The vulnerability of the SMB2_negotiate() function in the Linux operating system allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the SMB2negotiate function in the Linux operating system is related to the copying of buffers without checking the size of the input data a classic buffer overflow attack. Exploiting this vulnerability allows a remote attacker to compromise the confidentiality, integrity, and...

PT-2026-43839

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A Use-After-Free UAF and double free issue exists in the SMB client. The problem occurs within the smb2 open file function when retrying SMB2 open. If the data variable is not null, a UA...

Azure Linux 3.0 Security Update: kernel (CVE-2025-21945)

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-2025-21945 advisory. - In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2lock If...

MiracleLinux 9 : kernel-5.14.0-362.24.1.el9_3 (AXSA:2024-7637:09)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2024-7637:09 advisory. kernel: inactive elements in nftpipapowalk CVE-2023-6817 kernel: netfilter: use-after-free in nfttransgccatchallsync leads to privilege escalation...

MiracleLinux 9 : kernel-5.14.0-162.6.1.el9_1 (AXSA:2023-4648:01)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2023-4648:01 advisory. off-path attacker may inject data or terminate victim's TCP session CVE-2020-36516 use-after-free vulnerability in function scosocksendmsg...

UBUNTU-CVE-2025-68806

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix buffer validation by including null terminator size in EA length The smb2setea function, which handles Extended Attributes EA, was performing buffer validation checks that incorrectly omitted the size of the null...

CVE-2025-68806 ksmbd: fix buffer validation by including null terminator size in EA length

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix buffer validation by including null terminator size in EA length The smb2setea function, which handles Extended Attributes EA, was performing buffer validation checks that incorrectly omitted the size of the null...

ROS-20260113-7373

A vulnerability in the smb2read function in the fs/smb/server/smb2pdu.c module of the Linux kernel is related to reading beyond buffer boundaries. Exploitation of the vulnerability may allow a remote intruder to affect confidentiality, integrity and availability of protected information...

Linux Distros Unpatched Vulnerability : CVE-2023-54203

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: fix slab-out-of-bounds in initsmb2rsphdr When smb1 mount fails, KASAN detect slab-out-of-bounds in initsmb2rsphdr like the following one. For smb1...

Linux Distros Unpatched Vulnerability : CVE-2023-54162

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: fix possible memory leak in smb2lock argv needs to be free when setupasyncwork fails or when the current process is woken up. CVE-2023-54162 Note that...

PT-2026-20446

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Linux kernel’s ksmbd module where an infinite loop can occur due to an incorrect reset of the next smb2 rcv hdr off pointer in error paths during SMB2 signature...

SUSE CVE-2023-54162

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix possible memory leak in smb2lock argv needs to be free when setupasyncwork fails or when the current process is woken up...

SUSE CVE-2023-54203

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab-out-of-bounds in initsmb2rsphdr When smb1 mount fails, KASAN detect slab-out-of-bounds in initsmb2rsphdr like the following one. For smb1 negotiate56bytes , initsmb2rsphdr for smb2 is called. The issue occurs whil...

EUVD-2023-60438

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab-out-of-bounds in initsmb2rsphdr When smb1 mount fails, KASAN detect slab-out-of-bounds in initsmb2rsphdr like the following one. For smb1 negotiate56bytes , initsmb2rsphdr for smb2 is called. The issue occurs whil...

CVE-2023-54203

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab-out-of-bounds in initsmb2rsphdr When smb1 mount fails, KASAN detect slab-out-of-bounds in initsmb2rsphdr like the following one. For smb1 negotiate56bytes , initsmb2rsphdr for smb2 is called. The issue occurs whil...

CVE-2023-54162

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix possible memory leak in smb2lock argv needs to be free when setupasyncwork fails or when the current process is woken up...

CVE-2023-54203 ksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab-out-of-bounds in initsmb2rsphdr When smb1 mount fails, KASAN detect slab-out-of-bounds in initsmb2rsphdr like the following one. For smb1 negotiate56bytes , initsmb2rsphdr for smb2 is called. The issue occurs whil...

CVE-2023-54203

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab-out-of-bounds in initsmb2rsphdr When smb1 mount fails, KASAN detect slab-out-of-bounds in initsmb2rsphdr like the following one. For smb1 negotiate56bytes , initsmb2rsphdr for smb2 is called. The issue occurs whil...

CVE-2023-54203 ksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab-out-of-bounds in initsmb2rsphdr When smb1 mount fails, KASAN detect slab-out-of-bounds in initsmb2rsphdr like the following one. For smb1 negotiate56bytes , initsmb2rsphdr for smb2 is called. The issue occurs whil...

CVE-2023-54203

Summary: CVE-2023-54203 affects the Linux kernel ksmbd path in SMB2/SMB1 negotiation handling. When an SMB1 mount negotiation is processed as SMB2, KASAN detects a slab-out-of-bounds in init_smb2_rsp_hdr, leading to a potential crash or memory access issue. The fix adds explicit SMB1 server opera...