Adobe has rolled out some security updates that patch holes found in Adobe Acrobat, Flash, and Reader that cause computer crashes. It doesn't detail anything specific about the security issues that were addressed, nor what the patches fix precisely. Still, the updates went out today, so you can update your applications to fix any issues you might be experiencing.
The majority of its emphasis seems to be on Flash, which it highly recommends users update. The security updates were released for the following versions of Flash Player: 11.5.502.135 and earlier (Windows), 11.5.502.136 and earlier (Mac), and 220.127.116.118 (Linux). Likewise, updates were rolled out for the Android Flash Player for Android 4.x, 3.x, and 2.x. Adobe also recommends updating Adobe AIR.
Likewise, Adobe also says that users running Adobe Acrobat and Adobe Reader version 11.0.0 and earlier on both Windows and OS X, as well as Adobe Reader 9.x on Linux need to update with the security patches. This is following the latest release of those two application, which Adobe rolled out back in October 2012.
Says Adobe in the security update summary: "These updates address a vulnerability that could cause a crash and potentially allow an attacker to take control of the affected system ... These updates address a critical vulnerability in the software." The number one priority listed out of the various updates is for the Windows Flash Player version 11.5.502.146, followed by the same version for OS X. The rest of the Flash updates, as well as the AIR updates are level 3 priority. You can get the security patches by updating the applications or downloading the latest version from the Adobe website.