PT-2026-39023

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.10 Description A flaw exists in the SMB client where the SMB2 write function places the write payload in iov1..n as part of rq iov. Because smb3 init transform rq pointer-shares rq iov, the crypt message functi...

The vulnerability of SMB2 protocol discoverer, the Wireshark network traffic analyzer, allows a hacker to cause a service failure.

The vulnerability of SMB2 protocol analyzer in Wireshark is related to improper management of sequential memory allocation. Exploiting this vulnerability can allow attackers to cause service failures...

CVE-2026-43239

A flaw was found in the Linux kernel's Server Message Block SMB client. A race condition exists where multiple operations attempting to update network interfaces could execute simultaneously. This concurrency issue could lead to an inconsistent state within the SMB client, potentially causing...

EUVD-2026-27800

In the Linux kernel, the following vulnerability has been resolved: smb: client: prevent races in -queryinterfaces It was possible for two query interface works to be concurrently trying to update the interfaces. Prevent this by checking and updating ifacelastupdate under ifacelock...

CVE-2026-43239

In the Linux kernel, the following vulnerability has been resolved: smb: client: prevent races in -queryinterfaces It was possible for two query interface works to be concurrently trying to update the interfaces. Prevent this by checking and updating ifacelastupdate under ifacelock...

CVE-2026-43112

In the Linux kernel, the following vulnerability has been resolved: fs/smb/client: fix out-of-bounds read in cifssanitizeprepath When cifssanitizeprepath is called with an empty string or a string containing only delimiters e.g., "/", the current logic attempts to check cursor2 - 1 before cursor2...

CVE-2026-43112

In the Linux kernel, the following vulnerability has been resolved: fs/smb/client: fix out-of-bounds read in cifssanitizeprepath When cifssanitizeprepath is called with an empty string or a string containing only delimiters e.g., "/", the current logic attempts to check cursor2 - 1 before cursor2...

CVE-2026-43112 fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath

In the Linux kernel, the following vulnerability has been resolved: fs/smb/client: fix out-of-bounds read in cifssanitizeprepath When cifssanitizeprepath is called with an empty string or a string containing only delimiters e.g., "/", the current logic attempts to check cursor2 - 1 before cursor2...

PT-2026-37579

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the SMB client within the query interfaces function. This occurs when two query interface operations concurrently attempt to update the interfaces. The issue i...

Linux Distros Unpatched Vulnerability : CVE-2026-31710

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: smb: client: fix dir separator in SMB1 UNIX mounts When calling cifsmountgettcon with SMB1...

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : curl vulnerabilities (USN-8227-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8227-1 advisory. It was discovered that curl incorrectly reused non-TLS connections when TLS was required in some STARTTLS configurations....

JLSEC-2026-439 When doing a second SMB request to the same host again, curl would wrongly use a data pointer...

When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory...

JLSEC-2026-401

A use after free vulnerability exists in curl 7.87.0. Curl can be asked to tunnel virtually all protocols it supports through an HTTP proxy. HTTP proxies can and often do deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocat...

CVE-2026-6867

A flaw was found in Wireshark. A remote attacker could exploit a vulnerability in the SMB2 protocol dissector by sending a specially crafted packet. This could lead to a crash of the Wireshark application, resulting in a denial of service DoS for the user. Mitigation To mitigate this issue, users...

CVE-2026-5407

A flaw was found in Wireshark, a network protocol analyzer. An attacker could exploit this vulnerability by providing a specially crafted network capture file containing malicious SMB2 protocol data. This could trigger an infinite loop in Wireshark's SMB2 analysis component, leading to a denial o...

smb: client: fix OOB read in smb2_ioctl_query_info QUERY_INFO path

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curl: libcurl: Wrong file transfer due to incorrect SMB connection reuse

A flaw was found in libcurl. Due to a logical error in the connection reuse mechanism for SMB Server Message Block transfers, libcurl might reuse an existing SMB connection with a different share than intended. This vulnerability, categorized as CWE-488 Exposure of Data Element to Wrong Session,...

CVE-2026-31712

A flaw was found in the ksmbd component of the Linux kernel. An authenticated Server Message Block SMB client with permissions to set an Access Control List ACL on a file can craft a malicious Discretionary Access Control List DACL. This crafted DACL, containing an undersized Access Control Entry...

CVE-2026-31710

A flaw was found in the Linux kernel's Server Message Block SMB client. When mounting SMB1 UNIX shares, the system may incorrectly handle directory separators. This issue arises because flags related to POSIX Access Control Lists ACLs and paths are not properly updated, leading to the use of an...

CVE-2026-31708

A flaw was found in the Linux kernel's Server Message Block SMB client. A malicious server can exploit an out-of-bounds read vulnerability by manipulating the OutputBufferLength during a QUERYINFO operation. This can lead to the exposure of sensitive kernel memory to userspace, resulting in...