE) for the L2 guest. Under these circumstances, the L2 guest is able to run VMLOAD/VMSAVE unintercepted, and thus read/write portions of the host physical memory, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape (CVE-2021-3656). drivers/net/ethernet/xilinx/xilinx_emaclite.c in the Linux kernel before 5.13.3 makes it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (). For other upstream fixes, see the referenced changelogs. References: - https://bugs.mageia.org/show_bug.cgi?id=29385 - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.57 - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.58 - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.59 - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.60 - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3653 - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3656 - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38205 SRPMS: - 8/core/kernel-linus-5.10.60-1.mga8