CVE-2026-48983 pam_usb: TOCTOU race condition in pad directory creation allows symlink substitution

pamusb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, a symlink race condition exists in per-device and per-user pad directory creation. pamusb uses a check-then-act pattern: it calls lstat to test for existence and then calls mkdir separate...

EUVD-2026-37936

pamusb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, a symlink race condition exists in per-device and per-user pad directory creation. pamusb uses a check-then-act pattern: it calls lstat to test for existence and then calls mkdir separate...

CVE-2026-48983

pamusb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, a symlink race condition exists in per-device and per-user pad directory creation. pamusb uses a check-then-act pattern: it calls lstat to test for existence and then calls mkdir separate...

CVE-2026-48983 pam_usb: TOCTOU race condition in pad directory creation allows symlink substitution

pamusb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, a symlink race condition exists in per-device and per-user pad directory creation. pamusb uses a check-then-act pattern: it calls lstat to test for existence and then calls mkdir separate...

CVE-2026-48982 pam_usb: Missing O_EXCL on pad temp file creation allows concurrent update race

pamusb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, when updating a one-time pad file, a temporary file is created using open without the OEXCL flag. Without OEXCL, the create operation is not atomic: two concurrent processes racing to...

CVE-2026-48982 pam_usb: Missing O_EXCL on pad temp file creation allows concurrent update race

pamusb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, when updating a one-time pad file, a temporary file is created using open without the OEXCL flag. Without OEXCL, the create operation is not atomic: two concurrent processes racing to...

CVE-2026-48982 pam_usb: Missing O_EXCL on pad temp file creation allows concurrent update race

pamusb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, when updating a one-time pad file, a temporary file is created using open without the OEXCL flag. Without OEXCL, the create operation is not atomic: two concurrent processes racing to...

EUVD-2026-37934

pamusb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, pamusb calls xmlReadFile with flags=0 when loading the configuration file, allowing libxml2 to process external entity references XXE, potentially making outbound network connections or...

CVE-2026-48981 pam_usb: xmlReadFile flags=0 permits XXE network entity fetching in conf.c

pamusb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, pamusb calls xmlReadFile with flags=0 when loading the configuration file, allowing libxml2 to process external entity references XXE, potentially making outbound network connections or...

CVE-2026-48985

pamusb provides hardware authentication for Linux using ordinary removable media. In versions 0.9.1 and below, pusbisloginctllocal can cause a NULL dereference crash when parsing loginctl output. The function calls popen and reads the result; if the Remote field is only a newline, fgets succeeds...

CVE-2026-48985 pam_usb: NULL Dereference Crash in pusb_is_loginctl_local when loginctl Returns Empty Remote Field

pamusb provides hardware authentication for Linux using ordinary removable media. In versions 0.9.1 and below, pusbisloginctllocal can cause a NULL dereference crash when parsing loginctl output. The function calls popen and reads the result; if the Remote field is only a newline, fgets succeeds...

CVE-2026-48986

pamusb provides hardware authentication for Linux using removable media. In pamusb 0.9.1 and earlier, usbgetprocessparentid can cause an infinite loop DoS because it does not initialize ppid on failure. In pusblocallogin, the same variable is reused as input and output in a process-tree while loo...

CVE-2026-48986 pam_usb: Infinite loop DoS in process-tree walk when parent process exits during authentication

pamusb provides hardware authentication for Linux using removable media. In pamusb 0.9.1 and earlier, usbgetprocessparentid can cause an infinite loop DoS because it does not initialize ppid on failure. In pusblocallogin, the same variable is reused as input and output in a process-tree while loo...

CVE-2026-48986

CVE-2026-48986 affects pam_usb (Linux hardware authentication with removable media). In versions up to 0.9.1, the usb_get_process_parent_id() routine can cause an infinite loop DoS because it does not initialize *ppid on failure. In pusb_local_login(), the same variable is reused in a process-tre...

CVE-2026-48984 pam_usb: xfree() does not call explicit_bzero — sensitive cryptographic material may linger in freed heap

pamusb provides hardware authentication for Linux using ordinary removable media. In versions 0.9.1 and below, the xfree memory release helper in calls free without first zeroing the buffer contents, releasing heap-allocated buffers containing sensitive data — including one-time pad bytes read fr...

EUVD-2026-37922

pamusb provides hardware authentication for Linux using ordinary removable media. In versions 0.9.1 and below, the xfree memory release helper in calls free without first zeroing the buffer contents, releasing heap-allocated buffers containing sensitive data — including one-time pad bytes read fr...

CVE-2026-48984 pam_usb: xfree() does not call explicit_bzero — sensitive cryptographic material may linger in freed heap

pamusb provides hardware authentication for Linux using ordinary removable media. In versions 0.9.1 and below, the xfree memory release helper in calls free without first zeroing the buffer contents, releasing heap-allocated buffers containing sensitive data — including one-time pad bytes read fr...

PT-2026-50782

Name of the Vulnerable Software and Affected Versions pam usb versions prior to 0.9.2 Description pam usb provides hardware authentication for Linux using removable media. The software calls the xmlReadFile function with flags=0 when loading the configuration file, which allows libxml2 to process...

Siemens RuggedCom Rox Path Traversal (CVE-2025-6020)

A flaw was found in linux-pam. The module pamnamespace may use access user-controlled paths without proper protection, allowing local users to elevate their privileges to root via multiple symlink attacks and race conditions. This plugin only works with Tenable.ot. Please visit...

PT-2026-50784

Name of the Vulnerable Software and Affected Versions pam usb versions prior to 0.9.2 Description A symlink race condition exists in the creation of per-device and per-user pad directories. The software employs a check-then-act pattern, where it calls lstat to verify existence and subsequently...