CVE-2026-84267

CVE-2026-84267 is an uninitialized heap memory disclosure in the SFTP backend of gvfs (GNOME Virtual File System). The root cause is in the read_string() function, which allocates a buffer without verifying it is fully populated. A malicious SFTP server can send a short FXP_HANDLE reply, causing ...

CVE-2026-84267 Gvfs: sftp: uninitialized heap disclosure in read_string()

A flaw was found in the SFTP backend in gvfs. When mounting a share, a malicious SFTP server can cause readstring to allocate a buffer with a certain length but the function does not verify that the buffer is completely filled, leaving the remainder of the buffer containing uninitialized heap...

CVE-2026-84267 Gvfs: sftp: uninitialized heap disclosure in read_string()

A flaw was found in the SFTP backend in gvfs. When mounting a share, a malicious SFTP server can cause readstring to allocate a buffer with a certain length but the function does not verify that the buffer is completely filled, leaving the remainder of the buffer containing uninitialized heap...

CVE-2026-84268 Gvfs: sftp: heap-based buffer overflow in read_reply()

A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause readreply to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causing...

CVE-2026-84268 Gvfs: sftp: heap-based buffer overflow in read_reply()

A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause readreply to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causing...

CVE-2026-84268

A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause readreply to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causing...

CVE-2026-84268 Gvfs: sftp: heap-based buffer overflow in read_reply()

A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause readreply to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causing...

CVE-2026-84268

CVE-2026-84268 is a heap-based buffer overflow in the gvfs SFTP backend (gvfsd-sftp process). When mounting a share and reading a file, the read_reply() function fails to validate the server-provided length against the allocated buffer size, allowing a malicious SFTP server to write past intended...

EUVD-2026-69287

A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause readreply to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causing...

CVE-2026-84268

A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause readreply to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causing...

CVE-2026-84267

A flaw was found in the SFTP backend in gvfs. When mounting a share, a malicious SFTP server can cause readstring to allocate a buffer with a certain length but the function does not verify that the buffer is completely filled, leaving the remainder of the buffer containing uninitialized heap...

K000163156: Multiple libssh vulnerabilties

Security Advisory Description CVE-2026-15370 A flaw was found in libssh. During SFTP server directory listing, the longname field is constructed with unsafe concatenation into a fixed-size stack buffer. When a client causes the server to list attacker-controlled filenames, sufficiently long names...

PT-2026-84308

A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause read reply to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causin...

Linux Distros Unpatched Vulnerability : CVE-2026-84267

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in the SFTP backend in gvfs. When mounting a share, a malicious SFTP server can cause readstring to allocate a buffer with a certain length but...

Linux Distros Unpatched Vulnerability : CVE-2026-84268

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause readreply to process a length that...

Important: Red Hat Security Advisory: libssh2 security update

An update for libssh2 is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available fo...

libssh2: libssh2: Arbitrary code execution via double-free in SFTP session

A flaw was found in libssh2. A malicious SSH Secure Shell server can exploit a double-free vulnerability in the sftpopen function. This flaw allows the server to corrupt the heap memory of an authenticated client when it opens an SFTP SSH File Transfer Protocol session. This heap corruption can...

USN-8699-1: libssh vulnerabilities

It was discovered that libssh had a stack buffer overflow in its SFTP server when constructing directory listing entries for long filenames. An attacker could possibly use this issue to cause libssh to crash or execute arbitrary code. This issue only affected Ubuntu 26.04 LTS. CVE-2026-15370 It w...

USN-8699-1 libssh vulnerabilities

It was discovered that libssh had a stack buffer overflow in its SFTP server when constructing directory listing entries for long filenames. An attacker could possibly use this issue to cause libssh to crash or execute arbitrary code. This issue only affected Ubuntu 26.04 LTS. CVE-2026-15370 It w...

RHEL 7 : libssh2 (RHSA-2026:61752)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:61752 advisory. The libssh2 packages provide a library that implements the SSH2 protocol. Security Fixes: libssh2: integer overflow via large username or...