PT-2014-4346

Multiple integer overflows in the 1 FLASK GETBOOL, 2 FLASK SETBOOL, 3 FLASK USER, and 4 FLASK CONTEXT TO SID suboperations in the flask hypercall in Xen 4.3.x, 4.2.x, 4.1.x, 3.2.x, and earlier, when XSM is enabled, allow local users to cause a denial of service processor fault via unspecified...

PT-2014-4348

Multiple integer overflows in the 1 FLASK GETBOOL and 2 FLASK SETBOOL suboperations in the flask hypercall in Xen 4.1.x, 3.3.x, 3.2.x, and earlier, when XSM is enabled, allow local users to cause a denial of service processor fault via unspecified vectors, a different vulnerability than...

PT-2014-4349

Multiple integer overflows in unspecified suboperations in the flask hypercall in Xen 3.2.x and earlier, when XSM is enabled, allow local users to cause a denial of service processor fault via unspecified vectors, a different vulnerability than CVE-2014-1891, CVE-2014-1892, and CVE-2014-1893...

Fedora 19 : xen-4.2.3-15.fc19 (2014-2188)

three security fixes: integer overflow in several XSM/Flask hypercalls XSA-84 Off-by-one error in FLASKAVCCACHESTAT hypercall XSA-85 libvchan failure handling malicious ring indexes XSA-86 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora...

integer overflow in several XSM/Flask hypercalls

ISSUE DESCRIPTION The FLASKGET,SETBOOL, FLASKUSER and FLASKCONTEXTTOSID suboperations of the flask hypercall are vulnerable to an integer overflow on the input size. The hypercalls attempt to allocate a buffer which is 1 larger than this size and is therefore vulnerable to integer overflow and an...

Off-by-one error in FLASK_AVC_CACHESTAT hypercall

ISSUE DESCRIPTION The FLASKAVCCACHESTAT hypercall, which provides access to per-cpu statistics on the Flask security policy, incorrectly validates the CPU for which statistics are being requested. IMPACT An attacker can cause the hypervisor to read past the end of an array. This may result in...