Linux Kernel Security Vulnerabilities

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 ibdelsubdeviceandput function not releasing the device’s reference count when an error occurs...

CVE-2026-22994: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix reference count leak in bpfprogtestrunxdp syzbot is reporting unregisternetdevice: waiting for sit0 to become free. Usage count = 2 problem. A debug printk patch found that a refcount is obtained at xdpconvertmdtobuff fr...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-004847)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004847 advisory. In the Linux kernel, the following vulnerability has been resolved: usb: host: ohci-ppc-of: Fix refcount leak bug In ohcihcdppcofprobe, offindcompatiblenode will...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-004922)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004922 advisory. In the Linux kernel, the following vulnerability has been resolved: apparmor: fix reference count leak in aapivotroot The aapivotroot function has a reference counti...

Linux Distros Unpatched Vulnerability : CVE-2026-22994

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: Fix reference count leak in bpfprogtestrunxdp syzbot is reporting unregisternetdevice: waiting for sit0 to become free. Usage count = 2 problem. A debug...

Azure Linux 3.0 Security Update: dhcp (CVE-2022-2928)

The version of dhcp 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-2022-2928 advisory. - In ISC DHCP 4.4.0 - 4.4.3, ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16-P1, when the function optioncodehashlookup is call...

Azure Linux 3.0 Security Update: kernel (CVE-2025-22025)

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-2025-22025 advisory. - In the Linux kernel, the following vulnerability has been resolved: nfsd: put dlstid if fail to queue dlreca...

Azure Linux 3.0 Security Update: kernel (CVE-2024-50012)

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-2024-50012 advisory. - In the Linux kernel, the following vulnerability has been resolved: cpufreq: Avoid a bad reference count on...

ROS-20260121-73-0028

A vulnerability in the nfsd component of the Linux operating system kernel is related to errors in updating the reference count. Exploitation of the vulnerability could allow an attacker to cause a denial of service...

ROS-20260119-7361

A vulnerability in the batman-adv/batvelp.c component of the Linux operating system kernel is related to errors in updating the reference count. Exploitation of the vulnerability could allow an attacker to cause a denial of service...

SUSE CVE-2025-71107

In the Linux kernel, the following vulnerability has been resolved: f2fs: ensure node page reads complete before f2fsputsuper finishes Xfstests generic/335, generic/336 sometimes crash with the following message: F2FS-fs dm-0: detect filesystem reference count leak during umount, type: 9, count: ...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-004798)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004798 advisory. In the Linux kernel, the following vulnerability has been resolved: mfd: arizona: Use pmruntimeresumeandget to prevent refcnt leak In arizonaclk32kenable, we should...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003940)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003940 advisory. An issue was discovered in the Linux kernel before 5.0.6. In rxqueueaddkobject and netdevqueueaddkobject in net/core/net-sysfs.c, a reference count is mishandled, ak...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000773)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000773 advisory. The BPF subsystem in the Linux kernel before 4.5.5 mishandles reference counts, which allows local users to cause a denial of service use-after-free or possibly have...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001188)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001188 advisory. The omninetopen function in drivers/usb/serial/omninet.c in the Linux kernel before 4.10.4 allows local users to cause a denial of service tty exhaustion by leveragi...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003603)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003603 advisory. The Linux kernel before 5.1-rc5 allows page-refcount reference count overflow, with resultant use-after- free issues, if about 140 GiB of RAM exists. This is related...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-003632)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003632 advisory. The Linux kernel before 5.1-rc5 allows page-refcount reference count overflow, with resultant use-after- free issues, if about 140 GiB of RAM exists. This is related...

ipv4: Fix reference count leak when using error routes with nexthop objects

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CVE-2025-68791

A reference count leak flaw was found in the Linux kernel's FUSE filesystem when using iouring for argument copies. The copyfinish function is not called in error paths, causing page reference counts to leak. This can lead to memory being pinned indefinitely and potential resource exhaustion...

SUSE CVE-2025-68791

In the Linux kernel, the following vulnerability has been resolved: fuse: missing copyfinish in fuse-over-io-uring argument copies Fix a possible reference count leak of payload pages during fuse argument copies. Joanne: simplified error cleanup...