CVE-2026-31675

CVE-2026-31675 — Linux kernel netem out-of-bounds in packet corruption The issue arises in net/sched: sch_netem where the packet corruption logic selects an index into skb->data using get_random_u32_below(skb_headlen(skb)). For AF_PACKET TX_RING sending fully non-linear packets over an IPIP tu...

CVE-2026-31675 net/sched: sch_netem: fix out-of-bounds access in packet corruption

In the Linux kernel, the following vulnerability has been resolved: net/sched: schnetem: fix out-of-bounds access in packet corruption In netemenqueue, the packet corruption logic uses getrandomu32belowskbheadlenskb to select an index for modifying skb-data. When an AFPACKET TXRING sends fully...

PT-2026-35135

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An out-of-bounds memory access exists in the netem enqueue function within the sch netem scheduler. The issue occurs during packet corruption when get random u32 belowskb headlenskb is...

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 the logic used in schnetem for handling data packets. This logic uses an unconstrained random val...

Linux Distros Unpatched Vulnerability : CVE-2026-31675

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: schnetem: fix out-of-bounds access in packet corruption In netemenqueue, the packet corruption logic uses getrandomu32belowskbheadlenskb to select an...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013865)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013865 advisory. 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...

Unity Linux 20.1050e / 20.1060e Security Update: kernel (UTSA-2026-013398)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013398 advisory. In the Linux kernel, the following vulnerability has been resolved: netem: Update sch-q.qlen before qdisctreereducebacklog qdisctreereducebacklog notifies parent qdi...

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...

Unity Linux 20.1050e / 20.1070e Security Update: kernel (UTSA-2026-011390)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011390 advisory. 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...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-005500)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005500 advisory. In the Linux kernel, the following vulnerability has been resolved: netsched: hfsc: Address reentrant enqueue adding class to eltree twice Savino says: We are writin...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-005490)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005490 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...

CVE-2026-23074

In the Linux kernel, the following vulnerability has been resolved: net/sched: Enforce that teql can only be used as root qdisc Design intent of teql is that it is only supposed to be used as root qdisc. We need to check for that constraint. Although not important, I will describe the scenario th...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netsched: ets: A double addition of the classifier 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 enqueue callback of the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: net/sched: Restricted conditions were added for adding duplicate netems into a qdisc tree. The duplication prevention logic of netemenqueue breaks when a netem resides in a qdisc tree along with other netems. This can lead to ...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netsched: qfq: A double addition of a classifier 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...

Astra Linux – Vulnerability in Linux 6.1

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. ...

Azure Linux 3.0 Security Update: kernel (CVE-2025-37914)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-37914 advisory. - In the Linux kernel, the following vulnerability has been resolved: netsched: ets: Fix double list add in...

Azure Linux 3.0 Security Update: kernel (CVE-2025-37913)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-37913 advisory. - In the Linux kernel, the following vulnerability has been resolved: netsched: qfq: Fix double list add in...

Azure Linux 3.0 Security Update: kernel (CVE-2025-38001)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-38001 advisory. - In the Linux kernel, the following vulnerability has been resolved: netsched: hfsc: Address reentrant enqueu...

Azure Linux 3.0 Security Update: kernel (CVE-2025-37915)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-37915 advisory. - In the Linux kernel, the following vulnerability has been resolved: netsched: drr: Fix double list add in...