CVE-2026-63886

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Validate CHAPR length before base64 decode chapservercomputehash allocates clientdigest as kzallocchap-digestsize and then, for BASE64-encoded responses, passes chapr directly to chapbase64decode without...

CVE-2026-63886

The CVE-2026-63886 entry concerns the Linux kernel SCSI iSCSI path, where chap_server_compute_hash() could overflow a digest buffer during BASE64 decoding. Root cause: chap_r is fed to chap_base64_decode() without validation that the decoded output fits into client_digest (kzalloc(chap->digest...

PT-2026-61207

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the FCoE Fibre Channel over Ethernet control VLAN walker where the fcoe ctlr recv clr vlink function in drivers/scsi/fcoe/fcoe ctlr.c fails to validate the length of F...

PT-2026-61205

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description Two bugs exist in the Text-phase handler of the iSCSI target. The first issue is a buffer overread where the iscsit crc buf function reads 4 bytes past the end of the text in buffer when...

PT-2026-61320

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the SCSI core where the scsi run host queues function fails to process devices in a partially removed state, such as SDEV CANCEL. This occurs because the function reli...

USN-8490-2: Linux kernel (Real-time) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - Block layer subsystem; - Cryptographic API; - DMA engine subsystem; - InfiniBand drivers; -...

USN-8490-1: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - Block layer subsystem; - Cryptographic API; - DMA engine subsystem; - InfiniBand drivers; -...

Ubuntu 24.04 LTS : Linux kernel (HWE) vulnerabilities (USN-8545-1)

"The remote Ubuntu 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8545-1 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws i...

Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-8547-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8547-1 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in...

USN-8548-1 linux-aws, linux-fips, linux-lts-xenial vulnerabilities

It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. CVE-2026-43503 Several security issues...

RLSA-2026:39311 Low: qemu-kvm security 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 Fixes: qemu-kvm: Heap buffer overflow in virtio-blk SCSI request handling...

USN-8547-1 linux-gcp-5.15, linux-intel-iotg-5.15 vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - RISC-V architecture; - Cryptographic API; - InfiniBand drivers; - IOMMU subsystem; - Network drivers; -...

USN-8547-1: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - RISC-V architecture; - Cryptographic API; - InfiniBand drivers; - IOMMU subsystem; - Network drivers; -...

USN-8546-1 linux-raspi vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - Block layer subsystem; - Cryptographic API; - DMA engine subsystem; - InfiniBand drivers; -...

USN-8545-1: Linux kernel (HWE) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - Block layer subsystem; - Cryptographic API; - DMA engine subsystem; - InfiniBand drivers; -...

USN-8545-1 linux-hwe-6.17 vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - Block layer subsystem; - Cryptographic API; - DMA engine subsystem; - InfiniBand drivers; -...

RockyLinux 9 : qemu-kvm (RLSA-2026:39311)

The remote RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:39311 advisory. qemu-kvm: Heap buffer overflow in virtio-blk SCSI request handling CVE-2026-48914 Tenable has extracted the preceding description block directly from the...

Oracle Linux 9 : qemu-kvm (ELSA-2026-39311)

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-39311 advisory. 10.1.0-17.el98.4 - kvm-virtio-blk-add-missing-VIRTIOBLKTSCSICMD-size-ch.patch RHEL-184527 - Resolves: RHEL-184527 CVE-2026-48914 qemu-kvm: Heap buffer overflow...

qemu-kvm: Heap buffer overflow in virtio-blk SCSI request handling

A flaw was found in QEMU's virtio-blk device. The issue arises because the device does not properly validate the size of input descriptors before writing data. A malicious guest with high privileges could exploit this vulnerability by submitting a malformed virtio-blk SCSI request, leading to an...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 10.0 Extended Update 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...