kernel: sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue()

A flaw was found in the HFSC queueing discipline implementation in the Linux kernel. When a packet is enqueued and the child qdisc's peek function is called before properly updating the HFSC queue's length and backlog counters, a race condition can occur. In some cases, the peek operation may...

RHEL 8 : kpatch-patch-4_18_0-553_16_1, kpatch-patch-4_18_0-553_30_1, kpatch-patch-4_18_0-553_40_1, kpatch-patch-4_18_0-553_53_1, and kpatch-patch-4_18_0-553_72_1 (RHSA-2025:16582)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:16582 advisory. This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a running kernel. This patc...

CLSA-2025-1758010922 Fix of 51 CVEs

CVE-url: https://ubuntu.com/security/CVE-2025-38000 - schhfsc: Fix qlen accounting bug when using peek in hfscenqueue CVE-url: https://ubuntu.com/security/CVE-2024-57996 // CVE-url: https://ubuntu.com/security/CVE-2025-37752 - netsched: schsfq: move the limit validation Focal update: v5.4.285...

Linux Distros Unpatched Vulnerability : CVE-2025-39766

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition:...

SUSE-SU-2025:03213-1 Security update for the Linux Kernel (Live Patch 12 for SLE 15 SP6)

This update for the Linux Kernel 6.4.0-1506002353 fixes several issues. The following security issues were fixed: - CVE-2025-38087: net/sched: fix use-after-free in tapriodevnotifier bsc1245504. - CVE-2025-38001: netsched: hfsc: Address reentrant enqueue adding class to eltree twice bsc1244235. -...

SUSE-SU-2025:03209-1 Security update for the Linux Kernel (Live Patch 4 for SLE 15 SP6)

This update for the Linux Kernel 6.4.0-1506002322 fixes several issues. The following security issues were fixed: - CVE-2025-38087: net/sched: fix use-after-free in tapriodevnotifier bsc1245504. - CVE-2025-21999: proc: fix UAF in procgetinode bsc1242579. - CVE-2025-38001: netsched: hfsc: Address...

net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit

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SUSE SLES15 Security Update : kernel (Live Patch 21 for SLE 15 SP5) (SUSE-SU-2025:03185-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03185-1 advisory. This update for the Linux Kernel 5.14.21-1505005588 fixes several issues. The following security issues were fixed: - CVE-2025-21999: proc: fi...

SUSE CVE-2025-39766

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition: !cl-leaf.q-q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb...

SUSE-SU-2025:03195-1 Security update for the Linux Kernel (Live Patch 27 for SLE 15 SP5)

This update for the Linux Kernel 5.14.21-15050055110 fixes several issues. The following security issues were fixed: - CVE-2025-38001: netsched: hfsc: Address reentrant enqueue adding class to eltree twice bsc1244235. - CVE-2025-38000: schhfsc: Fix qlen accounting bug when using peek in hfscenque...

SUSE-SU-2025:03190-1 Security update for the Linux Kernel (Live Patch 17 for SLE 15 SP5)

This update for the Linux Kernel 5.14.21-1505005573 fixes several issues. The following security issues were fixed: - CVE-2025-21999: proc: fix UAF in procgetinode bsc1242579. - CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF bsc1237930. - CVE-2025-38001: netsched: hfsc: Address reentra...

SUSE-SU-2025:03186-1 Security update for the Linux Kernel (Live Patch 19 for SLE 15 SP5)

This update for the Linux Kernel 5.14.21-1505005580 fixes several issues. The following security issues were fixed: - CVE-2025-21999: proc: fix UAF in procgetinode bsc1242579. - CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF bsc1237930. - CVE-2025-38001: netsched: hfsc: Address reentra...

SUSE-SU-2025:03184-1 Security update for the Linux Kernel (Live Patch 40 for SLE 15 SP4)

This update for the Linux Kernel 5.14.21-15040024164 fixes several issues. The following security issues were fixed: - CVE-2025-21999: proc: fix UAF in procgetinode bsc1242579. - CVE-2025-38001: netsched: hfsc: Address reentrant enqueue adding class to eltree twice bsc1244235. - CVE-2025-38000:...

Security update for the Linux Kernel (Live Patch 33 for SLE 15 SP4)

This update for the Linux Kernel 5.14.21-15040024141 fixes several issues. The following security issues were fixed: CVE-2025-21999: proc: fix UAF in procgetinode bsc1242579. CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF bsc1237930. CVE-2025-38001: netsched: hfsc: Address reentrant...

Security update for the Linux Kernel (Live Patch 39 for SLE 15 SP4)

This update for the Linux Kernel 5.14.21-15040024161 fixes several issues. The following security issues were fixed: CVE-2025-21999: proc: fix UAF in procgetinode bsc1242579. CVE-2025-38001: netsched: hfsc: Address reentrant enqueue adding class to eltree twice bsc1244235. CVE-2025-38000: schhfsc...

AZL-73962 CVE-2025-39766 affecting package kernel for versions less than 5.15.200.1-1

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition: !cl-leaf.q-q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb...

CVE-2025-39766

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition: !cl-leaf.q-q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb...

AZL-67232 CVE-2025-39766 affecting package kernel for versions less than 6.6.104.2-1

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition: !cl-leaf.q-q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb...

DEBIAN-CVE-2025-39766

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition: !cl-leaf.q-q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb...

UBUNTU-CVE-2025-39766

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition: !cl-leaf.q-q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb...