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dCERT published two advisories, 2025-1332 and 2025-1527, warning of multiple vulnerabilities in the Linux kernel. The notices indicate that separate sets of kernel flaws were significant enough to warrant dedicated advisories, underscoring continued security risk in one of the most widely deployed operating system components across servers, cloud infrastructure, appliances, and embedded systems.
While no public synopsis was included in the referenced advisories, the alerts point organizations to review affected kernel versions, assess exposure across Linux-based assets, and apply vendor-provided updates or mitigations. Because kernel vulnerabilities can affect core system security boundaries and stability, unpatched systems may face elevated risk depending on the specific flaws and deployment context.
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21 events from the most recent confirmed update back to the earliest known activity.
dCERT issued advisory 2026-1628 regarding multiple Linux Kernel vulnerabilities that allow an unspecified attack. The reference does not provide additional technical details, affected versions, impact, or remediation information.
dCERT issued advisory 2026-1558 for multiple Linux Kernel vulnerabilities that can allow denial of service. The reference does not provide additional technical details, affected versions, impact, or remediation information.
dCERT issued advisory 2026-1542 for a Linux Kernel vulnerability that can allow bypassing security measures. The reference does not provide additional technical details, affected versions, or remediation information.
dCERT issued advisory 2026-1524 for a Linux Kernel vulnerability that can allow denial of service. The reference does not provide additional technical details, affected versions, impact, or remediation information.
dCERT issued advisory 2026-1491 regarding multiple vulnerabilities in the Linux Kernel. The reference does not provide additional technical details, affected versions, impact, or remediation information.
dCERT issued advisory 2026-1502 for a Linux Kernel vulnerability in Fragnesia that can allow gaining administrative rights. The reference does not provide additional technical details, affected versions, or remediation information.
dCERT issued advisory 2026-1424 regarding multiple vulnerabilities in the Linux Kernel. The reference does not provide additional technical details, affected versions, impact, or remediation information.
dCERT issued advisory 2026-1361 regarding multiple vulnerabilities in the Linux Kernel. The reference does not provide additional technical details, affected versions, impact, or remediation information.
dCERT issued advisory 2026-1273 regarding multiple vulnerabilities in the Linux Kernel. The reference does not provide additional technical details, affected versions, impact, or remediation information.
dCERT issued advisory 2026-1030 for a Linux Kernel vulnerability that can allow denial of service or code execution. The reference does not provide additional technical details, affected versions, or remediation information.
dCERT issued advisory 2025-2238 for multiple Linux Kernel vulnerabilities that can allow denial of service. The reference does not provide additional technical details, affected versions, impact, or remediation information.
dCERT issued advisory 2025-1832 for multiple Linux Kernel vulnerabilities that can allow denial of service. The reference does not provide additional technical details, affected versions, impact, or remediation information.
dCERT issued advisory 2026-0962 regarding multiple vulnerabilities in the Linux Kernel. The reference does not provide additional technical details, affected versions, impact, or remediation information.
dCERT issued advisory 2026-0925 regarding multiple vulnerabilities in the Linux Kernel. The reference does not provide additional technical details, affected versions, impact, or remediation information.
dCERT issued advisory 2026-0893 for multiple Linux Kernel vulnerabilities that can allow denial of service. The reference does not provide additional technical details, affected versions, impact, or remediation information.
dCERT issued advisory 2025-2271 for multiple Linux Kernel vulnerabilities that can allow denial of service. The reference does not provide additional technical details, affected versions, or remediation information.
dCERT issued advisory 2025-2262 regarding multiple vulnerabilities in the Linux Kernel. The reference does not include additional technical details on affected versions, impact, or remediation.
dCERT issued advisory 2025-2313 for a Linux Kernel vulnerability that can allow denial of service. The reference does not provide additional technical details, affected versions, or remediation information.
dCERT issued advisory 2026-0864 regarding multiple vulnerabilities in the Linux Kernel. The reference does not provide additional technical details, affected versions, impact, or remediation information.
dCERT issued advisory 2025-1527 regarding multiple vulnerabilities in the Linux Kernel. The reference does not include additional details on affected versions, impact, or fixes.
dCERT issued advisory 2025-1332 regarding multiple vulnerabilities in the Linux Kernel. No further technical details or remediation information are provided in the reference.
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dCERT issued two advisories for **Linux Kernel** vulnerabilities that can lead to **denial of service**, identifying the issues as advisory `2026-1017` and advisory `2026-1046`. Both notices describe flaws in the kernel that could allow attackers to disrupt system availability, underscoring continued risk to Linux-based servers, appliances, and endpoints that rely on the affected kernel components. While the advisories do not include public synopses, the paired notices indicate separate Linux Kernel denial-of-service issues requiring review by defenders and system owners. Organizations running Linux should track the affected kernel versions referenced by dCERT, prioritize vendor patches or mitigations as they become available, and assess exposure across internet-facing and critical internal systems where service interruption would have operational impact.
Jun 29, 2026
The Linux kernel project published an unusually large batch of **440 vulnerability advisories** over a two-day period, covering flaws across subsystems including DRM/AMDGPU, KVM, RDMA, Bluetooth, Wi‑Fi, SMB, Btrfs, ext4, SPI, media, IPMI, and networking. The disclosures describe memory-safety bugs, race conditions, information leaks, bounds-check failures, integer overflows, `NULL` dereferences, out-of-bounds reads, and use-after-free conditions, with reporting highlighting `ksmbd`, TIPC, and KVM/SEV as areas of potentially higher risk. Most issues were reported after fixes were available or already merged into stable kernel branches, though many advisories had not yet received CVSS scores. Ubuntu subsequently published security notices to address Linux kernel vulnerabilities across multiple supported releases, and the Canadian Centre for Cyber Security issued advisory **AV26-717** urging organizations to review the notices and apply updates. The affected Ubuntu versions listed were **14.04 LTS, 16.04 LTS, 20.04 LTS, 24.04 LTS, and 25.10**, underscoring the broad downstream impact of the kernel disclosure wave and the need for administrators to prioritize distribution-provided kernel patches, especially in environments exposing SMB services, TIPC, or SEV-enabled KVM systems.
Jul 24, 2026
dCERT published two advisories covering **multiple vulnerabilities in `systemd`**, the widely deployed Linux init system and service manager. The notices identify separate batches of flaws affecting `systemd`, indicating an ongoing stream of security issues in a core component used across many Linux distributions and enterprise environments. Because `systemd` is deeply integrated into system startup, service control, logging, and host management, vulnerabilities in the software can have broad operational and security impact depending on the affected component and deployment. Organizations using Linux systems with `systemd` should review the dCERT advisories **2026-0707** and **2026-0815**, determine exposure across their fleets, and prioritize vendor patches or mitigations as they become available.
Jun 29, 2026