Date: Wed, 17 Oct 2018 12:59:01 +0530 (IST) From: P J P <ppandit@...hat.com> To: oss security list <oss-security@...ts.openwall.com> cc: Arash TC <tohidi.arash@...il.com> Subject: CVE-2018-18438 Qemu: Integer overflow in ccid_card_vscard_read() allows memory corruption Hello, An integer overflow issue was found in the CCID Passthru card device emulation, while reading card data in ccid_card_vscard_read() function. The ccid_card_vscard_read() function accepts a signed integer 'size' argument, which is subsequently used as unsigned size_t value in memcpy(), copying large amounts of memory. A user inside guest could use this flaw to crash the Qemu process resulting in DoS. Upstream patch: --------------- -> https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg02396.html -> https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg02402.html This issue was reported by Arash Tohidi. CVE requested via -> https://cveform.mitre.org/ Thank you. -- Prasad J Pandit / Red Hat Product Security Team 47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F
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