kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region

A flaw was found in KVM. When updating a guest's page table entry, vmpgoff was improperly used as the offset to get the page's pfn. As vaddr and vmpgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and...

kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region

A flaw was found in KVM. When updating a guest's page table entry, vmpgoff was improperly used as the offset to get the page's pfn. As vaddr and vmpgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and...

kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region

A flaw was found in KVM. When updating a guest's page table entry, vmpgoff was improperly used as the offset to get the page's pfn. As vaddr and vmpgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and...

Unbreakable Enterprise kernel-container security update

4.14.35-2047.520.3.1.el7 - proc: procskipspaces shouldn't think it is working on C strings Linus Torvalds Orabug: 34883027 CVE-2022-4378 - proc: avoid integer type confusion in getproclong Linus Torvalds Orabug: 34883027 CVE-2022-4378 - hugetlbfs: don't delete error page from pagecache James...

kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region

A flaw was found in KVM. When updating a guest's page table entry, vmpgoff was improperly used as the offset to get the page's pfn. As vaddr and vmpgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and...

kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region

A flaw was found in KVM. When updating a guest's page table entry, vmpgoff was improperly used as the offset to get the page's pfn. As vaddr and vmpgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and...

RHEL 8 : kernel-rt (RHSA-2022:8673)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2022:8673 advisory. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Securi...

kernel: KVM: x86: Drop WARNs that assert a triple fault never "escapes" from L2

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Drop WARNs that assert a triple fault never "escapes" from L2 Remove WARNs that sanity check that KVM never lets a triple fault for L2 escape and incorrectly end up in L1. In normal operation, the sanity check is...

kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region

A flaw was found in KVM. When updating a guest's page table entry, vmpgoff was improperly used as the offset to get the page's pfn. As vaddr and vmpgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and...

kernel: exec: Force single empty string when argv is empty

In the Linux kernel, the following vulnerability has been resolved: exec: Force single empty string when argv is empty Quoting1 Ariadne Conill: "In several other operating systems, it is a hard requirement that the second argument to execve2 be the name of a program, thus prohibiting a scenario...

GSD-2022-1006862 bpf: Propagate error from htab_lock_bucket() to userspace

bpf: Propagate error from htablockbucket to userspace This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v6.0.3 by commit...

PT-2022-35117 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v6.0.3 Description: The issue is related to the propagation of errors from htab lock bucket to userspace. The actual impact and attack plausibility have not yet been proven. Recommendations: For Linux Kernel...

kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region

A flaw was found in KVM. When updating a guest's page table entry, vmpgoff was improperly used as the offset to get the page's pfn. As vaddr and vmpgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and...

kernel: nfs_atomic_open() returns uninitialized data instead of ENOTDIR

A flaw was found in the Linux kernel. When an application tries to open a directory using the ODIRECTORY flag in a mounted NFS filesystem, a lookup operation is performed. If the NFS server returns a file as a result of the lookup, the NFS filesystem returns an uninitialized file descriptor inste...

Samsung Mobile Devices Improper Access Control Vulnerability

Samsung mobile devices using Mali GPU contains an improper access control vulnerability in seclog file. Exploitation of the vulnerability exposes sensitive kernel information to the userspace. This vulnerability was chained with CVE-2021-25337 and CVE-2021-25370...

GSD-2022-1006322 KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0

KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0 This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.9.326 by commit...

GSD-2022-1006280 KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0

KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0 This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.14.291 by commit...

GSD-2022-1006069 KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0

KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0 This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.211 by commit...

PT-2022-34538 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v4.14.291 Description: The issue concerns a scenario where userspace injects an interrupt with GIF=0, potentially leading to a bug. The actual impact and attack plausibility have not yet been proven...

GSD-2022-1005379 KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0

KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0 This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.19.2 by commit...