CVE-2026-83742 wstrncat() unsigned integer underflow leads to an off-by-one null write in wolfSSH on non-Windows platforms

Unsigned integer underflow in wstrncat in src/port.c in wolfSSL wolfSSH from v1.4.11 through v1.5.0 on non-Windows platforms allows an authenticated remote attacker to write one out-of-bounds null byte past the end of a stack buffer by sending a crafted SFTP path. wolfSSHRealPath in src/ssh.c...

CVE-2026-83742

The wolfSSL wolfSSH library (versions 1.4.11 through 1.5.0 ) is vulnerable to an unsigned integer underflow in the wstrncat() function located in src/port.c on non-Windows platforms. This flaw occurs because wolfSSH_RealPath() in src/ssh.c incorrectly uses a remaining-size bound (outSz - curSz) i...

CVE-2026-83742 wstrncat() unsigned integer underflow leads to an off-by-one null write in wolfSSH on non-Windows platforms

Unsigned integer underflow in wstrncat in src/port.c in wolfSSL wolfSSH from v1.4.11 through v1.5.0 on non-Windows platforms allows an authenticated remote attacker to write one out-of-bounds null byte past the end of a stack buffer by sending a crafted SFTP path. wolfSSHRealPath in src/ssh.c...

MGASA-2026-0382 Updated tor packages fix security vulnerabilities

An out-of-bounds write when parsing a consensus or detached signature with unexpected signature digest type CVE-2026-77642. A NULL write after free when sending a CONFLUXSWITCH cell fails, resulting in a crash CVE-2026-77641. An infinite loop when decompressing a truncated zlib/gzip stream with...

DEBIAN-CVE-2026-77641

tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUXSWITCH cell fails. The return value of relaysendcommandfromedge was ignored, so a send failure which calls circuitmarkforclose and removes the leg via cfxdelleg would go undetected, causing the caller to write to the...

CVE-2026-77641

tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUXSWITCH cell fails. The return value of relaysendcommandfromedge was ignored, so a send failure which calls circuitmarkforclose and removes the leg via cfxdelleg would go undetected, causing the caller to write to the...

EUVD-2026-63658

tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUXSWITCH cell fails. The return value of relaysendcommandfromedge was ignored, so a send failure which calls circuitmarkforclose and removes the leg via cfxdelleg would go undetected, causing the caller to write to the...

CVE-2026-77641

tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUXSWITCH cell fails. The return value of relaysendcommandfromedge was ignored, so a send failure which calls circuitmarkforclose and removes the leg via cfxdelleg would go undetected, causing the caller to write to the...

CVE-2026-77641

tor versions before 0.4.9.9 are affected by a NULL write after free in the CONFLUX protocol handling. When sending a CONFLUX_SWITCH cell fails, the return value of relay_send_command_from_edge() is ignored. The failed send triggers circuit_mark_for_close() and removes the circuit leg via cfx_del_...

CVE-2026-77641: Unchecked Return Value

tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUXSWITCH cell fails. The return value of relaysendcommandfromedge was ignored, so a send failure which calls circuitmarkforclose and removes the leg via cfxdelleg would go undetected, causing the caller to write to the...

EUVD-2026-29793

NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a one-byte heap out-of-bounds null write exists in the UFS/UFS2 filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted UFS filesystem image. The attacker controls the byte offset of th...

CVE-2026-44215: Out-of-bounds Write

NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a one-byte heap out-of-bounds null write exists in the UFS/UFS2 filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted UFS filesystem image. The attacker controls the byte offset of th...

SUSE CVE-2026-43058

In the Linux kernel, the following vulnerability has been resolved: media: vidtv: fix pass-by-value structs causing MSAN warnings vidtvtsnullwriteinto and vidtvtspcrwriteinto take their argument structs by value, causing MSAN to report uninit-value warnings. While only vidtvtsnullwriteinto has...

CVE-2026-41499 Wazuh: Multiple Heap-based NULL WRITE Buffer Underflows in parse_uname_string()

Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 4.0.0 to before version 4.14.4, multiple heap-based out-of-bounds WRITE vulnerabilities exist in parseunamestring remotedop.c. This function processes OS identification data from agents and...

CVE-2026-26204 Wazuh: Heap-based NULL WRITE Buffer Underflow in GetAlertData

Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 1.0.0 to before version 4.14.4, a heap-based out-of-bounds WRITE occurs in GetAlertData, resulting in writing a NULL byte exactly 1 byte before the start of the buffer allocated by strdup. D...

CVE-2026-26204 Wazuh: Heap-based NULL WRITE Buffer Underflow in GetAlertData

Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 1.0.0 to before version 4.14.4, a heap-based out-of-bounds WRITE occurs in GetAlertData, resulting in writing a NULL byte exactly 1 byte before the start of the buffer allocated by strdup. D...

CVE-2026-26204

Wazuh versions 1.0.0–4.14.3 are affected by a heap-based out-of-bounds write in GetAlertData that writes a NULL byte 1 byte before the start of the buffer allocated by strdup, due to an unsigned underflow. This corrupts heap metadata and can allow a compromised agent to cause denial of service or...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001229)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001229 advisory. A flaw was found in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files before 4.9.10. An empty null write to this file can crash the...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002987)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002987 advisory. A flaw was found in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files before 4.9.10. An empty null write to this file can crash the...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002701)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002701 advisory. A flaw was found in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files before 4.9.10. An empty null write to this file can crash the...