CVE-2015-8785

The fuse_fill_write_pages function in fs/fuse/file.c in the Linux kernel before 4.4 allows local users to cause a denial of service (infinite loop) via a writev system call that triggers a zero length for the first segment of an iov.

Published: 2016-02-08 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-8785 is rated Moderate Risk (40.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.57%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-8785

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.09% 0.57% +0.48%
2 2025-04-21 0.04% 0.09% +0.05%
3 2025-03-30 — 0.04% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-8785

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.2 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.5 3.6 [email protected]
4.9 2.0 MEDIUM
AV:L/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.9 6.9 [email protected]

Weakness enumeration for CVE-2015-8785

OS Trackers for CVE-2015-8785

vendor priority summary link
debian not yet assigned CVE-2015-8785 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2015-8785
redhat low — https://access.redhat.com/security/cve/CVE-2015-8785
suse low CVE-2015-8785 severity low: SUSE including 160 source package names (kernel-bigsmp-3.0.101-0.47.79.1, kernel-bigsmp-base-3.0.101-0.47.79.1, …), 537 product×package rows across 79 product lines (HPE Helion OpenStack 8, SUSE CaaS Platform 4.0, … (79 product lines)): Fixed 272, Known Not Affected 265. https://www.suse.com/security/cve/CVE-2015-8785/
ubuntu medium CVE-2015-8785 medium priority: Ubuntu including 29 source packages (linux, linux-2.6, …), 223 status rows across 8 suites (precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): DNE 149, released 40, ignored 19, not-affected 15. https://ubuntu.com/security/CVE-2015-8785

Affected software / configurations for CVE-2015-8785

Vendor Product Version Raw CPE
linux linux_kernel < 4.4 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel 4.4 cpe:2.3:o:linux:linux_kernel:4.4:rc1:*:*:*:*:*:*
linux linux_kernel 4.4 cpe:2.3:o:linux:linux_kernel:4.4:rc2:*:*:*:*:*:*
linux linux_kernel 4.4 cpe:2.3:o:linux:linux_kernel:4.4:rc3:*:*:*:*:*:*
linux linux_kernel 4.4 cpe:2.3:o:linux:linux_kernel:4.4:rc4:*:*:*:*:*:*
suse linux_enterprise_real_time_extension 12 cpe:2.3:o:suse:linux_enterprise_real_time_extension:12:sp1:*:*:*:*:*:*

References for CVE-2015-8785

URL Tags
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3ca8138f014a913f98e6ef40e939868e1e9ea876 Issue Tracking Patch Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html Third Party Advisory
http://www.debian.org/security/2016/dsa-3503 Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/01/24/1 Mailing List Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html Third Party Advisory
http://www.securityfocus.com/bid/81688 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-2886-1 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1290642 Issue Tracking
https://github.com/torvalds/linux/commit/3ca8138f014a913f98e6ef40e939868e1e9ea876 Issue Tracking Patch Vendor Advisory
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