PCSC-Lite: Multiple vulnerabilities

PCSC-Lite: Multiple vulnerabilities Multiple vulnerabilities have been found in PCSC-Lite, the worst of which could lead to privilege escalation. PCSC-Lite 2017-02-01 2017-02-01 604574 local 1.8.20 1.8.20

PCSC-Lite is a middleware to access a smart card using the SCard API (PC/SC).

The SCardReleaseContext function normally releases resources associated with the given handle (including “cardsList”) and clients should cease using this handle. However, a malicious client can make the daemon invoke SCardReleaseContext and continue issuing other commands that use “cardsList”, resulting in a use-after-free. When SCardReleaseContext is invoked multiple times it additionally results in a double-free of “cardsList”.

A local attacker could use a malicious client to connect to pcscd’s Unix socket, possibly resulting in a Denial of Service condition or privilege escalation since the daemon is running as root.

There is no known workaround at this time.

All PCSC-Lite users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=sys-apps/pcsc-lite-1.8.20"

CVE-2016-10109 whissi whissi