Gentoo Linux Security Advisory GLSA 200512-05 – iDEFENSE reported that the AddressFromAtPtr function in the sendmail program fails to check bounds on arguments passed from other functions, and as a result an exploitable stack overflow condition occurs when specifying the -t command line option. Versions less than 1.22 are affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/42304/glsa-200512-05.txt
Source: https://packetstormsecurity.com/files/42304/Gentoo-Linux-Security-Advisory-200512-5.html