CVE-2021-46990

CVE-2021-46990 affects powerpc/64s in the Linux kernel. The vulnerability arises from runtime patching of entry flush mitigations via a debugfs entry (entry_flush), which can be unsafe when CPUs are active, potentially causing a crash due to an LR restore issue. The fixed vulnerability patches ar...

CVE-2021-46990 powerpc/64s: Fix crashes when toggling entry flush barrier

In the Linux kernel, the following vulnerability has been resolved: powerpc/64s: Fix crashes when toggling entry flush barrier The entry flush mitigation can be enabled/disabled at runtime via a debugfs file entryflush, which causes the kernel to patch itself to enable/disable the relevant...

CVE-2021-47034: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: powerpc/64s: Fix pte update for kernel memory on radix When adding a PTE a ptesync is needed to order the update of the PTE with subsequent accesses otherwise a spurious fault may be raised. radixsetpteat does not do this for...

CVE-2021-46990: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: powerpc/64s: Fix crashes when toggling entry flush barrier The entry flush mitigation can be enabled/disabled at runtime via a debugfs file entryflush, which causes the kernel to patch itself to enable/disable the relevant...

kernel: powerpc/64s: Don't use DSISR for SLB faults

In the Linux kernel, the following vulnerability has been resolved: powerpc/64s: Don't use DSISR for SLB faults Since commit 46ddcb3950a2 "powerpc/mm: Show if a bad page fault on data is read or write." we use pagefaultiswriteregs-dsisr in badpagefault to determine if the fault is for a read or...

PT-2023-9724

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The issue is related to a race condition in the powerpc/64s/interrupt component of the Linux kernel, specifically with the security mitigation switch. The RFI and STF security mitigation...

PT-2022-29803

Name of the Vulnerable Software and Affected Versions Linux Kernel versions v5.5 through v5.16.18 Description The issue is related to the use of DSISR for SLB faults on powerpc/64s. The actual impact and attack plausibility have not yet been proven. Recommendations For Linux Kernel versions v5.5...

PT-2022-29487

Name of the Vulnerable Software and Affected Versions Linux Kernel versions v5.5 through v5.17.1 Description The issue concerns the use of DSISR for SLB faults on powerpc/64s. It was introduced in version v5.5 and fixed in version v5.17.2. The actual impact and attack plausibility have not yet be...

PT-2021-30147

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.14.12 Description The issue is related to the powerpc/64s emergency stack path in the Linux Kernel. It was introduced in version v5.3 and fixed in version v5.14.12. The actual impact and attack plausibility ha...

PT-2021-26152

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.14.12 Description The issue is related to the powerpc/64s emergency stack path in the Linux Kernel. It was introduced in version v5.3 and fixed in version v5.14.12. The actual impact and attack plausibility ha...

PT-2021-26089

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.10.73 Description The issue is related to the powerpc/64s emergency stack path in the Linux Kernel. It was introduced in version v5.3 and fixed in version v5.10.73. The actual impact and attack plausibility ha...

PT-2021-30084

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.10.73 Description The issue is related to the powerpc/64s emergency stack path in the Linux Kernel. It was introduced in version v5.3 and fixed in version v5.10.73. The actual impact and attack plausibility ha...

PT-2021-26151

Name of the Vulnerable Software and Affected Versions Linux Kernel versions v5.14 through v5.14.11 Description The issue concerns an unrecoverable Machine Check Exception MCE when an asynchronous handler is called from a Non-Maskable Interrupt NMI on powerpc/64s systems. The actual impact and...

PT-2024-11425

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The issue is related to the powerpc/64s architecture in the Linux kernel. The machine check handler is not considered an NMI on 64s, and the early handler schedules the machine check...

PT-2024-11424

Name of the Vulnerable Software and Affected Versions Linux kernel versions 5.15.0-rc2-00034-ge057cdade6e5 and earlier Description The vulnerability is related to the powerpc/64s architecture in the Linux kernel. It involves the emergency stack path jumping into a label inside the GEN COMMON BODY...

PT-2021-24924

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v4.19.191 Description: The issue is related to the powerpc/64s architecture and involves a fix for the page table entry pte update for kernel memory on radix. The actual impact and attack plausibility have not y...

PT-2021-24915

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions 4.19.159 through 4.19.190 Description: The issue is related to crashes when toggling entry flush barrier on powerpc/64s. The actual impact and attack plausibility have not yet been proven. Recommendations: For Linux Kern...

PT-2021-28954

Name of the Vulnerable Software and Affected Versions Linux Kernel versions 4.4.245 through 4.4.268 Description The issue is related to crashes when toggling entry flush barrier on powerpc/64s. The actual impact and attack plausibility have not yet been proven. Recommendations For Linux Kernel...

PT-2021-28931

Name of the Vulnerable Software and Affected Versions Linux Kernel versions 4.14.208 through 4.14.232 Description The issue is related to crashes when toggling entry flush barrier on powerpc/64s. The actual impact and attack plausibility have not yet been proven. Recommendations For Linux Kernel...

PT-2021-24676

Name of the Vulnerable Software and Affected Versions Linux Kernel versions v5.10 through v5.12.4 Description The issue is related to crashes when toggling entry flush barrier on powerpc/64s. The actual impact and attack plausibility have not yet been proven. Recommendations For Linux Kernel...