CVE-2026-54906 concurrent-ruby: ReadWriteLock allows wrong-thread write release and stray read-release counter corruption

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReadWriteLockreleasewritelock does not verify that the calling thread acquired the write lock. Any thread with access to the lock object can release an active write lock held by another thread. A second writer can...

CVE-2026-54906 concurrent-ruby: ReadWriteLock allows wrong-thread write release and stray read-release counter corruption

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReadWriteLockreleasewritelock does not verify that the calling thread acquired the write lock. Any thread with access to the lock object can release an active write lock held by another thread. A second writer can...

CVE-2026-54906

Vulnerability summary (CVE-2026-54906) : In the Ruby concurrency library concurrent-ruby (ReadWriteLock), versions prior to 1.3.7 expose a synchronization bug in the public API. Specifically, release_write_lock does not verify that the calling thread owns the write lock, allowing another thread t...

CVE-2026-54906 concurrent-ruby: ReadWriteLock allows wrong-thread write release and stray read-release counter corruption

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReadWriteLockreleasewritelock does not verify that the calling thread acquired the write lock. Any thread with access to the lock object can release an active write lock held by another thread. A second writer can...

CVE-2026-54905

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReentrantReadWriteLock can incorrectly grant a write lock after one thread acquires the read lock 32,768 times. The lock stores a thread's local read and write hold counts in one integer. The low 15 bits are used...

CVE-2026-54905 concurrent-ruby: `ReentrantReadWriteLock` read-count overflow grants a write lock without exclusivity

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReentrantReadWriteLock can incorrectly grant a write lock after one thread acquires the read lock 32,768 times. The lock stores a thread's local read and write hold counts in one integer. The low 15 bits are used...

CVE-2026-54905

CVE-2026-54905 affects the concurrent-ruby library, specifically Concurrent::ReentrantReadWriteLock. Before version 1.3.7, after a thread acquires the read lock 32,768 times, the local read count overflows into the WRITE_LOCK_HELD bit, causing try_write_lock to treat the thread as if it holds a w...

CVE-2026-54905 concurrent-ruby: `ReentrantReadWriteLock` read-count overflow grants a write lock without exclusivity

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReentrantReadWriteLock can incorrectly grant a write lock after one thread acquires the read lock 32,768 times. The lock stores a thread's local read and write hold counts in one integer. The low 15 bits are used...

CVE-2026-54905 concurrent-ruby: `ReentrantReadWriteLock` read-count overflow grants a write lock without exclusivity

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReentrantReadWriteLock can incorrectly grant a write lock after one thread acquires the read lock 32,768 times. The lock stores a thread's local read and write hold counts in one integer. The low 15 bits are used...

Astra Linux – Vulnerability in Chromium

Integer overflow in Codecs in Google Chrome prior to version 146.0.7680.178 allowed a remote attacker to perform arbitrary read/write operations through a crafted HTML page. Chromium security severity: High...

Astra Linux – Vulnerability in Chromium

Before version 146.0.7680.153, read and write operations in WebGL in Google Chrome allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. Chromium security severity: Critical...

RLSA-2026:28233 Moderate: libpng security update

The libpng packages contain a library of functions for creating and manipulating Portable Network Graphics PNG image format files. Security Fixes: libpng: libpng: Arbitrary code execution due to use-after-free vulnerability CVE-2026-33416 libpng: libpng: Information disclosure and denial of servi...

libpng security update

An update is available for libpng. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The libpng packages contain a library of functions for creating and manipulati...

PT-2026-52106

Name of the Vulnerable Software and Affected Versions chrome-devtools-mcp versions 0.24.0 through 1.0.9 Description A workspace-boundary bypass exists because the McpContext.validatePath function fails to canonicalize symbolic links when checking if a path falls under configured root paths. This...

PT-2026-51723

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ipc/shm component where the shm destroy orphaned function iterates through the shm idr using shm idsns.rwsem, which fails to serialize all fields evaluated by shm...

CVE-2026-47385

NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, an authenticated user with base-create permission can attach a SQLite source pointing at an arbitrary file on the NocoDB host, including NocoDB's own internal databases. The SQLite client and the base/integration creat...

Moderate: Red Hat Security Advisory: libpng security update

An update for libpng is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

libpng: libpng: Information disclosure and denial of service via out-of-bounds read/write in Neon palette expansion

A flaw was found in libpng. A remote attacker could exploit an out-of-bounds read and write vulnerability in the ARM/AArch64 Neon-optimized palette expansion path. This occurs when processing a final partial chunk of 8-bit paletted rows without verifying sufficient input pixels, leading to...

CVE-2026-33760

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, Langflow's /api/v1/monitor router exposes 7 endpoints that perform read, write, and delete operations on user-owned resources — messages, sessions, build artifacts, and LLM transaction logs — without...

GHSA-WMFG-5P4H-5FW3 Gogs allows users to write to readonly repositories using receive-pack + service=git-upload-pack confusion

Summary Git smart HTTP authorizes POST …/git-receive-pack using the client-supplied service query string so ?service=git-upload-pack is evaluated as read access while routing still runs git receive-pack, allowing push where only read should be allowed. Details Gogs' Git Smart HTTP handler for...