Vulnerability of components of Linux operating system’s kernel’s net/sched module, allowing a hacker to cause a service failure

The vulnerability of the net/sched components in the Linux operating system’s kernel is related to resource management errors. Exploiting this vulnerability can allow an attacker to cause service failures...

PT-2025-22175

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability in the Linux kernel has been resolved, related to the net sched component, specifically the qfq queueing discipline. The issue arises when a netem child qdisc causes the...

PT-2025-22176

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability in the Linux kernel has been resolved, related to the net sched: ets, where a netem child qdisc can cause the parent qdisc's enqueue callback to be reentrant. This can le...

net/sched: cls_api: fix error handling causing NULL dereference

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PT-2025-18433

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.14.0-rc2-syzkaller Description The issue is related to the Linux kernel's net sched module, specifically the sch sfq component. It is not sufficient to directly validate the limit on the data that the user...

CVE-2025-21995

In the Linux kernel, the following vulnerability has been resolved: drm/sched: Fix fence reference count leak The lastscheduled fence leaks when an entity is being killed and adding the cleanup callback fails. Decrement the reference count of prev when dmafenceaddcallback fails, ensuring proper...

CVE-2025-21995 drm/sched: Fix fence reference count leak

In the Linux kernel, the following vulnerability has been resolved: drm/sched: Fix fence reference count leak The lastscheduled fence leaks when an entity is being killed and adding the cleanup callback fails. Decrement the reference count of prev when dmafenceaddcallback fails, ensuring proper...

kernel: net/sched: Fix mirred deadlock on device recursion

In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix mirred deadlock on device recursion The Linux kernel CVE team has assigned CVE-2024-27010 to this issue. Upstream advisory: https://lore.kernel.org/linux-cve-announce/2024050148-CVE-2024-27010-5a68@gregkh/T...

AZL-59966 CVE-2025-21919 affecting package kernel for versions less than 5.15.180.1-1

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Fix potential memory corruption in childcfsrqonlist childcfsrqonlist attempts to convert a 'prev' pointer to a cfsrq. This 'prev' pointer can originate from struct rq's leafcfsrqlist, making the conversion invalid and...

AZL-59919 CVE-2025-21919 affecting package kernel for versions less than 6.6.85.1-2

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Fix potential memory corruption in childcfsrqonlist childcfsrqonlist attempts to convert a 'prev' pointer to a cfsrq. This 'prev' pointer can originate from struct rq's leafcfsrqlist, making the conversion invalid and...

DEBIAN-CVE-2025-21897

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix picktaskscx picking non-queued tasks when it's called without balance a6250aa251ea "schedext: Handle cases where picktaskscx is called without preceding balancescx" added a workaround to handle the cases where...

UBUNTU-CVE-2025-21897

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix picktaskscx picking non-queued tasks when it's called without balance a6250aa251ea "schedext: Handle cases where picktaskscx is called without preceding balancescx" added a workaround to handle the cases where...

UBUNTU-CVE-2025-21919

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Fix potential memory corruption in childcfsrqonlist childcfsrqonlist attempts to convert a 'prev' pointer to a cfsrq. This 'prev' pointer can originate from struct rq's leafcfsrqlist, making the conversion invalid and...

CVE-2025-21919 sched/fair: Fix potential memory corruption in child_cfs_rq_on_list

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Fix potential memory corruption in childcfsrqonlist childcfsrqonlist attempts to convert a 'prev' pointer to a cfsrq. This 'prev' pointer can originate from struct rq's leafcfsrqlist, making the conversion invalid and...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: Squashfs: check the inode number is not the invalid value of zero CVE-2024-26982 In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Acquire kvm-srcu when handling KVMSETVCPUEVENTS...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that stems from a null pointer dereference risk in the GRED scheduler by the sched module...

SUSE CVE-2023-53021

In the Linux kernel, the following vulnerability has been resolved: net/sched: schtaprio: fix possible use-after-free syzbot reported a nasty crash 1 in nettxaction which made little sense until we got a repro. This repro installs a taprio qdisc, but providing an invalid TCARATE attribute...

Important: kernel-livepatch-6.1.124-134.200

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: sched: schcake: add bounds checks to host bulk flow fairness counts CVE-2025-21647 Affected Packages: kernel-livepatch-6.1.124-134.200 Issue Correction: Please ensure you have live patching enabled. Run dnf update...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: netfilter: allow exp not to be removed in nfctfindexpectation CVE-2023-52927 In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free of signing key CVE-2024-53179 In the...

The vulnerability of the qdisc_alloc() function in the net/sched/sch_generic.c module of the network traffic management subsystem of the Linux operating system allows a attacker to cause a service failure.

The vulnerability of the qdiscalloc function in the net/sched/schgeneric.c module of the network traffic management subsystem of the Linux operating system’s kernel is related to insufficient resource locking. Exploiting this vulnerability could allow an attacker to cause a service failure...