dnsmasq: dnsmasq: heap buffer overflow in cache via NAME_ESCAPE expansion

A heap buffer overflow was discovered in dnsmasq's DNS cache. When processing DNS responses, dnsmasq expands certain characters into longer escape sequences, but the cache buffer is not sized to hold the expanded result. A specially crafted DNS response can overflow this buffer, potentially...

Medium: dnsmasq

Issue Overview: dnsmasqs extractname function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS. CVE-2026-2291 Affected Packages: dnsmasq Issu...

EUVD-2026-29967

When a BIG-IP DNS profile enabled with DNS cache is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

CVE-2026-39458

When a BIG-IP DNS profile enabled with DNS cache is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

CVE-2026-39458 BIG-IP DNS Cache vulnerability

When a BIG-IP DNS profile enabled with DNS cache is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

CVE-2026-39458 BIG-IP DNS Cache vulnerability

When a BIG-IP DNS profile enabled with DNS cache is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

CVE-2026-39458

CVE-2026-39458 affects BIG-IP DNS when a DNS cache profile is enabled on a virtual server, causing the Traffic Management Microkernel (TMM) to terminate and disrupt traffic (DoS). Exploitation details are not provided in the documents. Affected/fixed status per F5 advisory: BIG-IP (all modules) 2...

K000160945: BIG-IP DNS Cache vulnerability CVE-2026-39458

Security Advisory Description When a BIG-IP DNS profile enabled with DNS cache is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate. CVE-2026-39458 Impact Traffic is disrupted while the TMM process restarts. This vulnerability allows...

SUSE CVE-2026-2291

dnsmasqs extractname function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS...

ALPINE-CVE-2026-2291

dnsmasqs extractname function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS...

CVE-2026-2291

dnsmasqs extractname function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS...

CVE-2026-2291

dnsmasqs extractname function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS...

CVE-2026-2291 CVE-2026-2291

dnsmasqs extractname function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS...

CVE-2026-2291 CVE-2026-2291

dnsmasqs extractname function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS...

PT-2026-39648

Name of the Vulnerable Software and Affected Versions dnsmasq versions 2.73 through 2.92 Description A heap buffer overflow exists in the DNS cache when processing DNS responses. The extract name function can be abused because the software expands certain characters into longer escape sequences...

OESA-2026-2194 python-aiohttp security update

Async http client/server framework asyncio. Security Fixes: Insufficient restrictions in header/trailer handling could cause uncapped memory usage.CVE-2026-22815 An unbounded DNS cache could result in excessive memory usage possibly resulting in a DoS situation.CVE-2026-34513 An attacker who...

openSUSE 16 Security Update : erlang (openSUSE-SU-2026:20607-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20607-1 advisory. Security issues fixed: - CVE-2026-21620: improper isolation and compartmentalization can lead to TFTP relative path traversal and remote arbitra...

OPENSUSE-SU-2026:20607-1 Security update for erlang

This update for erlang fixes the following issues: Security issues fixed: - CVE-2026-21620: improper isolation and compartmentalization can lead to TFTP relative path traversal and remote arbitrary reads/writes bsc1258663. - CVE-2026-23941: improper handling of duplicate Content-Length headers in...

CVE-2025-71058

Dual DHCP DNS Server 8.01 improperly accepts and caches UDP DNS responses without validating that the response originates from a legitimate configured upstream DNS server. The implementation matches responses primarily by TXID and inserts results into the cache, enabling a remote attacker to inje...

CVE-2026-28810

Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel inetres, inetdb modules allows DNS Cache Poisoning. The built-in DNS resolver inetres uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization...