CVE-2026-48792 pam_usb: pusb_has_virtual_input_device() silently discards EACCES, disabling remote desktop detection under non-root execution

pamusb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.1, src/evdev.c silently ignores EACCES errors when opening /dev/input/event nodes, causing pusbhasvirtualinputdevice to return 0 no virtual devices found even when every open call failed due to...

CVE-2026-48792

pamusb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.1, src/evdev.c silently ignores EACCES errors when opening /dev/input/event nodes, causing pusbhasvirtualinputdevice to return 0 no virtual devices found even when every open call failed due to...

CVE-2026-48792 pam_usb: pusb_has_virtual_input_device() silently discards EACCES, disabling remote desktop detection under non-root execution

pamusb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.1, src/evdev.c silently ignores EACCES errors when opening /dev/input/event nodes, causing pusbhasvirtualinputdevice to return 0 no virtual devices found even when every open call failed due to...

CVE-2026-48792

The connected sources confirm a vulnerability in pam_usb for Linux prior to 0.9.1: evdev.c silently ignores EACCES when opening /dev/input/event* nodes, causing pusb_has_virtual_input_device() to incorrectly report no virtual devices even if opens fail due to insufficient permissions. As a result...

pam_usb security vulnerability

pamusb is a Linux hardware authentication tool developed by McDope’s individual developer, based on USB devices. Versions of pamusb prior to 0.8.7 contain security vulnerabilities. These vulnerabilities stem from the code in src/tmux.c, which reads the user’s $TMUX environment variable and insert...

PAM_USB code issue vulnerabilities

pamusb is a Linux hardware authentication tool developed by McDope’s individual developer, based on USB devices. Versions of pamusb prior to 0.8.7 have code vulnerabilities. This vulnerability stems from the fact that in src/device.c, the return values of udisksdrivegetserial, udisksdrivegetvendo...

PAM_USB code issue vulnerabilities

pamusb is a Linux hardware authentication tool developed by McDope’s individual developer, based on USB devices. Versions of pamusb prior to 0.9.1 contained code vulnerabilities. This vulnerability stemmed from the fact that the src/log.c file contained a process-level static pointer; each PAM ca...

PT-2026-44110

Name of the Vulnerable Software and Affected Versions pam usb versions prior to 0.8.7 Description In src/device.c, the return values of the functions udisks drive get serial, udisks drive get vendor, and udisks drive get model are passed directly to strcmp without NULL checks. According to...

PAM_USB parameter injection vulnerability

pamusb is a Linux hardware authentication tool developed by McDope’s individual developer, based on USB devices. Versions of pamusb prior to 0.8.7 contained a parameter injection vulnerability. This vulnerability stems from the use of specially crafted UUIDs in configurations e.g., $id/tmp/rce,...

PT-2026-44087

pam usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, multiple pam usb helper tools resolved external binaries through the PATH environment variable rather than using absolute paths. An attacker who can influence the process environment during PAM...

PT-2026-44084

pam usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, src/mem.c implemented out-of-memory guards for xmalloc, xrealloc, and xstrdup using assertdata != NULL. The C standard specifies that all assert expressions are compiled out when NDEBUG is defined a...

PAM_USB authorization issue vulnerability

pamusb is a Linux hardware authentication tool developed by McDope’s individual developer, based on USB devices. Versions of pamusb prior to 0.8.7 have a vulnerability related to authorization issues. This vulnerability stems from symbolic link attacks involving the pad directory and pad files,...

pam_usb security vulnerability

pamusb is a Linux hardware authentication tool developed by McDope’s individual developer, based on USB devices. Versions of pamusb prior to 0.9.1 contained security vulnerabilities. These vulnerabilities stemmed from the silent ignoring of EACCES errors in the src/evdev.c file. This could lead t...

PAM_USB input validation error vulnerability

pamusb is a Linux hardware authentication tool developed by McDope’s individual developer, based on USB devices. Versions of pamusb prior to 0.9.1 contained a input validation vulnerability. This vulnerability stems from the lack of an upper limit on the number of ndevices being counted in...

pam_usb Access Control Vulnerability

pamusb is a Linux hardware authentication tool developed by McDope’s individual developer, based on USB devices. Versions of pamusb prior to 0.9.0 contained an access control vulnerability; this vulnerability stemmed from the denyremote function, which only checks the first 32-bit word of utaddrv...

PT-2026-44085

pam usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, the pusb pad compare function in src/pad.c only verified that the user-side pad /.pamusb/device.pad could be read, but did not enforce that the system-side pad the pad file on the USB device was als...

PAM_USB code issue vulnerabilities

pamusb is a Linux hardware authentication tool developed by McDope’s individual developer, based on USB devices. Versions of pamusb prior to 0.9.0 have code vulnerabilities. These vulnerabilities stem from multiple auxiliary tools resolving external binary files through the PATH environment...

PAM_USB code issue vulnerabilities

pamusb is a Linux hardware authentication tool developed by McDope’s individual developer, based on USB devices. Versions of pamusb prior to 0.9.0 have code vulnerabilities. These vulnerabilities arise from assertions being compiled and removed during memory allocation failures, leading to null...

PT-2026-44115

Name of the Vulnerable Software and Affected Versions pam usb versions prior to 0.9.0 Description This issue occurs in the deny remote feature of the PAM module, which is loaded into host processes such as sudo, login, GDM, and GNOME Shell. In multi-threaded environments like GDM, three functions...

PT-2026-44114

Name of the Vulnerable Software and Affected Versions pam usb versions prior to 0.9.0 Description The deny remote feature incorrectly classifies IPv4-mapped IPv6 remote connections as local sessions. This occurs because the system checks the ut addr v6 field of utmpx using a guard if utent-ut add...