Operating systems stack vulnerabilities · Page 82

Denial-of-service vulnerability in the Qt Core QXmlStream parser (QXmlStreamReader) impacts Qt

An attacker able to supply a crafted XML document to an application using QXmlStreamReader can cause disproportionate CPU consumption during parsing, making the application unresponsive (denial of service). Exploitation requires only that the application parse attacker-influenced XML; no authentication, privileges, or user interaction beyond ingesting the input are needed. There is no loss of confidentiality or integrity — no data disclosure, data modification, or code execution — and the impact is contained to the affected process.

• Update to 6.11.2
• Update to 6.11.2+dfsg-5
• Update to 6.8.9

Security update for containerd

This update for containerd fixes the following issues: - CVE-2026-39882: go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp: Memory exhaustion via uncapped HTTP response body reading (bsc#1274214). - CVE-2026-47262: Denial of Service (DoS) condition via a maliciously crafted image (bsc#1268441). - CVE-2026-53488: CRI plugin propagates labels from an image config to a container without validation (bsc#1268430). - CVE-2026-53493: a crafted OCI index graph can force very high CPU/memory usage during PullImage (before container start), causing long ContainerCreating stalls and, at larger sizes, node/runtime instability (bsc#1282

• Update to 1.7.29-slfo.1.1_5.1

Security update for the Linux Kernel (Live Patch 20 for SUSE Linux Enterprise 15 SP7)

This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.53.78 fixes various security issues: The following security issues were fixed: - CVE-2026-63887: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (bsc#1272386). - CVE-2026-68158: libceph: Fix multiplication overflow in decode_new_up_state_weight() (bsc#1276303).

• Update to 4-150700.2.1

Security update for cifs-utils

This update for cifs-utils fixes the following issue: - CVE-2026-104715: mount options injection via CIFS credentials-file parsing (bsc#1284932).

• Update to 7.0-159998.1.1

Security update for the Linux Kernel (Live Patch 30 for SUSE Linux Enterprise 15 SP6)

This update for the SUSE Linux Enterprise Kernel 6.4.0-150600.23.130 fixes various security issues: The following security issues were fixed: - CVE-2026-63795: 9p: avoid putting oldfid in p9_client_walk() error path (bsc#1272136). - CVE-2026-63887: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (bsc#1272386). - CVE-2026-68158: libceph: Fix multiplication overflow in decode_new_up_state_weight() (bsc#1276303).

• Update to 4-150600.2.1

Critical: ca-certificates security update

The ca-certificates package contains a set of Certificate Authority (CA) certificates chosen by the Mozilla Foundation for use with the Internet Public Key Infrastructure (PKI). Security Fix(es): * ca-certificates: Distrust eMudhra intermediate CA certificates due to security concerns (CVE-2026-114406) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

• Update to 0:2026.2.92_v9.0.319-90.3.el9_8

Important: qemu-kvm security, bug fix, and enhancement update

Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Security Fix(es): * qemu-kvm: qemu-guest-agent: Local privilege escalation via symlink attack in guest-ssh-add-authorized-keys (CVE-2026-12080) Bug Fix(es) and Enhancement(s): * qemu-img can't create a qcow2 overlay with 'data_file' feature on top of a file without destroying the original image [rhel-9.8.z] (JIRA:Rocky Linux-164549) * live migration of a VM with a scsi3pr to a node that previously held a reservation on that disk fail

• Update to 7:10.1.0-17.el9_8.9

Critical: grafana-pcp security update

The Grafana plugin for Performance Co-Pilot includes datasources for scalable time series from pmseries and Redis, live PCP metrics and bpftrace scripts from pmdabpftrace, as well as several dashboards. Security Fix(es): * crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031) * net/http: net/http/internal/http2: golang.org/x/net/http2: net/http: Denial of Service via excessive HTTP/2 SETTINGS frames (CVE-2026-78669) * crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943) For more details about the security issue(s), in

• Update to 0:5.1.1-17.el9_8.2

Important: expat security update

Expat is a C library for parsing XML documents. Security Fix(es): * expat: expat: Denial of Service via integer overflow in expat_realloc (CVE-2026-102633) * expat: expat: Information disclosure via heap buffer over-read in XML_ParseBuffer (CVE-2026-77214) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

• Update to 0:2.5.0-6.el9_8.7

Important: httpd security update

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fix(es): * httpd: httpd: HTTP response smuggling via crafted Transfer-Encoding response in mod_proxy_uwsgi (CVE-2026-63718) * httpd: httpd: Denial of Service via integer overflow in mod_dav_fs (CVE-2026-93546) * httpd: httpd: Authentication state corruption via concurrent Digest authentication requests (CVE-2026-73637) * httpd: httpd: unauthorized connection to arbitrary hosts via crafted FTP PASV response (CVE-2026-63045) * httpd: httpd: Arbitrary code execution via oversized Host header in mod_vhost_alias (CVE-2026-63292) * h

• Update to 0:2.4.62-13.el9_8.9

Important: kernel-rt security update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: ipv4: raw: reject IP_HDRINCL packets with ihl < 5 (CVE-2026-64114) * kernel: fuse: re-lock request before returning from fuse_ref_folio() (CVE-2026-64266) * kernel: ipv4: fib: free fib_alias with kfree_rcu() on insert error path (CVE-2026-64572) * kernel: ALSA: seq: close a re-opened queue timer in the destructor (CVE-2026-68202) * kernel: xfs: bounds-check buffer log item's dirty bitmap (CVE-2026-80536) * kernel: inet: frags: strip GSO state from fragments before rea

