USN-7907-5: Linux kernel kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Cryptographic API; - ACPI drivers; - Hardware monitoring drivers; - InfiniBand drivers; - Mailbox framework; -...

OESA-2025-2804 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix slab-use-after-free on hdcpwork Why A slab-use-after-free is reported when HDCP is destroyed but the propertyvalidatedwork queue is still...

kernel: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm()

A vulnerability has been identified in the Linux kernel's Network File System NFS daemon that could allow for a Denial of Service and in worst case scenario Arbitrary Code Execution. This Use-After-Free flaw arises from a race condition when the kernel handles the confirmation of an NFS client...

CVE-2022-50666

In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix QP destroy to wait for all references dropped. Delay QP destroy completion until all siw references to QP are dropped. The calling RDMA core will free QP structure after successful return from siwqpdestroy call, so...

UBUNTU-CVE-2022-50666

In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix QP destroy to wait for all references dropped. Delay QP destroy completion until all siw references to QP are dropped. The calling RDMA core will free QP structure after successful return from siwqpdestroy call, so...

NFSD: Fix crash in nfsd4_read_release()

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kernel: cifs: Fix oops due to uninitialised variable

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix oops due to uninitialised variable Fix smb3inittransformrq to initialise buffer to NULL before calling netfsallocfolioqbuffer as netfs assumes it can append to the buffer it is given. Setting it to NULL means it should...

CVE-2022-50643

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix xid leak in cifscopyfilerange If the file is used by swap, before return -EOPNOTSUPP, should free the xid, otherwise, the xid will be leaked...

NFSD: free copynotify stateid in nfs4_free_ol_stateid()

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EUVD-2025-201621

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix crash in nfsd4readrelease When tracing is enabled, the tracenfsdreaddone trace point crashes during the pynfs read.testNoFh test...

CVE-2025-40324 NFSD: Fix crash in nfsd4_read_release()

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix crash in nfsd4readrelease When tracing is enabled, the tracenfsdreaddone trace point crashes during the pynfs read.testNoFh test...

CVE-2025-40324 NFSD: Fix crash in nfsd4_read_release()

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix crash in nfsd4readrelease When tracing is enabled, the tracenfsdreaddone trace point crashes during the pynfs read.testNoFh test...

PT-2025-49452

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Network File System Daemon NFSD component of the Linux kernel. Specifically, a crash can occur within the nfsd4 read release function when tracing is enabled,...

PT-2025-49453

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel’s Network File System Daemon NFSD does not properly handle requests for new time deleg FATTR4 attributes introduced in newer NFS specifications. Specifically, NFSv4...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: crypto: essiv - Check ssize for decryption and in-place encryption CVE-2025-40019 In the Linux kernel, the following vulnerability has been resolved: mm/ksm: fix flag-dropping behavior in ksmmadvise CVE-2025-40040...

CVE-2025-40273

In the Linux kernel, the following vulnerability has been resolved: NFSD: free copynotify stateid in nfs4freeolstateid Typically copynotify stateid is freed either when parent's stateid is being close/freed or in nfsd4laundromat if the stateid hasn't been used in a lease period. However, in case...

CVE-2025-40273

The CVE-2025-40273 issue is in the Linux kernel NFSD state handling: when an OPEN creates a parent stateid, followed by COPY_NOTIFY and a client reboot, previous state expiry could leave a copynotify stateid attached to a freed parent. The patch fixes this by freeing the associated copynotify sta...

PT-2025-49374

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw within the NFS daemon NFSD related to the handling of copynotify stateids. Specifically, the issue arises when a client reboots after establishing an OPE...

AlmaLinux 8 : kernel-rt (ALSA-2025:22387)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:22387 advisory. kernel: nfsd: handle getclientlocked failure in nfsd4setclientidconfirm CVE-2025-38724 kernel: smb: client: fix race with concurrent opens in rename2...

USN-7874-3: Linux kernel (IoT) vulnerabilities

Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this t...