CVE-2025-38177

CVE-2025-38177 affects the Linux kernel’s scheduling subsystem (sch_hfsc). The documented fix makes hfsc_qlen_notify() idempotent to improve safety for callers such as qdisc_tree_reduce_backlog(). The described changes include guarding update_vf() (checking cl_nactive) and safely removing RB node...

CVE-2025-38177 sch_hfsc: make hfsc_qlen_notify() idempotent

In the Linux kernel, the following vulnerability has been resolved: schhfsc: make hfscqlennotify idempotent hfscqlennotify is not idempotent either and not friendly to its callers, like fqcodeldequeue. Let's make it idempotent to ease qdisctreereducebacklog callers' life: 1. updatevf decreases...

CVE-2025-38177 sch_hfsc: make hfsc_qlen_notify() idempotent

In the Linux kernel, the following vulnerability has been resolved: schhfsc: make hfscqlennotify idempotent hfscqlennotify is not idempotent either and not friendly to its callers, like fqcodeldequeue. Let's make it idempotent to ease qdisctreereducebacklog callers' life: 1. updatevf decreases...

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 the Linux kernel that stems from the hfscqlennotify non-idempotent operation, which could lead to resource management issues...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

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 – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: schhtb: Make htbqlennotify idempotent. htbqlennotify always disactivates the HTB class, and actually might trigger a warning if it is already disactivated. Therefore, it is not idempotent and is not friendly to its callers, like...

SUSE CVE-2025-37932

In the Linux kernel, the following vulnerability has been resolved: schhtb: make htbqlennotify idempotent htbqlennotify always deactivates the HTB class and in fact could trigger a warning if it is already deactivated. Therefore, it is not idempotent and not friendly to its callers, like...

SUSE CVE-2025-37953

In the Linux kernel, the following vulnerability has been resolved: schhtb: make htbdeactivate idempotent Alan reported a NULL pointer dereference in htbnextrbnode after we made htbqlennotify idempotent. It turns out in the following case it introduced some regression: htbdequeuetree: |-...

DEBIAN-CVE-2025-37953

In the Linux kernel, the following vulnerability has been resolved: schhtb: make htbdeactivate idempotent Alan reported a NULL pointer dereference in htbnextrbnode after we made htbqlennotify idempotent. It turns out in the following case it introduced some regression: htbdequeuetree: |-...

CVE-2025-37932

In the Linux kernel, the following vulnerability has been resolved: schhtb: make htbqlennotify idempotent htbqlennotify always deactivates the HTB class and in fact could trigger a warning if it is already deactivated. Therefore, it is not idempotent and not friendly to its callers, like...

DEBIAN-CVE-2025-37932

In the Linux kernel, the following vulnerability has been resolved: schhtb: make htbqlennotify idempotent htbqlennotify always deactivates the HTB class and in fact could trigger a warning if it is already deactivated. Therefore, it is not idempotent and not friendly to its callers, like...

UBUNTU-CVE-2025-37932

In the Linux kernel, the following vulnerability has been resolved: schhtb: make htbqlennotify idempotent htbqlennotify always deactivates the HTB class and in fact could trigger a warning if it is already deactivated. Therefore, it is not idempotent and not friendly to its callers, like...

CVE-2025-37953 sch_htb: make htb_deactivate() idempotent

In the Linux kernel, the following vulnerability has been resolved: schhtb: make htbdeactivate idempotent Alan reported a NULL pointer dereference in htbnextrbnode after we made htbqlennotify idempotent. It turns out in the following case it introduced some regression: htbdequeuetree: |-...

CVE-2025-37932

The CVE-2025-37932 issue affects the Linux kernel’s HTB qdisc: htb_qlen_notify() was not idempotent and could deactivate an HTB class or trigger a warning if called when already deactivated. The fix ports the function to be idempotent, easing callers such as fq_codel_dequeue() and qdisc_tree_redu...

CVE-2025-37932 sch_htb: make htb_qlen_notify() idempotent

In the Linux kernel, the following vulnerability has been resolved: schhtb: make htbqlennotify idempotent htbqlennotify always deactivates the HTB class and in fact could trigger a warning if it is already deactivated. Therefore, it is not idempotent and not friendly to its callers, like...

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 the Linux kernel that stems from a non-idempotent htbqlennotify in schhtb...

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, which stems from htbdeactivate non-idempotent in schhtb...

SUSE CVE-2025-37798

In the Linux kernel, the following vulnerability has been resolved: codel: remove sch-q.qlen check before qdisctreereducebacklog After making all -qlennotify callbacks idempotent, now it is safe to remove the check of qlen!=0 from both fqcodeldequeue and codelqdiscdequeue...

DEBIAN-CVE-2025-37798

In the Linux kernel, the following vulnerability has been resolved: codel: remove sch-q.qlen check before qdisctreereducebacklog After making all -qlennotify callbacks idempotent, now it is safe to remove the check of qlen!=0 from both fqcodeldequeue and codelqdiscdequeue...

CVE-2025-37798

CVE-2025-37798 affects the Linux kernel networking code. The fix removes the qlen check in fq_codel_dequeue() and codel_qdisc_dequeue() after making sch->qlen_notify() callbacks idempotent. The description indicates the vulnerability related to backlog/queue length handling in qdisc code (code...