• Update to 0:4.18.0-553.177.1.rt7.518.el8_10

Important: grafana-pcp security update

The Grafana plugin for Performance Co-Pilot includes datasources for scalable time series from pmseries and Redis, live PCP metrics and bpftrace scripts from pmdabpftrace, as well as several dashboards. Security Fix(es): * crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031) * net/http: net/http/internal/http2: golang.org/x/net/http2: net/http: Denial of Service via excessive HTTP/2 SETTINGS frames (CVE-2026-78669) * crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943) For more details about the security issue(s), in

• Update to 0:5.1.1-19.el8_10

Important: grafana security update

Grafana is an open source, feature rich metrics dashboard and graph editor for Graphite, InfluxDB & OpenTSDB. Security Fix(es): * net/http: golang: golang: Denial of Service via crafted HTTP Range headers (CVE-2026-78667) * crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031) * net/http: net/http/internal/http2: golang.org/x/net/http2: net/http: Denial of Service via excessive HTTP/2 SETTINGS frames (CVE-2026-78669) * crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943) For more details about the security issue(s),

• Update to 0:9.2.10-36.el8_10

Important: flute, libbase, libfonts, libformula, liblayout, libloader, libreoffice, librepository, libserializer, pentaho-libxml, pentaho-reporting-flow-engine, and sac security, bug fix, and enhancement update

SAC is a standard interface for CSS parsers, intended to work with CSS1, CSS2, CSS3 and other CSS derived languages. Security Fix(es): * libreoffice: heap buffer overflow in PDF import stream handling (CVE-2026-63274) * libreoffice: stack buffer overflow in CFF to Type 1 font conversion (CVE-2026-63276) * libreoffice: stack buffer overflow in CFF font hint handling (CVE-2026-63275) * libreoffice: libreoffice: Arbitrary code execution via remote Java database driver (CVE-2026-63277) Bug Fix(es) and Enhancement(s): * [libbase] LibreOffice packages using EOL Java (after November 2026) (JIRA:Rocky Linux-275415) * [flute] LibreOffice packa

• Update to 0:0.2.10-19.el8_10
• Update to 0:1.1.2-20.el8_10
• Update to 0:1.1.3-19.el8_10
• Update to 0:1.1.3-20.el8_10
• Update to 0:1.1.3-21.el8_10
• Update to 0:1.1.3-23.el8_10
• Update to 0:1.3.0-19.OOo31.el8_10
• Update to 1:0.9.4-17.el8_10
• Update to 1:7.1.8.1-3.el8_10

Moderate: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fix(es): * openssh: OpenSSH: SFTP security bypass due to command-line argument parsing flaw (CVE-2026-59997) * openssh: OpenSSH: Undocumented GSSAPIStrictAcceptorCheck behavior impacts security in Windows Active Directory (CVE-2026-59998) * openssh: OpenSSH: Brute-force attacks facilitated due to insufficient authentication delay (CVE-2026-60001) * openssh: OpenSSH: Denial of Service via excessive GSSAPI authentication attempts (CVE-2026-60000)

• Update to 0:8.0p1-34.el8_10

Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ipv4: raw: reject IP_HDRINCL packets with ihl < 5 (CVE-2026-64114) * kernel: fuse: re-lock request before returning from fuse_ref_folio() (CVE-2026-64266) * kernel: ipv4: fib: free fib_alias with kfree_rcu() on insert error path (CVE-2026-64572) * kernel: ALSA: seq: close a re-opened queue timer in the destructor (CVE-2026-68202) * kernel: xfs: bounds-check buffer log item's dirty bitmap (CVE-2026-80536) * kernel: inet: frags: strip GSO state from fragments before reassembly (CVE-2026-80590) * kernel: vfio/pci: clear vdev-

• Update to 0:4.18.0-553.177.1.el8_10

CVE-2026-90458

OpenStack Ironic before 39.0.1 allows DELETE and GET via vendor_passthru, e.g., to delete accounts from the BMC's Redfish service.

• Update to 1:39.0.0-6
• Update to 29.1.1
• Update to 32.1.1
• Update to 35.1.1
• Update to 39.0.1

CVE-2026-89419

OpenStack Ironic before 39.0.1 sometimes allows a user to change the maintenance setting on a node via PATCH to /v1/nodes/{ident} - in other words, not using the specific maintenance endpoint.

• Update to 1:39.0.0-6
• Update to 29.1.1
• Update to 32.1.1
• Update to 35.1.1
• Update to 39.0.1

CVE-2026-115638

OpenStack Ironic through 39.0.1 allows a denial of service via a configdrive that results in a very large amount of uncompressed data, aka a gzip bomb.

Open-iscsi: open-iscsi: ipv6 neighbor discovery missing option length validation in iscsiuio allows arp table poisoning

A flaw was found in the iscsiuio component of open-iscsi. The IPv6 Neighbor Discovery handler accesses link-layer address options at a fixed offset without verifying the packet contains them. Additionally, the ARP table is updated unconditionally with attacker-controlled addresses from the packet headers. An attacker on the same network segment can send a minimal Neighbor Advertisement to poison the ARP table and redirect network traffic.