Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: netsched: hfsc: Fixed a potential UAF in hfscdequeue. Similarly to the previous patch, we also need to properly protect hfscdequeue. However, for this issue, we do not have a reliable way to reproduce the problem...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: netsched: drr: A double addition was corrected in the class, where netem is a child qdisc. As described in Gerrard’s report 1, there are use cases where a netem child qdisc can make the parent qdisc’s enqueue callback reentrant. ...

Security update for the Linux Kernel (Live Patch 24 for SLE 15 SP5)

This update for the Linux Kernel 5.14.21-1505005597 fixes several issues. The following security issues were fixed: CVE-2024-58013: Bluetooth: MGMT: Fix slab-use-after-free Read in mgmtremoveadvmonitorsync bsc1239096. CVE-2024-57996: netsched: schsfq: do not allow 1 packet limit bsc1239077. Patch...

UBUNTU-CVE-2025-37992

In the Linux kernel, the following vulnerability has been resolved: netsched: Flush gsoskb list too during -change Previously, when reducing a qdisc's limit via the -change operation, only the main skb queue was trimmed, potentially leaving packets in the gsoskb list. This could result in NULL...

PT-2025-24274

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to the fix included in commit 141d34391abbb315d68556b7c67ad97885407547. Description The Linux kernel contains a vulnerability in the net sched subsystem, specifically within the HFSC Hierarchical Fair Queuing...

DEBIAN-CVE-2025-37913

In the Linux kernel, the following vulnerability has been resolved: netsched: qfq: Fix double list add in class with netem as child qdisc As described in Gerrard's report 1, there are use cases where a netem child qdisc will make the parent qdisc's enqueue callback reentrant. In the case of qfq,...

UBUNTU-CVE-2025-37913

In the Linux kernel, the following vulnerability has been resolved: netsched: qfq: Fix double list add in class with netem as child qdisc As described in Gerrard's report 1, there are use cases where a netem child qdisc will make the parent qdisc's enqueue callback reentrant. In the case of qfq,...

CVE-2025-37915

CVE-2025-37915 affects the Linux kernel’s net_sched code, specifically the drr scheduler when a netem child qdisc is involved. The issue was a double addition of the same classifier to the active_list, which could cause memory corruption due to reentrancy in the parent qdisc enqueue path (not a U...

kernel: net/sched: accept TCA_STAB only for root qdisc

In the Linux kernel, the following vulnerability has been resolved: net/sched: accept TCASTAB only for root qdisc Most qdiscs maintain their backlog using qdiscpktlenskb on the assumption it is invariant between the enqueue and dequeue handlers. Unfortunately syzbot can crash a host rather easily...

net: sched: Disallow replacing of child qdisc from one parent to another

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DEBIAN-CVE-2022-49921

In the Linux kernel, the following vulnerability has been resolved: net: sched: Fix use after free in redenqueue We can't use "skb" again after passing it to qdiscenqueue. This is basically identical to commit 2f09707d0c97 "schsfb: Also store skb len before calling child enqueue"...

CVE-2025-37752

In the Linux kernel, the following vulnerability has been resolved: netsched: schsfq: move the limit validation It is not sufficient to directly validate the limit on the data that the user passes as it can be updated based on how the other parameters are changed. Move the check at the end of the...

The vulnerability of the cakeDrop() function in the net/sched/sch_cake.c module of the network scheduling subsystem of the Linux operating system allows a hacker to cause a service failure.

The vulnerability of the cakeDrop function in the net/sched/schcake.c module of the network scheduling subsystem of the Linux operating system is related to incomplete cleanup of temporal or auxiliary resources. Exploiting this vulnerability can allow an attacker to cause a service failure...

UBUNTU-CVE-2025-21971

In the Linux kernel, the following vulnerability has been resolved: netsched: Prevent creation of classes with TCHROOT The function qdisctreereducebacklog uses TCHROOT as a termination condition when traversing up the qdisc tree to update parent backlog counters. However, if a class is created wi...

DEBIAN-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...

CVE-2025-21857

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsapi: fix error handling causing NULL dereference tcfextsmisscookiebasealloc calls xaalloccyclic which can return 1 if the allocation succeeded after wrapping. This was treated as an error, with value 1 returned to...

Linux Distros Unpatched Vulnerability : CVE-2024-57996

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - netsched: schsfq: don't allow 1 packet limit The current implementation does not work correctly with a limit of 1. iproute2 actually checks for this and this...

Linux Distros Unpatched Vulnerability : CVE-2021-47595

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: net/sched: schets: don't remove idle classes from the round-robin list Shuang reported that...

SUSE CVE-2022-49183

In the Linux kernel, the following vulnerability has been resolved: net/sched: actct: fix ref leak when switching zones When switching zones or network namespaces without doing a ct clear in between, it is now leaking a reference to the old ct entry. That's because tcfctskbnfctcached returns fals...

UBUNTU-CVE-2022-49183

In the Linux kernel, the following vulnerability has been resolved: net/sched: actct: fix ref leak when switching zones When switching zones or network namespaces without doing a ct clear in between, it is now leaking a reference to the old ct entry. That's because tcfctskbnfctcached returns fals...