Bug 1421995 - (CVE-2017-5987) CVE-2017-5987 Qemu: sd: infinite loop issue in multi block transfers
CVE-2017-5987 Qemu: sd: infinite loop issue in multi block transfers
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20170131,reported=2...
: Security
Depends On: 1422001
Blocks: 1401579
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Reported: 2017-02-14 04:54 EST by Prasad J Pandit
Modified: 2017-02-14 23:43 EST (History)
38 users (show)

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Description Prasad J Pandit 2017-02-14 04:54:18 EST
Quick emulator(Qemu) built with the SDHCI device emulation support is vulnerable
to an infinite loop issue. It could occur while doing a multi block SDMA
transfer via 'sdhci_sdma_transfer_multi_blocks' routine.

A privileged user inside guest could use this flaw to crash the Qemu process
resulting in DoS.

Upstream patch:
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  -> https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg02776.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2017/02/14/8
Comment 1 Prasad J Pandit 2017-02-14 04:54:54 EST
Acknowledgments:

Name: Jiang Xin (Huawei.com Inc.) Wjjzhang (Tencent.com Inc.)
Comment 2 Prasad J Pandit 2017-02-14 04:57:43 EST
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1422001]

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