CVE-2026-64846

Nix is a package manager for Linux and other Unix systems. Prior to 2.35.0, a malicious derivation executed with the recursive-nix experimental feature can exploit a time-of-check/time-of-use race involving final symlink handling in the LocalStore restore path. The race can cause writeFile to...

CVE-2026-64846 Nix: Arbitrary file truncation outside the sandbox with recursive-nix experimental feature

Nix is a package manager for Linux and other Unix systems. Prior to 2.35.0, a malicious derivation executed with the recursive-nix experimental feature can exploit a time-of-check/time-of-use race involving final symlink handling in the LocalStore restore path. The race can cause writeFile to...

EUVD-2026-63424

Nix is a package manager for Linux and other Unix systems. Prior to 2.35.0, a malicious derivation executed with the recursive-nix experimental feature can exploit a time-of-check/time-of-use race involving final symlink handling in the LocalStore restore path. The race can cause writeFile to...

CVE-2026-64846

Nix versions prior to 2.35.0 contain a TOCTOU race in the LocalStore restore path: writeFile opens a path with O_TRUNC instead of enforcing FinalSymlink::DontFollow, allowing a malicious derivation (with recursive-nix enabled) to create or truncate an empty file outside the build sandbox with dae...

PT-2026-79064

Nix is a package manager for Linux and other Unix systems. Prior to 2.35.0, a malicious derivation executed with the recursive-nix experimental feature can exploit a time-of-check/time-of-use race involving final symlink handling in the LocalStore restore path. The race can cause writeFile to...

PT-2026-72489

In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: ipc3-control: Fix TOCTOU in bytes put and bytes get In sof ipc3 bytes put, the size used for the memcpy is derived from the old data-size already in the buffer, not the incoming new data's size field. If the new data h...

CVE-2026-20908

Time-of-check time-of-use race condition for the IntelR NPU Driver for Windows for all versions within Ring 1: Device Drivers may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a high complexity attack may enable denial of service. This result...

CVE-2026-20908

Time-of-check time-of-use race condition for the IntelR NPU Driver for Windows for all versions within Ring 1: Device Drivers may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a high complexity attack may enable denial of service. This result...

EUVD-2026-56512

Time-of-check time-of-use race condition for the IntelR NPU Driver for Windows for all versions within Ring 1: Device Drivers may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a high complexity attack may enable denial of service. This result...

PT-2026-70318

Time-of-check time-of-use race condition for the IntelR NPU Driver for Windows for all versions within Ring 1: Device Drivers may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a high complexity attack may enable denial of service. This result...

EUVD-2026-55488

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn4: avoid rereading IB param length Reuse the parameter length returned by vcnv40encfindibparam instead of rereading it from the IB. This avoids a potential TOCTOU issue if the IB contents change between reads. cherr...

CVE-2026-72584

The CVE-2026-72584 entry concerns fastschema up to v0.15.1, where a TOCTOU race in the verifyOTPSession function (pkg/auth/local.go) allows an unauthenticated remote attacker to bypass the OTP attempt limit in the account recovery flow. The root cause is non-atomic read/increment of the attempt c...

Astra Linux – Vulnerability in libcap2

A flaw was discovered in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use TOCTOU race condition in the capsetfile function. This allows an attacker with write access to a parent directory to redirect file capability updates to a file controlled by the attacker. By doin...

Astra Linux – Vulnerability in util-linux

util-linux is a collection of Linux utilities. Prior to version 2.41.4, a TOCTOU Time-of-Check-Time-of-Use vulnerability was identified in the SUID binary /usr/bin/mount from util-linux. When the mount binary sets up loop devices, it validates the source file path with user privileges using fork ...

SUSE CVE-2026-18477

A TOCTOU Time-of-Check Time-of-Use vulnerability in GNU tar's incremental dumpdir 'X' rename handling allows a local attacker with write access to a directory being backed up to influence the restore process if the attacker has access to the system where the restore is being performed. During...

CVE-2026-19079

A TOCTOU Time-of-Check-Time-of-Use race condition vulnerability was found in the fixfiles script in policycoreutils. When running fixfiles relabel or fixfiles restore, the script used find and chcon commands to locate and relabel unlabeled files under /tmp and other directories. A local attacker...

UBUNTU-CVE-2026-19079

A TOCTOU Time-of-Check-Time-of-Use race condition vulnerability was found in the fixfiles script in policycoreutils. When running fixfiles relabel or fixfiles restore, the script used find and chcon commands to locate and relabel unlabeled files under /tmp and other directories. A local attacker...

CVE-2026-19079

A TOCTOU Time-of-Check-Time-of-Use race condition vulnerability was found in the fixfiles script in policycoreutils. When running fixfiles relabel or fixfiles restore, the script used find and chcon commands to locate and relabel unlabeled files under /tmp and other directories. A local attacker...

CVE-2026-19079

CVE-2026-19079 affects policycoreutils’ fixfiles script, where a TOCTOU race during relabel/restore allows a local attacker to swap directory components with symlinks and have chcon follow the link to label arbitrary files (e.g., /etc/shadow). The issue arises from using find to locate unlabeled ...

CVE-2026-19079 Policycoreutils: policycoreutils: toctou race condition in fixfiles allows arbitrary selinux label manipulation

A TOCTOU Time-of-Check-Time-of-Use race condition vulnerability was found in the fixfiles script in policycoreutils. When running fixfiles relabel or fixfiles restore, the script used find and chcon commands to locate and relabel unlabeled files under /tmp and other directories. A local attacker...