Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: riscv, bpf: Fixed potential NULL dereferencing. The bpfjitbinaryfree function requires a non-NULL argument. When the RISC-V BPF JIT fails to converge within NRJITITERATIONS steps, jitdata-header will be NULL, triggering a NULL...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: rvc: Sparse-Memory/vmemmap out-of-bounds fix The offset of vmemmap has been adjusted so that the first page of vmemmap is mapped to the first page of physical memory. This ensures that the bounds of vmemmap are respected durin...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: perf: RISC-V: Remove PERFHESSTOPPED flag checking in riscvpmustart Since commit 096b52fd2bb4 “perf: RISC-V: throttle perf events”, the perfsampleeventtook function was added to report time spent in overflow interrupts. If the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: RISC-V: KVM: Teardown of riscv-specific bits after kvmexit During a module removal, kvmexit invokes an architecture-specific disable call, which disables AIA. However, we invoke aiaexit before kvmexit, resulting in the following...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: RISC-V: KVM – Writing hgatp registers with valid mode bits According to the RISC-V Privileged Architecture Specification, when MODE=Bare is selected, software must write zero to the remaining fields of hgatp. We have previously...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: RISCV: Fixed a race condition when vmap stack overflow occurs. Currently, when detecting vmap stack overflow, RISCV first switches to the so-called shadow stack, and then uses this shadow stack to call getoverflowstack, in order ...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: RISCV: kprobe: Fixed kernel panic when probing an illegal position The kernel would panic when trying to probe an illegal position. For example: CONFIGRISCVISAC=n Example code: bash echo 'p:hello kernelclone+0x16 a0=%a0'...

CVE-2026-29649

NEMU contains an implementation flaw in its RISC-V Hypervisor CSR handling where henvcfg7:4 CBIE/CBCFE/CBZE-related fields is incorrectly masked/updated based on menvcfg7:4, so a machine-mode write to menvcfg can implicitly modify the hypervisor's environment configuration. This can lead to...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-011273)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011273 advisory. In the Linux kernel, the following vulnerability has been resolved: riscv: process: fix kernel info leakage threadstruct's s12 may contain random kernel memory...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-011166)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011166 advisory. In the Linux kernel, the following vulnerability has been resolved: RISC-V: Make port I/O string accessors actually work Fix port I/O string accessors such as insb',...

EUVD-2026-23944

NEMU contains an implementation flaw in its RISC-V Hypervisor CSR handling where henvcfg7:4 CBIE/CBCFE/CBZE-related fields is incorrectly masked/updated based on menvcfg7:4, so a machine-mode write to menvcfg can implicitly modify the hypervisor's environment configuration. This can lead to...

CVE-2026-29649

NEMU contains an implementation flaw in its RISC-V Hypervisor CSR handling where henvcfg7:4 CBIE/CBCFE/CBZE-related fields is incorrectly masked/updated based on menvcfg7:4, so a machine-mode write to menvcfg can implicitly modify the hypervisor's environment configuration. This can lead to...

XiangShan 安全漏洞

XiangShan is an open-source high-performance RISC-V processor project developed by XiangShan in China. There is a security vulnerability in XiangShan, which stems from specially crafted read and write operations on the menvcfg structure, potentially causing the WPRI bit to be set unexpectedly,...

PT-2026-33830

NEMU contains an implementation flaw in its RISC-V Hypervisor CSR handling where henvcfg7:4 CBIE/CBCFE/CBZE-related fields is incorrectly masked/updated based on menvcfg7:4, so a machine-mode write to menvcfg can implicitly modify the hypervisor's environment configuration. This can lead to...

CVE-2026-29642

A local attacker who can execute privileged CSR operations or can induce firmware to do so performs carefully crafted reads/writes to menvcfg e.g., csrrs in M-mode. On affected XiangShan versions commit aecf601e803bfd2371667a3fb60bfcd83c333027, 2024-11-19, these menvcfg accesses can unexpectedly...

CVE-2026-29645

NEMU OpenXiangShan/NEMU before v2025.12.r2 contains an improper instruction-validation flaw in its RISC-V Vector RVV decoder. The decoder does not correctly validate the funct3 field when decoding vsetvli/vsetivli/vsetvl, allowing certain invalid OP-V instruction encodings to be misinterpreted an...

CVE-2026-29645

NEMU OpenXiangShan/NEMU before v2025.12.r2 contains an improper instruction-validation flaw in its RISC-V Vector RVV decoder. The decoder does not correctly validate the funct3 field when decoding vsetvli/vsetivli/vsetvl, allowing certain invalid OP-V instruction encodings to be misinterpreted an...

CVE-2026-29645

CVE-2026-29645 (NEMU/OpenXiangShan/NEMU) : The RVV decoder in NEMU before v2025.12.r2 has an improper instruction-validation flaw: it does not properly validate the funct3 field when decoding vsetvli/vsetivli/vsetvl. As a result, certain invalid OP-V instruction encodings can be misinterpreted an...

CVE-2026-40323

SP1 is a zero‑knowledge virtual machine that proves the correct execution of programs compiled for the RISC-V architecture. In versions 6.0.0 through 6.0.2, a soundness vulnerability in the SP1 V6 recursive shard verifier allows a malicious prover to construct a recursive proof from a shard proof...

The vulnerability of the SAVE_ABI_STATE() function in the arch/riscv/kernel/mcount.S module of the Linux operating system’s RISCV architecture-based kernel subsystem allows a attacker to trigger a service failure.

The vulnerability of the SAVEABISTATE function in the arch/riscv/kernel/mcount.S module of the Linux operating system’s RISCV-architecture-based module management subsystem is related to buffer overflow based on a stack. Exploiting this vulnerability could allow an attacker to trigger a service...