ksmbd: fix FSCTL permission bypass by adding a permission check for FSCTL_SET_SPARSE

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EulerOS 2.0 SP15 : kernel (EulerOS-SA-2026-2444)

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : crypto: algifaead - Revert to operating out-of-placeCVE-2026-31431 bpf: Fix undefined behavior in interpreter sdiv/smod for INTMINCVE-2026-31525...

The vulnerability of the `ksmbd_session_lookup_all()` function in the `fs/smb/server/mgmt/user_session.c` module allows a hacker to cause a service failure within the SMB kernel of the Linux operating system.

The vulnerability of the ksmbdsessionlookupall function in the fs/smb/server/mgmt/usersession.c module of the SMB server kernel in Linux operating systems is related to errors during link counters updates. Exploiting this vulnerability could allow an attacker to cause a service failure...

SUSE SLES15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2026:2658-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2658-1 advisory. The SUSE Linux Enterprise 15 SP5 kernel was updated to fix various security issues The following security issues were fixed: -...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP5 kernel was updated to fix various security issues The following security issues were fixed: CVE-2025-10263: arm64: errata: Mitigate TLBI errata on various Arm CPUs bsc1266290. CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished delayed work...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP4 kernel was updated to fix various security issues The following security issues were fixed: CVE-2025-10263: arm64: errata: Mitigate TLBI errata on various Arm CPUs bsc1266290. CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished delayed work...

SUSE-SU-2026:2638-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP4 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2025-10263: arm64: errata: Mitigate TLBI errata on various Arm CPUs bsc1266290. - CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished delayed work...

SUSE CVE-2026-52967

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix possible infinite loop and oob read in symlinkdata On 32-bit architectures, the infinite loop is as follows: len = p-ErrorDataLength == 0xfffffff8 u8 next = p-ErrorContextData + len next == p On 32-bit...

SUSE CVE-2026-53198

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of a deferred filelock on double SMB2CANCEL A deferred byte-range lock an SMB2LOCK that blocks registers an async work on conn-asyncrequests via setupasyncwork, with cancelfn = smb2removeblockedlock and...

SUSE CVE-2026-53271

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix NULL-deref of opinfo-conn in oplock/lease break notifiers smb2oplockbreaknoti and smb2leasebreaknoti read opinfo-conn into a local with neither READONCE nor a NULL check. Both run from oplockbreak after opinfogetlist h...

CVE-2026-52967

A flaw was found in the Linux kernel's Server Message Block SMB client. This vulnerability, located in the symlinkdata function, could allow a malicious SMB server to trigger an infinite loop, leading to a Denial of Service DoS condition. Additionally, an out-of-bounds read could occur, potential...

SMB to Meterpreter Upgrade via PsExec

Upgrades an authenticated SMB session to a Meterpreter session using PsExec techniques. This module uploads a service-wrapped executable payload to the ADMIN$ share via the existing authenticated SMB connection, then creates and starts a Windows service that executes the payload. This mirrors the...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP4 RT kernel was updated to fix various security issues The following security issues were fixed: CVE-2025-10263: arm64: errata: Mitigate TLBI errata on various Arm CPUs bsc1266290. CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished delayed work...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP5 RT kernel was updated to fix various security issues The following security issues were fixed: CVE-2025-10263: arm64: errata: Mitigate TLBI errata on various Arm CPUs bsc1266290. CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished delayed work...

SUSE-SU-2026:2630-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP5 RT kernel was updated to fix various security issues The following security issues were fixed: - CVE-2025-10263: arm64: errata: Mitigate TLBI errata on various Arm CPUs bsc1266290. - CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished delayed wo...

CVE-2026-53271

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix NULL-deref of opinfo-conn in oplock/lease break notifiers smb2oplockbreaknoti and smb2leasebreaknoti read opinfo-conn into a local with neither READONCE nor a NULL check. Both run from oplockbreak after opinfogetlist h...

CVE-2026-53198

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of a deferred filelock on double SMB2CANCEL A deferred byte-range lock an SMB2LOCK that blocks registers an async work on conn-asyncrequests via setupasyncwork, with cancelfn = smb2removeblockedlock and...

CVE-2026-52967

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix possible infinite loop and oob read in symlinkdata On 32-bit architectures, the infinite loop is as follows: len = p-ErrorDataLength == 0xfffffff8 u8 next = p-ErrorContextData + len next == p On 32-bit...

CVE-2026-52967

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix possible infinite loop and oob read in symlinkdata On 32-bit architectures, the infinite loop is as follows: len = p-ErrorDataLength == 0xfffffff8 u8 next = p-ErrorContextData + len next == p On 32-bit...

CVE-2026-53046

The CVE-2026-53046 entry concerns the ksmbd component of the Linux kernel. The vulnerability arises in ksmbd_crypt_message(), which sets a NULL completion callback on AEAD requests and does not properly handle -EINPROGRESS from async hardware crypto engines such as the Qualcomm Crypto Engine (QCE...