CVE-2016-4470: linux linux_kernel
Vulnerability summary
CVE-2016-4470 is a medium (CVSS 5.5) vulnerability in linux linux_kernel. EPSS estimates a 0.58% chance of exploitation in the next 30 days, higher than 47.8% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 40 · Related 28Timeline
- 27-06-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
The key_reject_and_link function in security/keys/key.c in the Linux kernel through 4.6.3 does not ensure that a certain data structure is initialized, which allows local users to cause a denial of service (system crash) via vectors involving a crafted keyctl request2 command.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · Red hatEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.58%
Chance of exploitation in the next 30 days
Percentile
48%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.58% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat32 products
- enterprise_linuxEOL6.0
- enterprise_linux_desktop7.0
- enterprise_linux_for_real_time7.0
- enterprise_linux_hpc_node7.0
- enterprise_linux_hpc_node_eus7.0
Ubuntu5 products
- linux< 3.13.0-93.140 | < 4.4.0-34.53
- linux-lts-vivid< 3.19.0-66.74~14.04.1
- linux-lts-xenial< 4.4.0-34.53~14.04.1
- linux-raspi2< 4.4.0-1019.25
- linux-snapdragon< 4.4.0-1022.25
Suse4 products
- kgraft-patch-SLE12_Update_14&distro=SUSE Linux Enterprise Server 12-LTSS< 2-2.2
- kgraft-patch-SLE12_Update_14&distro=SUSE Linux Enterprise Server for SAP Applications 12< 2-2.2
- kgraft-patch-SLE12_Update_15&distro=SUSE Linux Enterprise Server 12-LTSS< 2-2.2
- kgraft-patch-SLE12_Update_15&distro=SUSE Linux Enterprise Server for SAP Applications 12< 2-2.2
Debian1 product
- linux< 4.6.2-2
Linux1 product
- linux_kernel≤ 4.6.3
Novell1 product
7 vendors · 46 products
References
72 links- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlX Refsource CONFIRMVendor Advisory
- www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlX Refsource CONFIRMThird Party Advisory
Show all 72 references
- www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.htmlX Refsource CONFIRM
- bugzilla.redhat.com/show_bug.cgi?id=1341716X Refsource CONFIRMIssue TrackingThird Party AdvisoryVDB EntryREPORT
- github.com/torvalds/linux/commit/38327424b40bcebe2de92d07312c89360ac9229aX Refsource CONFIRMVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- bugzilla.suse.com/984764REPORT
