RHEL 7 : firefox (RHSA-2026:26551)

The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:26551 advisory. Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: firefox:...

Oj: Use-After-Free in Oj::Parser SAJ Callback via Input Mutation

Summary Oj::Parserparse is vulnerable to a heap use-after-free when a SAJ/SAJ2 callback mutates the input JSON string during parsing. The C engine holds a raw const byte pointer into the Ruby string's internal buffer. If a callback e.g. hashstart resizes the string — for example by calling...

Use After Free

Overview Affected versions of this package are vulnerable to Use After Free in the optsymbolkeysset. An attacker can cause the application to read from freed memory by toggling the symbolkeys option from true to false on a reused parser instance and then invoking the parse method. Remediation...

GHSA-PHWJ-RPRQ-35PP Nokogiri: Possible Use-After-Free when setting an attribute value via `Nokogiri::XML::Attr#value=` or `#content=`

Summary 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, Nokogiri::XML::Attrvalue= could free the underlying native child node while the wrapper remained...

GHSA-WJV4-X9W8-WM3H Nokogiri: Possible Use-After-Free when setting `Document#root=` to an invalid node type

Summary Nokogiri::XML::Documentroot= validated only that the new root was a Nokogiri::XML::Node, allowing a DTD node to be set as the document root. The result is a heap use-after-free during garbage collection or finalization, leading to an invalid memory read or potentially a segfault. Nokogiri...

Nokogiri: Possible Use-After-Free when setting `Document#root=` to an invalid node type

Summary Nokogiri::XML::Documentroot= validated only that the new root was a Nokogiri::XML::Node, allowing a DTD node to be set as the document root. The result is a heap use-after-free during garbage collection or finalization, leading to an invalid memory read or potentially a segfault. Nokogiri...

CVE-2026-56210

A heap-buffer-overflow read vulnerability was found in libaom, the reference AV1 codec implementation. A missing bounds check in the SVC Scalable Video Coding layer ID control function allows setting a spatiallayerid exceeding the configured number of layers. This causes an out-of-bounds heap rea...

CVE-2026-52910

In the Linux kernel, the following vulnerability has been resolved: bpf: Free reuseport cBPF prog after RCU grace period. Eulgyu Kim reported the splat below with a repro. 0 The repro sets up a UDP reuseport group with a cBPF prog and replaces it with a new one while another thread is sending a U...

CVE-2026-52910

In the Linux kernel, the following vulnerability has been resolved: bpf: Free reuseport cBPF prog after RCU grace period. Eulgyu Kim reported the splat below with a repro. 0 The repro sets up a UDP reuseport group with a cBPF prog and replaces it with a new one while another thread is sending a U...

Astra Linux – Vulnerability in RustC

In the standard library of Rust before version 1.2.0, BinaryHeap is not panic-safe. The binary heap becomes in an inconsistent state when the comparison of generic elements within siftup or siftdownrange causes a panic. This bug results in a decrease of zeroed memory of an arbitrary type, which c...

CVE-2026-11941 Use-after-free in connection ID iterator and FFI functions

Cloudflare Quiche was affected by 2 use-after-free vulnerabilities in the connection ID iterator FFI functions. The “quicheconnectioniditernext” and “quicheconnretiredscidnext” functions would return a pointer to a “ConnectionId” to the applications via function arguments, but the owned...

CVE-2026-11941

Cloudflare Quiche was affected by 2 use-after-free vulnerabilities in the connection ID iterator FFI functions. The “quicheconnectioniditernext” and “quicheconnretiredscidnext” functions would return a pointer to a “ConnectionId” to the applications via function arguments, but the owned...

CVE-2026-11941 Use-after-free in connection ID iterator and FFI functions

Cloudflare Quiche was affected by 2 use-after-free vulnerabilities in the connection ID iterator FFI functions. The “quicheconnectioniditernext” and “quicheconnretiredscidnext” functions would return a pointer to a “ConnectionId” to the applications via function arguments, but the owned...

SUSE CVE-2026-6040

A heap use-after-free existed when importing the blank-width characters of an ODF number format. A position value read from the document was not checked against the length of the format-code string, so a malformed number format could be processed against memory outside that string. In fixed...

SUSE CVE-2026-12301

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152 and Thunderbird 152...

SUSE CVE-2026-12317

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152 and Thunderbird 152...

SUSE CVE-2026-12326

Memory safety bugs present in Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152 and Thunderbird 152...

RLSA-2026:26709 Important: xorg-x11-server security, bug fix, and enhancement update

X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon. Security Fixes: xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: stack buffer overflow in font alias resolution du...

PT-2026-51085

Name of the Vulnerable Software and Affected Versions Oj versions prior to 3.17.2 Description A heap use-after-free occurs when disabling symbol keys on a reused Oj::Parser instance. When the symbol keys setting is changed from true to false, the opt symbol keys set function frees the internal ke...

PT-2026-50983

Name of the Vulnerable Software and Affected Versions libaom affected versions not specified Description A heap-buffer-overflow read occurs in the reference AV1 codec implementation due to a missing bounds check in the SVC Scalable Video Coding layer ID control function. This allows the spatial...