Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net/sched: schsfb: Replace the direct dequeue call with peek and qdiscdequeuepeeked. When sfb has children e.g., qfq qdisc whose peek callback is qdiscpeekdequeued, we could encounter a kernel panic. When the parent of such qdisc...

The vulnerability of the sfb_dequeue() function in the net/sched/sch_sfb.c module of the Linux operating system’s network/scheduling subsystem allows a attacker to cause a service failure.

The vulnerability of the sfbdequeue function in the net/sched/schsfb.c module of the Linux operating system’s network/scheduling subsystem is related to pointer manipulation. Exploiting this vulnerability could allow a malicious actor to cause service interruptions remotely...

SUSE CVE-2026-64012

In the Linux kernel, the following vulnerability has been resolved: net/sched: schsfb: Replace direct dequeue call with peek and qdiscdequeuepeeked When sfb has children eg qfq qdisc whose peek callback is qdiscpeekdequeued, we could get a kernel panic. When the parent of such qdiscs eg illustrat...

Linux Distros Unpatched Vulnerability : CVE-2026-64012

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: schsfb: Replace direct dequeue call with peek and qdiscdequeuepeeked When sfb has children eg qfq qdisc whose peek callback is qdiscpeekdequeued, we...

CVE-2026-64012

The CVE affects the Linux kernel net/sched sch_sfb path. When sch_sfb has children (e.g., qfq) whose peek() callback is qdisc_peek_dequeued(), a dequeue on the parent can cause a NULL dereference in the child’s dequeue path, potentially leading to a kernel panic. The fix replaces the direct deque...

CVE-2026-64012 net/sched: sch_sfb: Replace direct dequeue call with peek and qdisc_dequeue_peeked

In the Linux kernel, the following vulnerability has been resolved: net/sched: schsfb: Replace direct dequeue call with peek and qdiscdequeuepeeked When sfb has children eg qfq qdisc whose peek callback is qdiscpeekdequeued, we could get a kernel panic. When the parent of such qdiscs eg illustrat...

EUVD-2026-45585

In the Linux kernel, the following vulnerability has been resolved: net/sched: schsfb: Replace direct dequeue call with peek and qdiscdequeuepeeked When sfb has children eg qfq qdisc whose peek callback is qdiscpeekdequeued, we could get a kernel panic. When the parent of such qdiscs eg illustrat...

CVE-2026-64012: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: schsfb: Replace direct dequeue call with peek and qdiscdequeuepeeked When sfb has children eg qfq qdisc whose peek callback is qdiscpeekdequeued, we could get a kernel panic. When the parent of such qdiscs eg illustrat...

Denial Of Service (DoS)

Linux kernel is vulnerable to Denial Of Service DoS. The vulnerability exists through use after free in the networking code because the schsfb enqueue function used the socket buffer SKB cb field after the same SKB had been enqueued and freed into a child qdisc, allowing an attacker to cause an...

Ubuntu 22.10 : Linux kernel vulnerabilities (USN-5793-3)

The remote Ubuntu 22.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5793-3 advisory. It was discovered that the iouring subsystem in the Linux kernel did not properly perform reference counting in some situations, leading to a use- after-free...

Ubuntu 22.10 : Linux kernel (IBM) vulnerabilities (USN-5793-4)

The remote Ubuntu 22.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5793-4 advisory. It was discovered that the iouring subsystem in the Linux kernel did not properly perform reference counting in some situations, leading to a use- after-free...

Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-5792-2)

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5792-2 advisory. Mingwei Zhang discovered that the KVM implementation for AMD processors in the Linux kernel did not properly handle cache coherency with Secu...

Ubuntu 22.10 : Linux kernel vulnerabilities (USN-5793-1)

The remote Ubuntu 22.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5793-1 advisory. It was discovered that the iouring subsystem in the Linux kernel did not properly perform reference counting in some situations, leading to a use- after-free...

OracleVM 3.4 : kernel-uek (OVMSA-2023-0001)

The remote OracleVM system is missing necessary patches to address security updates: - An issue was found in the Linux kernel in nfconntrackirc where the message handling can be confused and incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted IR...

The vulnerability of the queue insertion function sch_sfb in Linux operating system kernels allows a hacker to cause a service failure.

The vulnerability of the queue insertion function schsfb in Linux operating systems is related to the use of memory after it is freed. Exploiting this vulnerability can allow an attacker to cause a service failure...

Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update is based on upstream 5.15.74 and fixes at least the following security issues: A flaw was found in the Linux kernel. The existing KVM SEV API has a vulnerability that allows a non-root host user-level application to crash the host kernel by creating a confidential guest V...

CVE-2022-3586

CVE-2022-3586 : A use-after-free in the Linux kernel networking path (sch_sfb enqueue function using SKB cb field after enqueueing/freeding into a child qdisc) allows a local, unprivileged user to crash the system, causing a denial of service. Affected component: kernel networking code; root caus...

CVE-2022-3586: Use After Free

A flaw was found in the Linux kernel’s networking code. A use-after-free was found in the way the schsfb enqueue function used the socket buffer SKB cb field after the same SKB had been enqueued and freed into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing...

CVE-2022-3586

A flaw was found in the Linux kernel’s networking code. A use-after-free was found in the way the schsfb enqueue function used the socket buffer SKB cb field after the same SKB had been enqueued and freed into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing...

CVE-2022-3586

A flaw was found in the Linux kernel’s networking code. A use-after-free was found in the way the schsfb enqueue function used the socket buffer SKB cb field after the same SKB had been enqueued and freed into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing...