USN-5218-1: Linux kernel (OEM) vulnerabilities

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. CVE-2021-4002 It was discovered that the eBPF implementation in the Linux...

Ubuntu: Security Advisory (USN-5207-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

USN-5211-1: Linux kernel vulnerability

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages...

USN-5206-1: Linux kernel (OEM) vulnerability

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages...

SUSE SLES11 Security Update : xen (SUSE-SU-2020:14557-1)

The remote SUSE Linux SLES11 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2020:14557-1 advisory. - A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing...

SUSE: Security Advisory (SUSE-SU-2020:3088-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Privilege Escalation

xen is vulnerable to privilege escalation. Guest OS users are able to cause a denial of service condition which could cause a data leak and possibly gaining privileges due to the mishandling of the coalescing of per-page IOMMU TLB flushes...

Xen INVLPG-like flushes may leave stale TLB entries privilege escalation (XSA-286)

A privilege escalation vulnerability exists in Xen x86 PV guest kernels due to mishandles invalidation of TLB entries An unauthenticated, local attacker x86 PV guest OS users to gain guest OS privileges by modifying kernel memory contents, because invalidation of TLB entries is mishandled during...

SUSE SLES12 Security Update : xen (SUSE-SU-2020:3742-1)

This update for xen fixes the following issues : bsc1178963 - stack corruption from XSA-346 change XSA-355 bsc1177409 - CVE-2020-27674: x86 PV guest INVLPG-like flushes may leave stale TLB entries XSA-286 bsc1177412 - CVE-2020-27672: Race condition in Xen mapping code XSA-345 bsc1177413 -...

SUSE-SU-2020:14557-1 Security update for xen

This update for xen fixes the following issues: - bsc1178963 - stack corruption from XSA-346 change XSA-355 - bsc1178935 - CVE-2020-25723: assertion failure through usbpacketunmap in hw/usb/hcd-ehci.c - bsc1177409 - CVE-2020-27674: x86 PV guest INVLPG-like flushes may leave stale TLB entries...

SUSE-SU-2020:3631-1 Security update for xen

This update for xen fixes the following issues: - bsc1178963 - stack corruption from XSA-346 change XSA-355 - bsc1177409 - CVE-2020-27674: x86 PV guest INVLPG-like flushes may leave stale TLB entries XSA-286 - bsc1177412 - CVE-2020-27672: Race condition in Xen mapping code XSA-345 - bsc1177413 -...

Fedora 31 : xen (2020-6dd36a716c)

revised patch for XSA-286 mitigating performance impact ---- x86 PV guest INVLPG-like flushes may leave stale TLB entries XSA-286, CVE-2020-27674 1891092 ---- x86: Race condition in Xen mapping code XSA-345 undue deferral of IOMMU TLB flushes XSA-346 unsafe AMD IOMMU page table updates XSA-347 No...

openSUSE Security Update : xen (openSUSE-2020-1844)

This update for xen fixes the following issues : - bsc1177409 - VUL-0: CVE-2020-27673: xen: x86 PV guest INVLPG-like flushes may leave stale TLB entries XSA-286 - bsc1177412 - VUL-0: CVE-2020-27672: xen: Race condition in Xen mapping code XSA-345 - bsc1177413 - VUL-0: CVE-2020-27671: xen: undue...

Fedora 32 : xen (2020-e3d619cc32)

x86: Race condition in Xen mapping code XSA-345 undue deferral of IOMMU TLB flushes XSA-346 unsafe AMD IOMMU page table updates XSA-347 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to...

SUSE-SU-2020:3049-1 Security update for xen

This update for xen fixes the following issues: - bsc1177409 - VUL-0: CVE-2020-27673: xen: x86 PV guest INVLPG-like flushes may leave stale TLB entries XSA-286 - bsc1177412 - VUL-0: CVE-2020-27672: xen: Race condition in Xen mapping code XSA-345 - bsc1177413 - VUL-0: CVE-2020-27671: xen: undue...

CVE-2020-27671

An issue was discovered in Xen through 4.14.x allowing x86 HVM and PVH guest OS users to cause a denial of service data corruption, cause a data leak, or possibly gain privileges because coalescing of per-page IOMMU TLB flushes is mishandled...

Design/Logic Flaw

An issue was discovered in Xen through 4.14.x allowing x86 HVM and PVH guest OS users to cause a denial of service data corruption, cause a data leak, or possibly gain privileges because coalescing of per-page IOMMU TLB flushes is mishandled...

CVE-2020-27671

An issue was discovered in Xen through 4.14.x allowing x86 HVM and PVH guest OS users to cause a denial of service data corruption, cause a data leak, or possibly gain privileges because coalescing of per-page IOMMU TLB flushes is mishandled...

CVE-2020-27671

CVE-2020-27671 affects Xen 4.14.x and earlier on x86 HVM/PVH guests. The issue arises from mishandling coalescing of per-page IOMMU TLB flushes in the Xen IOMMU path, enabling a guest OS user to cause denial of service (data corruption), data leaks, or potentially a privilege escalation. Connecte...

CVE-2020-27671

An issue was discovered in Xen through 4.14.x allowing x86 HVM and PVH guest OS users to cause a denial of service data corruption, cause a data leak, or possibly gain privileges because coalescing of per-page IOMMU TLB flushes is mishandled...