CVE-2026-10653 Non-atomic `net_buf` reference counts cause double-free / free-list corruption under concurrent unref

The Zephyr netbuf library lib/netbuf/buf.c manipulated both of its reference counts -- the per-header buf-ref and the per-data-block refcount at the start of each variable/heap data allocation -- with plain non-atomic C operators buf-ref++, if --buf-ref 0, if --refcount. The API is documented as...

CVE-2026-10653

The CVE-2026-10653 issue affects the Zephyr net_buf library (lib/net_buf/buf.c). It relies on non-atomic operations for two reference counters: the per-header buf->ref and the per-data-block ref_count. Under true concurrency, two independent unrefs can observe the same prior value and both tre...

CVE-2026-10653 Non-atomic `net_buf` reference counts cause double-free / free-list corruption under concurrent unref

The Zephyr netbuf library lib/netbuf/buf.c manipulated both of its reference counts -- the per-header buf-ref and the per-data-block refcount at the start of each variable/heap data allocation -- with plain non-atomic C operators buf-ref++, if --buf-ref 0, if --refcount. The API is documented as...

Exploit for Improper Authentication in Oracle Concurrent_Processing

markdown CVE-2025-61882 – Oracle E-Business Suite Remote Co...

CVE-2026-53303

A flaw was found in the Linux kernel's f2fs filesystem. This vulnerability allows for potential out-of-bounds memory access or the display of stale data. It occurs because the extensionlist and related counts are read without proper synchronization, enabling a concurrent system file system sysfs...

Critical Photon OS Security Update - PHSA-2026-5.0-0909

Updates of 'rubygem-concurrent-ruby' packages of Photon OS have been released...

Critical Photon OS Security Update - PHSA-2026-4.0-1046

Updates of 'rubygem-concurrent-ruby' packages of Photon OS have been released...

Critical Photon OS Security Update - PHSA-2026-5.0-91-0909

Updates of 'rubygem-concurrent-ruby' packages of Photon OS have been released...

Linux Distros Unpatched Vulnerability : CVE-2026-52952

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: iommu: Fix WARNON in iommugroupsetdomainnofail due to reset In iommugroupsetdomaininternal,...

dm cache: fix null-deref with concurrent writes in passthrough mode

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

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

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SUSE CVE-2026-52988

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: join hook list via splicelistrcu in commit phase Publish new hooks in the list into the basechain/flowtable using splicelistrcu to ensure netlink dump list traversal via rcu is safe while concurrent ruleset...

[SECURITY] Fedora 44 Update: docker-buildkit-0.31.0-1.fc44

Concurrent, cache-efficient, and Dockerfile-agnostic builder toolkit...

[SECURITY] Fedora 43 Update: docker-buildkit-0.31.0-1.fc43

Concurrent, cache-efficient, and Dockerfile-agnostic builder toolkit...

CVE-2026-54905

A flaw was found in concurrent-ruby. The Concurrent::ReentrantReadWriteLock component can incorrectly grant a write lock to a thread while other threads still hold or can acquire read locks. This occurs when a thread acquires a read lock 32,768 times, causing an internal counter to incorrectly...

DEBIAN-CVE-2026-53303

In the Linux kernel, the following vulnerability has been resolved: f2fs: protect extensionlist reading with sblock in f2fssbishow In f2fssbishow, the extensionlist, extensioncount and hotextcount are read without holding sbi-sblock. If a concurrent sysfs store modifies the extension list via...

CVE-2026-53303

In the Linux kernel, the following vulnerability has been resolved: f2fs: protect extensionlist reading with sblock in f2fssbishow In f2fssbishow, the extensionlist, extensioncount and hotextcount are read without holding sbi-sblock. If a concurrent sysfs store modifies the extension list via...

UBUNTU-CVE-2026-53303

In the Linux kernel, the following vulnerability has been resolved: f2fs: protect extensionlist reading with sblock in f2fssbishow In f2fssbishow, the extensionlist, extensioncount and hotextcount are read without holding sbi-sblock. If a concurrent sysfs store modifies the extension list via...

CVE-2026-53303 f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show()

In the Linux kernel, the following vulnerability has been resolved: f2fs: protect extensionlist reading with sblock in f2fssbishow In f2fssbishow, the extensionlist, extensioncount and hotextcount are read without holding sbi-sblock. If a concurrent sysfs store modifies the extension list via...