CVE-2026-23519 RustCrypto cmov: thumbv6m-none-eabi compiler emits non-constant time assembly when using cmovnz

RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in constant-time and not be rewritten as branches by the compiler. Prior to 0.4.4, the thumbv6m-none-eabi Cortex M0, M0+ and M1 compiler emits non-constant time assembly when using cmovnz...

RustCrypto Utilities cmov: `thumbv6m-none-eabi` compiler emits non-constant time assembly when using `cmovnz`

Summary thumbv6m-none-eabi Cortex M0, M0+ and M1 compiler emits non-constant time assembly when using cmovnz portable version. I did not found any other target with the same behaviour but I did not go through all targets supported by Rust. Details It seems that, during mask computation, an LLVM...

GHSA-2GQC-6J2Q-83QP RustCrypto Utilities cmov: `thumbv6m-none-eabi` compiler emits non-constant time assembly when using `cmovnz`

Summary thumbv6m-none-eabi Cortex M0, M0+ and M1 compiler emits non-constant time assembly when using cmovnz portable version. I did not found any other target with the same behaviour but I did not go through all targets supported by Rust. Details It seems that, during mask computation, an LLVM...

CVE-2026-23519: Observable Timing Discrepancy

RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in constant-time and not be rewritten as branches by the compiler. Prior to 0.4.4, the thumbv6m-none-eabi Cortex M0, M0+ and M1 compiler emits non-constant time assembly when using cmovnz...

RustCrypto security vulnerabilities

RustCrypto is an open-source authentication encryption algorithm with associated data algorithms developed by RustCrypto. Versions of RustCrypto prior to 0.4.4 contained security vulnerabilities, which were caused by the compiler generating non-constant-time assembly code...

PT-2026-3096

RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in constant-time and not be rewritten as branches by the compiler. Prior to 0.4.4, the thumbv6m-none-eabi Cortex M0, M0+ and M1 compiler emits non-constant time assembly when using cmovnz...

Non-constant-time code generation on ARM32 targets

Summary While the cmov crate has a special backend for aarch64 which uses special CSEL instructions, on 32-bit ARM it uses a portable pure Rust fallback implementation. This implementation uses a combination of bitwise arithmetic and core::hint::blackbox to attempt to coerce constant-time code...

RUSTSEC-2026-0003 Non-constant-time code generation on ARM32 targets

Summary While the cmov crate has a special backend for aarch64 which uses special CSEL instructions, on 32-bit ARM it uses a portable pure Rust fallback implementation. This implementation uses a combination of bitwise arithmetic and core::hint::blackbox to attempt to coerce constant-time code...

CVE-2025-68802

CVE-2025-68802 concerns the Linux kernel DRM XE path. The vulnerability stems from exec/vm_bind ioctls allowing an unbounded num_syncs value, enabling an excessively large allocation and warnings from the page allocator. The fix introduces DRM_XE_MAX_SYNCS (1024) and rejects requests exceeding th...

RustCrypto: Signatures has timing side-channel in ML-DSA decomposition

Summary A timing side-channel was discovered in the Decompose algorithm which is used during ML-DSA signing to generate hints for the signature. Details The analysis was performed using a constant-time analyzer that examines compiled assembly code for instructions with data-dependent timing...

GHSA-HCP2-X6J4-29J7 RustCrypto: Signatures has timing side-channel in ML-DSA decomposition

Summary A timing side-channel was discovered in the Decompose algorithm which is used during ML-DSA signing to generate hints for the signature. Details The analysis was performed using a constant-time analyzer that examines compiled assembly code for instructions with data-dependent timing...

Memory Re-orderings as a Timerless Side-channel

Summary Researchers have provided AMD with a paper titled “MEMORY DISORDER: Memory Re-orderings as a Timerless Side-channel” In this work, the authors introduced MEMORY DISORDER, a timerless side-channel attack that exploits memory re-orderings to infer activity on other processes. They showed th...

MiracleLinux 9 : avahi-0.8-22.el9_6.1 (AXSA:2025-10638:02)

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2025-10638:02 advisory. avahi: Avahi Wide-Area DNS Uses Constant Source Port CVE-2024-52615 Tenable has extracted the preceding description block directly from the MiracleLinux...

CVE-2022-23589

Tensorflow is an Open Source Machine Learning Framework. Under certain scenarios, Grappler component of TensorFlow can trigger a null pointer dereference. There are 2 places where this can occur, for the same malicious alteration of a SavedModel file fixing the first one would trigger the same...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP5 RT kernel was updated to receive various security bugfixes. The following security bugs were fixed: CVE-2022-50280: pnode: terminate at peers of source bsc1249806. CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in liotargetnaclinfoshow bsc1251786...

SUSE-SU-2026:0033-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP4 RT kernel was updated to receive various security bugfixes. The following security bugs were fixed: - CVE-2022-50280: pnode: terminate at peers of source bsc1249806. - CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in liotargetnaclinfoshow bsc1251786. -...

ruby:fuzz_prism: Heap-buffer-overflow in pm_constant_pool_insert

Project: https://github.com/ruby/ruby.git Detailed Report: https://oss-fuzz.com/testcase?key=4874136989270016 Project: ruby Fuzzing Engine: libFuzzer Fuzz Target: fuzzprism Job Type: libfuzzerasanruby Platform Id: linux Crash Type: Heap-buffer-overflow READ 1 Crash Address: 0x764cbb1e1b3f Crash...

PT-2026-26332

wolfSSL 5.8.4 on RISC-V RV32I architectures lacks a constant-time software implementation for 64-bit multiplication. The compiler-inserted muldi3 subroutine executes in variable time based on operand values. This affects multiple SP math functions sp 256 mul 9, sp 256 sqr 9, etc., leading to a...

PT-2026-27729

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the kernel’s ksmbd component related to Message Authentication Code MAC comparisons. The issue stems from the use of memcmp for MAC comparisons, which is susceptible to...

PT-2026-26340

Name of the Vulnerable Software and Affected Versions wolfSSL version 5.8.4 Description The software contains a flaw in the constant-time masking logic within the sp 256 get entry 256 9 function. When compiled with GCC targeting RISC-V RV32I using the -O3 optimization flag, the logic is altered...