Linux Distros Unpatched Vulnerability : CVE-2026-54905

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

PT-2026-52383

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description An attacker can send crafted DNS over HTTP/3 queries to trigger an exception that prevents a buffer from being freed immediately. While the buffer is eventually...

EUVD-2026-38856

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...

EUVD-2026-36906

OliveTin has a Concurrent Template Parsing Race Condition which Leads to Cross-Request Command Contamination...

GHSA-7FQ5-7WR8-RJWJ OliveTin has a Concurrent Template Parsing Race Condition which Leads to Cross-Request Command Contamination

Summary OliveTin's template engine uses a single shared text/template.Template instance tpl package-level variable in service/internal/tpl/templates.go across all goroutines. Every action execution calls tpl.Parsesource followed by t.Execute on this shared instance with no synchronization. When t...

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-2026-54904

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::AtomicReferenceupdate can enter a permanent busy retry loop when the current value is Float::NAN. The issue is caused by the interaction between AtomicReferenceupdate, which retries until compareandsetoldvalue,...

CVE-2026-54906

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-2026-53064

In the Linux kernel, the following vulnerability has been resolved: dm cache: fix null-deref with concurrent writes in passthrough mode In passthrough mode, when dm-cache starts to invalidate a cache entry and bio prison cell lock fails due to concurrent write to the same cached block, mg-cell...

CVE-2026-53049

In the Linux kernel, the following vulnerability has been resolved: gfs2: add some missing log locking Function gfs2logd calls the log flushing functions gfs2ail1start, gfs2ail1wait, and gfs2ail1empty without holding sdp-sdlogflushlock, but these functions require exclusion against concurrent...

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...

CVE-2026-54904

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::AtomicReferenceupdate can enter a permanent busy retry loop when the current value is Float::NAN. The issue is caused by the interaction between AtomicReferenceupdate, which retries until compareandsetoldvalue,...

CVE-2026-53071

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: l2cap: Add missing chan lock in l2capecredreconfrsp l2capecredreconfrsp calls l2capchandel without holding l2capchanlock. Every other l2capchandel caller in the file acquires the lock first. A remote BLE device can sen...

UBUNTU-CVE-2026-54904

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::AtomicReferenceupdate can enter a permanent busy retry loop when the current value is Float::NAN. The issue is caused by the interaction between AtomicReferenceupdate, which retries until compareandsetoldvalue,...

UBUNTU-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-2026-52988

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...

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-2026-53062

In the Linux kernel, the following vulnerability has been resolved: dm cache policy smq: fix missing locks in invalidating cache blocks In passthrough mode, the policy invalidatemapping operation is called simultaneously from multiple workers, thus it should be protected by a lock. Otherwise, we...

CVE-2026-53064

In the Linux kernel, the following vulnerability has been resolved: dm cache: fix null-deref with concurrent writes in passthrough mode In passthrough mode, when dm-cache starts to invalidate a cache entry and bio prison cell lock fails due to concurrent write to the same cached block, mg-cell...

CVE-2026-52952

In the Linux kernel, the following vulnerability has been resolved: iommu: Fix WARNON in iommugroupsetdomainnofail due to reset In iommugroupsetdomaininternal, concurrent domain attachments are rejected when any device in the group is recovering. This is necessary to fence concurrent attachments ...