Security Bulletin:UltraJSON Memory Leak Fix in ujson.dump() Prior to 5.12.1

Summary UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.12.1, when ujson.dump writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write...

postgresql: PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory

A flaw was found in PostgreSQL libpq. A server superuser can exploit a buffer overflow vulnerability in the PQfn function, which is used by client functions such as loexport, loread, lolseek64, and lotell64. This allows the superuser to send an arbitrarily large response, overwriting the client's...

CVE-2026-18477 Tar: tar: toctou in incremental dumpdir 'x' rename handling allows restore path escape

A TOCTOU Time-of-Check Time-of-Use vulnerability in GNU tar's incremental dumpdir 'X' rename handling allows a local attacker with write access to a directory being backed up to influence the restore process if the attacker has access to the system where the restore is being performed. During...

OPENSUSE-SU-2026:21518-1 Security update for python-ujson

This update for python-ujson fixes the following issue: - CVE-2026-44660: failing to decrement a serialized JSON object during a write exception in ujson.dump can lead to memory leaks bsc1270301...

openSUSE 16 Security Update : perl-YAML-Syck (openSUSE-SU-2026:21497-1)

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21497-1 advisory. Changes in perl-YAML-Syck: - updated to 1.470.0 1.47 Security - Fix four libsyck memory-safety CVEs reachable from the default YAML::Syck::Load...

abrt: ChownProblemDir succeeds during active post-create event processing due to inadequate locking

A race condition was found in the abrt-dbus D-Bus service's ChownProblemDir method. ChownProblemDir opens the dump directory with DDOPENREADONLY and calls ddchown to change ownership of all files to the caller's uid, succeeding even while post-create event handlers hold a write lock. This allows ...

Important: Red Hat Security Advisory: abrt security update

An update for abrt is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. 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...

abrt: TOCTOU race condition in abrt-dbus SetElement allows arbitrary file writes to dump directories

A time-of-check time-of-use TOCTOU race condition was found in the abrt-dbus D-Bus service's SetElement method. Between dump directory creation and post-create event execution, any local user can call SetElement to write arbitrary text files into the root-owned dump directory, bypassing package...

abrt: TOCTOU race condition in abrt-dbus SetElement allows arbitrary file writes to dump directories

A time-of-check time-of-use TOCTOU race condition was found in the abrt-dbus D-Bus service's SetElement method. Between dump directory creation and post-create event execution, any local user can call SetElement to write arbitrary text files into the root-owned dump directory, bypassing package...

abrt: ChownProblemDir succeeds during active post-create event processing due to inadequate locking

A race condition was found in the abrt-dbus D-Bus service's ChownProblemDir method. ChownProblemDir opens the dump directory with DDOPENREADONLY and calls ddchown to change ownership of all files to the caller's uid, succeeding even while post-create event handlers hold a write lock. This allows ...

abrt: TOCTOU race condition in abrt-dbus SetElement allows arbitrary file writes to dump directories

A time-of-check time-of-use TOCTOU race condition was found in the abrt-dbus D-Bus service's SetElement method. Between dump directory creation and post-create event execution, any local user can call SetElement to write arbitrary text files into the root-owned dump directory, bypassing package...

abrt: TOCTOU race condition in abrt-dbus SetElement allows arbitrary file writes to dump directories

A time-of-check time-of-use TOCTOU race condition was found in the abrt-dbus D-Bus service's SetElement method. Between dump directory creation and post-create event execution, any local user can call SetElement to write arbitrary text files into the root-owned dump directory, bypassing package...

VulnCheck KEV: CVE-2026-3836

A local, unprivileged attacker can exploit a path traversal flaw in the D-Bus locale configuration, crashing dnf5daemon-server via a crafted string. This can lead to a DoS with a core dump...

SUSE CVE-2026-45711

Mailpit is an email testing tool and API for developers. Prior to version 1.30.0, the mailpit dump --http sub-command downloads every message from a remote Mailpit instance and writes each one as .eml inside the user-supplied output directory. The message ID field is taken verbatim from the JSON...

The vulnerabilities of the functions batadv_bla_claim_dump_entry() and batadv_bla_backbone_dump() in the net/batman-adv/bridge_loop_avoidance.c module of the Linux kernel allow a hacker to trigger a service failure.

The vulnerability of the functions batadvblaclaimdumpentry and batadvblabackbonedump in the net/batman-adv/bridgeloopavoidance.c module of the Linux kernel is related to the use of pointers. Exploiting this vulnerability could allow an attacker to cause a service failure...

FreeBSD : FreeBSD -- Race condition in ELF core dump segment counting (ced14fa7-8bb8-11f1-a6ab-bc241121aa0a)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the ced14fa7-8bb8-11f1-a6ab-bc241121aa0a advisory. The ELF core dump code counted the number of dumpable VM map entries, allocated a buffer for the...

CVE-2026-10684

In subsys/debug/coredump/coredumpshell.c, printcoredumphdr used the 16-bit tgtcode field of a stored Zephyr coredump header directly as an index into coredumptargetcode2str, a fixed 7-element array of string pointers, with no bounds check. A stored coredump whose tgtcode is = 7 causes an...

CVE-2026-10684 Out-of-bounds read in coredump shell when printing stored-dump target code

In subsys/debug/coredump/coredumpshell.c, printcoredumphdr used the 16-bit tgtcode field of a stored Zephyr coredump header directly as an index into coredumptargetcode2str, a fixed 7-element array of string pointers, with no bounds check. A stored coredump whose tgtcode is = 7 causes an...

Security update for python-ujson

This update for python-ujson fixes the following issue: CVE-2026-44660: failing to decrement a serialized JSON object during a write exception in ujson.dump can lead to memory leaks bsc1270301. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST...

OPENSUSE-SU-2026:21497-1 Security update for perl-YAML-Syck

This update for perl-YAML-Syck fixes the following issues: Changes in perl-YAML-Syck: - updated to 1.470.0 1.47 Security - Fix four libsyck memory-safety CVEs reachable from the default YAML::Syck::Load path on untrusted input with no special flags reported by Paul Johnson via CPANSec, PR 213: -...