CVE-2026-57437

A flaw was found in Nokogiri, an XML and HTML library for Ruby. This vulnerability occurs when an application directly constructs an XPathContext and allows its associated document to be garbage collected while the context is still in use. An attacker could potentially exploit this by causing the...

GHSA-QPW4-5X99-6VJP golang.org/x/crypto/ssh: Invoking memory leak when rejecting channels can lead to DoS

An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for...

EUVD-2026-31392

golang.org/x/crypto/ssh: Invoking memory leak when rejecting channels can lead to DoS...

CVE-2026-53018

A flaw was found in the Linux kernel's f2fs filesystem. During garbage collection, a race condition can occur when a page is moved and updated, but the system attempts to read it again from an outdated location. This can trigger a kernel bug, leading to a system crash and a denial of service DoS....

EUVD-2026-39428

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::XPathContext did not keep its source document alive for garbage collection. If an XPathContext outlived its document and the document was collected, evaluating an XPath expression...

CVE-2026-57435 Nokogiri: Possible Use-After-Free when setting an attribute value via `Nokogiri::XML::Attr#value=` or `#content=`

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri’s CRuby native extension could leave a Ruby wrapper pointing to freed memory when replacing the value of an XML attribute. If Ruby code had already accessed an attribute child node,...

net/url: Incorrect parsing of IPv6 host literals in net/url

The Go standard library function net/url.Parse insufficiently validated the host/authority component and accepted some invalid URLs by effectively treating garbage before an IP-literal as ignorable. The function should have rejected this as invalid...

PT-2026-52451

Name of the Vulnerable Software and Affected Versions Nokogiri versions prior to 1.19.4 Description In the Nokogiri XML and HTML library for Ruby, the root= method of Nokogiri::XML::Document only validates that the new root is a Nokogiri::XML::Node. This allows a DTD Document Type Definition node...

Linux Distros Unpatched Vulnerability : CVE-2026-53018

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - f2fs: avoid reading already updated pages during GC We found the following issue during fuzz testing: page: refcount:3 mapcount:0 mapping:00000000b6e89c65...

net/url: Incorrect parsing of IPv6 host literals in net/url

The Go standard library function net/url.Parse insufficiently validated the host/authority component and accepted some invalid URLs by effectively treating garbage before an IP-literal as ignorable. The function should have rejected this as invalid...

EUVD-2026-38886

In the Linux kernel, the following vulnerability has been resolved: f2fs: avoid reading already updated pages during GC We found the following issue during fuzz testing: page: refcount:3 mapcount:0 mapping:00000000b6e89c65 index:0x18b2dc pfn:0x161ba9 memcg:f8ffff800e269c00 aops:f2fsmetaaops ino:2...

EUVD-2026-38873

In the Linux kernel, the following vulnerability has been resolved: afunix: Drop all SCM attributes for SOCKMAP. SOCKMAP can hide inflight fd from AFUNIX GC. When a socket in SOCKMAP receives skb with inflight fd, skpsockverdictdataready looks up the mapped socket and enqueue skb to its...

CVE-2026-53005 af_unix: Drop all SCM attributes for SOCKMAP.

In the Linux kernel, the following vulnerability has been resolved: afunix: Drop all SCM attributes for SOCKMAP. SOCKMAP can hide inflight fd from AFUNIX GC. When a socket in SOCKMAP receives skb with inflight fd, skpsockverdictdataready looks up the mapped socket and enqueue skb to its...

CVE-2026-53005

CVE-2026-53005 affects the Linux kernel af_unix SOCKMAP feature. The issue arises from improper handling of SCM attributes when data is passed to SOCKMAP, enabling a use-after-free and inflight-file-descriptor leaks due to inability of GC paths to inspect psock queues after skb redirection. Multi...

Important: Red Hat Security Advisory: python3.14 security, bug fix, and enhancement update

An update for python3.14 is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability fr...

GHSA-M578-W5VF-RFCM Oj: Use-After-Free in Oj::Parser SAJ Long Key Callback

Summary Oj::Parser in SAJ mode does not protect cached object keys ≥ 35 bytes from garbage collection. A Ruby callback that triggers GC inside hashend can cause the key string to be reclaimed while the C parser still holds a pointer to it. The subsequent access to the freed string VALUE results i...

Use After Free

Overview Affected versions of this package are vulnerable to Use After Free in the parsermark. An attacker can cause a segmentation fault and potentially crash the application by triggering garbage collection after assigning a custom class to arrayclass or hashclass and before parsing, leading to...

GHSA-VWM4-62GF-X745 Oj: Use-After-Free in Oj::Parser array_class/hash_class GC Marking

Summary Oj::Parser in usual mode does not mark arrayclass and hashclass references during garbage collection. If GC runs after the class is assigned but before a parse, the class object is reclaimed, leaving the parser holding a dangling VALUE. The subsequent parse call dereferences the freed...

GHSA-P67V-3W7G-WJG7 Nokogiri: Possible Use-After-Free when directly using `NokogirI::XML::XPathContext` beyond document lifetime

Summary Nokogiri::XML::XPathContext did not keep its source document alive for garbage collection. If an XPathContext outlived its document and the document was collected, evaluating an XPath expression could read invalid memory and potentially segfault. This is only reachable when application co...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: afunix: Initialize sccindex in unixaddedge. Quang Le reported that the AFUNIX GC could garbage-collect a receive queue of an alive in-flight socket, with a detailed repro. The repro consists of three stages. 1 Create a single...