PT-2025-27739

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A race condition exists in the Linux kernel's bpf and sockmap functionality. The issue arises when the sk-sk socket is not locked or referenced in the backlog thread, and during the ca...

kernel: net: sched: fix ordering of qlen adjustment

In the Linux kernel, the following vulnerability has been resolved: net: sched: fix ordering of qlen adjustment Changes to sch-q.qlen around qdisctreereducebacklog need to happen before a call to said function because otherwise it may fail to notify parent qdiscs when the child is about to become...

kernel: ppp: do not assume bh is held in ppp_channel_bridge_input()

In the Linux kernel, the following vulnerability has been resolved: ppp: do not assume bh is held in pppchannelbridgeinput Networking receive path is usually handled from BH handler. However, some protocols need to acquire the socket lock, and packets might be stored in the socket backlog is the...

kernel: sch/netem: fix use after free in netem_dequeue

A use-after-free vulnerability was found in the Linux kernel. If netemdequeue enqueues a packet to inner qdisc and that qdisc returns NETXMITSTOLEN, the packet is dropped but qdisctreereducebacklog is not called to update the parent's q.qlen...

Configure a Proper Value for audit_backlog_limit

auditbackloglimit sets the buffer queue length for audit events awaiting transfer to the audit service. The default value is 64. If the queue is full, audit events are discarded and an alarm log is generated, indicating that the queue is full. If the value is too small, audit events may be lost. ...

netem: Update sch->q.qlen before qdisc_tree_reduce_backlog()

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AZL-69725 CVE-2025-37798 affecting package kernel for versions less than 5.15.200.1-1

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...

UBUNTU-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...

SUSE CVE-2025-37757

In the Linux kernel, the following vulnerability has been resolved: tipc: fix memory leak in tipclinkxmit In case the backlog transmit queue for system-importance messages is overloaded, tipclinkxmit returns -ENOBUFS but the skb list is not purged. This leads to memory leak and failure when a skb...

DEBIAN-CVE-2025-37757

In the Linux kernel, the following vulnerability has been resolved: tipc: fix memory leak in tipclinkxmit In case the backlog transmit queue for system-importance messages is overloaded, tipclinkxmit returns -ENOBUFS but the skb list is not purged. This leads to memory leak and failure when a skb...

UBUNTU-CVE-2025-37757

In the Linux kernel, the following vulnerability has been resolved: tipc: fix memory leak in tipclinkxmit In case the backlog transmit queue for system-importance messages is overloaded, tipclinkxmit returns -ENOBUFS but the skb list is not purged. This leads to memory leak and failure when a skb...

Important: kernel-livepatch-6.1.127-135.201

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: netem: Update sch-q.qlen before qdisctreereducebacklog CVE-2025-21703 Affected Packages: kernel-livepatch-6.1.127-135.201 Issue Correction: Please ensure you have live patching enabled. Run dnf update...

Important: kernel-livepatch-5.10.234-225.895

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: netem: Update sch-q.qlen before qdisctreereducebacklog CVE-2025-21703 Affected Packages: kernel-livepatch-5.10.234-225.895 Issue Correction: Please ensure you have live patching enabled. Run yum update...

Important: kernel-livepatch-5.10.233-224.894

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: netem: Update sch-q.qlen before qdisctreereducebacklog CVE-2025-21703 Affected Packages: kernel-livepatch-5.10.233-224.894 Issue Correction: Please ensure you have live patching enabled. Run yum update...

SUSE CVE-2020-36789

In the Linux kernel, the following vulnerability has been resolved: can: dev: cangetechoskb: prevent call to kfreeskb in hard IRQ context If a driver calls cangetechoskb during a hardware IRQ which is often, but not always, the case, the 'WARNONinirq' in net/core/skbuff.cskbreleaseheadstate might...

PT-2025-18438

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak issue has been identified in the Linux kernel, specifically in the tipc link xmit function. When the backlog transmit queue for system-importance messages is overloaded, ti...

PT-2025-22193

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability in the Linux kernel has been resolved. The issue is related to the htb qlen notify function, which always deactivates the HTB class and could trigger a warning if it is...

SUSE 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...