CVE-2022-33745

The CVE-2022-33745 issue is in the Xen hypervisor affecting x86 paravirtualized guests. The root cause is an incorrect TLB flush condition after code movement inside Xen, causing some necessary TLB flushes to be omitted when running PV guests in shadow paging mode (to support migrations and L1TF ...

CVE-2022-33745

insufficient TLB flush for x86 PV guests in shadow mode For migration as well as to work around kernels unaware of L1TF see XSA-273, PV guests may be run in shadow paging mode. To address XSA-401, code was moved inside a function in Xen. This code movement missed a variable changing meaning / val...

USN-5518-1: Linux kernel vulnerabilities

It was discovered that the eBPF implementation in the Linux kernel did not properly prevent writes to kernel objects in BPFBTFLOAD commands. A privileged local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2022-0500 It was discovered tha...

USN-5514-1: Linux kernel vulnerabilities

It was discovered that the implementation of the 6pack and mkiss protocols in the Linux kernel did not handle detach events properly in some situations, leading to a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service system crash. CVE-2022-1195...

F5 Networks BIG-IP : Linux kernel vulnerability (K36462841)

The version of F5 Networks BIG-IP installed on the remote host is prior to 13.1.5 / 14.1.4.6 / 14.1.5 / 15.1.5.1 / 15.1.6 / 16.1.2.2 / 16.1.3 / 17.0.0. It is, therefore, affected by a vulnerability as referenced in the K36462841 advisory. - Since Linux kernel version 3.2, the mremap syscall...

Race condition

x86 pv: Race condition in typeref acquisition Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to maintain invariants required for Xen's safety, e.g. PV guests may not have direct writeable access to pagetables; updates need auditing by...

CVE-2022-26362

x86 pv: Race condition in typeref acquisition Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to maintain invariants required for Xen's safety, e.g. PV guests may not have direct writeable access to pagetables; updates need auditing by...

SUSE SLED15 / SLES15 Security Update : kernel-firmware (SUSE-SU-2022:1923-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:1923-1 advisory. - Failure to flush the Translation Lookaside Buffer TLB of the I/O memory management unit IOMMU may lead an IO...

SUSE SLES12 Security Update : kernel-firmware (SUSE-SU-2022:1846-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:1846-1 advisory. - Failure to flush the Translation Lookaside Buffer TLB of the I/O memory management unit IOMMU may lead an IO device to write to...

SUSE SLED15 / SLES15 Security Update : kernel-firmware (SUSE-SU-2022:1840-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:1840-1 advisory. - Failure to flush the Translation Lookaside Buffer TLB of the I/O memory management unit IOMMU may lead an IO...

SUSE SLES15 Security Update : kernel-firmware (SUSE-SU-2022:1751-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:1751-1 advisory. Update AMD ucode and SEV firmware - CVE-2021-26339, CVE-2021-26373, CVE-2021-26347, CVE-2021-26376, CVE-2021-26375, CVE-2021-26378,...

CVE-2021-26342

In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer TLB following a particular sequence of operations that includes creation of a new virtual machine control block VMCB. The failure to flush the TLB may cause the microcode to use stale TLB translations which may allow for...

CVE-2021-26348

Failure to flush the Translation Lookaside Buffer TLB of the I/O memory management unit IOMMU may lead an IO device to write to memory it should not be able to access, resulting in a potential loss of integrity...

CVE-2021-26342

In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer TLB following a particular sequence of operations that includes creation of a new virtual machine control block VMCB. The failure to flush the TLB may cause the microcode to use stale TLB translations which may allow for...

Design/Logic Flaw

Failure to flush the Translation Lookaside Buffer TLB of the I/O memory management unit IOMMU may lead an IO device to write to memory it should not be able to access, resulting in a potential loss of integrity...

Code injection

In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer TLB following a particular sequence of operations that includes creation of a new virtual machine control block VMCB. The failure to flush the TLB may cause the microcode to use stale TLB translations which may allow for...

CVE-2021-26348

Failure to flush the Translation Lookaside Buffer TLB of the I/O memory management unit IOMMU may lead an IO device to write to memory it should not be able to access, resulting in a potential loss of integrity...

CVE-2021-26348

Technical details about CVE-2021-26348 are not publicly provided in the supplied documents; no affected products, root cause, or remediation specifics are present. Please monitor for updates from the referenced advisories and databases.

CVE-2021-26342

CVE-2021-26342 is documented in the SUSE kernel-firmware advisories as part of a set of AMD/SEV-related fixes. The vulnerability description states that in SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer (TLB) after a sequence including creation of a new VMCB, causing th...

CVE-2021-26342

In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer TLB following a particular sequence of operations that includes creation of a new virtual machine control block VMCB. The failure to flush the TLB may cause the microcode to use stale TLB translations which may allow for...