SUSE-SU-2026:0147-1 Security update for the Linux Kernel RT (Live Patch 6 for SUSE Linux Enterprise 15 SP7)

This update for the SUSE Linux Enterprise kernel 640-150700.7.22 fixes various security issues The following security issues were fixed: - CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in liotargetnaclinfoshow bsc1251787. - CVE-2025-40204: sctp: Fix MAC comparison to be constant-time...

SUSE-SU-2026:0146-1 Security update for the Linux Kernel RT (Live Patch 3 for SUSE Linux Enterprise 15 SP7)

This update for the SUSE Linux Enterprise kernel 6.4.0-150700.7.13 fixes various security issues The following security issues were fixed: - CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in liotargetnaclinfoshow bsc1251787. - CVE-2025-38608: bpf, ktls: Fix data corruption when using...

SUSE-SU-2026:0144-1 Security update for the Linux Kernel RT (Live Patch 2 for SUSE Linux Enterprise 15 SP7)

This update for the SUSE Linux Enterprise kernel 6.4.0-150700.7.8 fixes various security issues The following security issues were fixed: - CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in liotargetnaclinfoshow bsc1251787. - CVE-2025-38476: rpl: Fix use-after-free in rpldosrhinline...

CVE-2026-23519

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...

CVE-2026-23519

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...

CVE-2026-23519

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...

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...

CVE-2026-23519

The CVE-2026-23519 entry describes RustCrypto CMOV, which provides conditional move CPU intrinsics. The vulnerability concerns the thumbv6m-none-eabi target (Cortex-M0, M0+, M1) where the compiler emitted non-constant-time assembly for cmovnz prior to version 0.4.4. The issue affects how conditio...

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...

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...

EUVD-2026-2731

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...

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...

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...

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...

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...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: SCTP: The comparison of MACs has been fixed to require constant-time operations. To prevent timing attacks, MACs need to be compared in constant-time. Use the appropriate helper function for this purpose...