CVE-2025-38001

CVE-2025-38001 Drama Familiar de RBTree Use-After-Free en HFSC Eltree de Linux - PoC para Debian 12 Este PoC utiliza un ataque de solo datos a nivel de página basado en transformaciones de RBTree para comprometer el sistema. El exploit es portátil y funciona en todas las instancias de kernelCTF L...

CVE-2025-38001

CVE-2025-38001---Linux-Kernel-HFSC-RBTree-Use-After-Free-Research Este repositorio contiene un Proof of Concept PoC para la vulnerabilidad de seguridad CVE-2025-38001 que ataca el módulo HFSC en el kernel de Linux. Creado específicamente como material de estudio para memory corruption en el kerne...

Rocky Linux 8 [CIQ] Security Update: kernel-rt / kernel-rt-core / kernel-rt-debug / kernel-rt-debug-core / etc Multiple Vulnerabilities (crlsa-2025_12753)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202512753 advisory. kernel: HID: intel-ish-hid: Fix use-after-free issue in ishtphidremove CVE-2025-21928 kernel: memstick: rtsxusbms: Fix slab-use-after-free in...

Rocky Linux 10.0 [CIQ] Security Update: kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (crlsa-2025_11855)

The Rocky Linux 10.0 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202511855 advisory. kernel: RDMA/mlx5: Fix pagesize variable overflow CVE-2025-22091 kernel: ext4: fix out-of-bound read in ext4xattrinodedecrefall CVE-2025-22121 kernel:...

Rocky Linux 8 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (crlsa-2025_12752)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202512752 advisory. kernel: HID: intel-ish-hid: Fix use-after-free issue in ishtphidremove CVE-2025-21928 kernel: memstick: rtsxusbms: Fix slab-use-after-free in...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netsched: hfsc: Fixed a UAF vulnerability in class handling This patch addresses a Use-After-Free vulnerability in the HFSC qdisc class handling. The issue arises due to a time-of-check/time-of-use condition in hfscchangeclass,...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: schhfsc: made hfscqlennotify idempotent. hfscqlennotify itself is not idempotent, and it is not friendly to its callers, like fqcodeldequeue. We need to make it idempotent to ease the work of qdisctreereducebacklog callers: 1...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

A use-after-free vulnerability exists in the Linux kernel’s net/sched: schhfsc HFSC qdisc traffic control component, which can be exploited to achieve local privilege escalation. If a class with a link-sharing curve i.e., with the HFSCFSC flag set has a parent without a link-sharing curve, then...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098684)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098684 advisory. In the Linux kernel, the following vulnerability has been resolved: netsched: hfsc: Fix a UAF vulnerability in class handling This patch fixes a Use-After-Free...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098756)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098756 advisory. In the Linux kernel, the following vulnerability has been resolved: schhfsc: make hfscqlennotify idempotent hfscqlennotify is not idempotent either and not friendly ...

CVE-2026-74284

A flaw was found in the Linux kernel's Hierarchical Fair Service Curve HFSC queueing discipline schhfsc. When a child qdisc drops its last packets, the updatevf function can be called twice for the same class, causing it to be marked passive multiple times. This double transition can lead to a...

Linux Distros Unpatched Vulnerability : CVE-2026-74284

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: schhfsc: Don't make class passive twice updatevf is called from two places for the same class during a single dequeue when the class's child qdisc e....

CVE-2026-74284

In the Linux kernel, the following vulnerability has been resolved: net/sched: schhfsc: Don't make class passive twice updatevf is called from two places for the same class during a single dequeue when the class's child qdisc e.g. codel/fqcodel drops its last packets while dequeuing: 1. The child...

PT-2026-72720

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Hierarchical Fair Service Curve HFSC scheduler where a class can be marked as passive twice during a single dequeue operation. This occurs when the child qdisc dro...

EulerOS 2.0 SP12 : kernel (EulerOS-SA-2026-2595)

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : Input: alps - fix use-after-free bugs caused by dev3registerworkCVE-2025-68822 ext4: reject mount if bigalloc with sfirstdatablock !=...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013480)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013480 advisory. In the Linux kernel, the following vulnerability has been resolved: netsched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc As described in...

SUSE CVE-2026-31423

In the Linux kernel, the following vulnerability has been resolved: net/sched: schhfsc: fix divide-by-zero in rtscmin m2sm converts a u32 slope to a u64 scaled value. For large inputs e.g. m1=4000000000, the result can reach 2^32. rtscmin stores the difference of two such u64 values in a u32...

CVE-2026-31423

In the Linux kernel, the following vulnerability has been resolved: net/sched: schhfsc: fix divide-by-zero in rtscmin m2sm converts a u32 slope to a u64 scaled value. For large inputs e.g. m1=4000000000, the result can reach 2^32. rtscmin stores the difference of two such u64 values in a u32...

CVE-2026-31423

In the Linux kernel, the following vulnerability has been resolved: net/sched: schhfsc: fix divide-by-zero in rtscmin m2sm converts a u32 slope to a u64 scaled value. For large inputs e.g. m1=4000000000, the result can reach 2^32. rtscmin stores the difference of two such u64 values in a u32...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from a zero-division error in the rtscmin function of the schhfsc module, potentially leading to a...