CVE-2017-8086

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-05-02 · updated 2026-06-17
Weakness: CWE-772

Description

Memory leak in the v9fs_list_xattr function in hw/9pfs/9p-xattr.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (memory consumption) via vectors involving the orig_value variable.

Affected products

Debian Linux: 8.0
QEMU: through 2.8.1; 2.9.0-rc0, 2.9.0-rc1, 2.9.0-rc2, 2.9.0-rc3

References

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=4ffcdef4277a91af15a3c09f7d16af072c29f3f2
http://www.openwall.com/lists/oss-security/2017/04/25/5
http://www.securityfocus.com/bid/98012
https://bugzilla.redhat.com/show_bug.cgi?id=1444781
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
https://lists.gnu.org/archive/html/qemu-devel/2017-04/msg01636.html
https://security.gentoo.org/glsa/201706-03
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=4ffcdef4277a91af15a3c09f7d16af072c29f3f2
http://www.openwall.com/lists/oss-security/2017/04/25/5
http://www.securityfocus.com/bid/98012
https://bugzilla.redhat.com/show_bug.cgi?id=1444781
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html

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