CVE-2026-90113: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: netdevsim: update queue NAPI association on queue reset In netdevsim, receive queues struct nsimrq embed their own struct napistruct. When queue reset is performed e.g. via queuereset debugfs, nsimqueuestart swaps in a newly...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netdevsim: A trailing zero was added to terminate the string in nsimnexthopbucketactivitywrite. This issue was identified by a static analyzer. We should not forget the trailing zero after copyfromuser if we will perform further...

Astra Linux – Vulnerability in Linux 5.15

A flaw was discovered in the netdevsim device driver of the Linux kernel, related to the scheduling of events. This issue arises due to improper management of a reference count. This could allow an attacker to create a denial-of-service condition on the system...

PT-2026-91334

In the Linux kernel, the following vulnerability has been resolved: tls: device: fix out-of-bounds write in tls append frag Found with syzkaller and a local syzbot instance running on top of a netdevsim TLS offload emulation; tls device.c is otherwise only reachable on a machine with a NIC that...

CVE-2026-80852: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: tls: device: fix out-of-bounds write in tlsappendfrag Found with syzkaller and a local syzbot instance running on top of a netdevsim TLS offload emulation; tlsdevice.c is otherwise only reachable on a machine with a NIC that...

Linux Network Device Drivers Heap Buffer Overflow DoS

The vulnerability of the nsimdevtrapskbbuild function in the drivers/net/netdevsim/dev.c file of the Linux kernel’s network device driver module is related to the access to an uninitialized pointer. Exploiting this vulnerability could allow an attacker to cause a service failure...

EUVD-2026-66566

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsbpf: reject dev-bound programs bound to a different device clsbpfprogfromefd obtained a SCHEDCLS program via bpfproggettypedev but never verified that a device-bound offloaded program's bound netdev matches the TC...

CVE-2026-74736

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsbpf: reject dev-bound programs bound to a different device clsbpfprogfromefd obtained a SCHEDCLS program via bpfproggettypedev but never verified that a device-bound offloaded program's bound netdev matches the TC...

CVE-2026-74736 net/sched: cls_bpf: reject dev-bound programs bound to a different device

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsbpf: reject dev-bound programs bound to a different device clsbpfprogfromefd obtained a SCHEDCLS program via bpfproggettypedev but never verified that a device-bound offloaded program's bound netdev matches the TC...

CVE-2026-74736: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsbpf: reject dev-bound programs bound to a different device clsbpfprogfromefd obtained a SCHEDCLS program via bpfproggettypedev but never verified that a device-bound offloaded program's bound netdev matches the TC...

CVE-2026-74289 ipv4: fib: Don't dump dying fib_info in fib_leaf_notify().

In the Linux kernel, the following vulnerability has been resolved: ipv4: fib: Don't dump dying fibinfo in fibleafnotify. syzbot reported use-after-free in nsimfib4prepareevent. 0 The problem is that the following functions call fibinfohold / refcountinc while dumping fibinfo under RCU, which is...

Linux netdevsim DoS

The vulnerability of the netdevsim components in the Linux operating system’s kernel involves the simultaneous execution using shared resources with incorrect synchronization. Exploiting this vulnerability can allow an attacker to cause service failures...

Linux Network Device Driver Heap Buffer Overflow DoS

The vulnerability of the nsimdevresourcesregister function in the drivers/net/netdevsim/dev.c file of the Linux kernel’s network device driver module is related to the failure to release resources after their useful lifespan has ended. Exploiting this vulnerability could allow an attacker to caus...

netdevsim: zero initialize struct iphdr in dummy sk_buff

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SUSE CVE-2026-52985

In the Linux kernel, the following vulnerability has been resolved: netdevsim: zero initialize struct iphdr in dummy skbuff Syzbot reports a KMSAN uninit-value originating from nsimdevtrapskbbuild, with the allocation also being performed in the same function. Fix this by calling skbputzero inste...

CVE-2026-52985

A flaw was found in the Linux kernel's netdevsim module. An uninitialized memory vulnerability exists in the handling of struct iphdr within a dummy skbuff due to the use of skbput instead of skbputzero. This could lead to unpredictable system behavior, including crashes Denial of Service, or...

Linux Distros Unpatched Vulnerability : CVE-2026-52985

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - netdevsim: zero initialize struct iphdr in dummy skbuff Syzbot reports a KMSAN uninit-value originating from nsimdevtrapskbbuild, with the allocation also being...

EUVD-2026-38853

In the Linux kernel, the following vulnerability has been resolved: netdevsim: zero initialize struct iphdr in dummy skbuff Syzbot reports a KMSAN uninit-value originating from nsimdevtrapskbbuild, with the allocation also being performed in the same function. Fix this by calling skbputzero inste...

CVE-2026-52985

In the Linux kernel, the following vulnerability has been resolved: netdevsim: zero initialize struct iphdr in dummy skbuff Syzbot reports a KMSAN uninit-value originating from nsimdevtrapskbbuild, with the allocation also being performed in the same function. Fix this by calling skbputzero inste...

CVE-2026-52985

In the Linux kernel, the following vulnerability has been resolved: netdevsim: zero initialize struct iphdr in dummy skbuff Syzbot reports a KMSAN uninit-value originating from nsimdevtrapskbbuild, with the allocation also being performed in the same function. Fix this by calling skbputzero inste...