01 Record

CVE-2018-12896

An issue was discovered in the Linux kernel through 4.17.3. An Integer Overflow in kernel/time/posix-timers.c in the POSIX timer code is caused by the way the overrun accounting works. Depending on

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

An issue was discovered in the Linux kernel through 4.17.3. An Integer Overflow in kernel/time/posix-timers.c in the POSIX timer code is caused by the way the overrun accounting works. Depending on

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.63% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 50.4% of scored records. A rank, not a probability.
NVD base score: 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2018-07-02 17:00Z8 YR AGO

Last updated

2024-08-05 08:45Z2 YR AGO

Reserved

2018-06-26

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-190Integer Overflow or WraparoundBase

Data version

5.1

Document digest

70c35549abb21457c2adc07b384c3a2b907c3d0370160048de82eb53072159ec

05 Affected products

VendorProductVersionsPlatforms

canonicalubuntu_linuxNot specified—

debiandebian_linuxNot specified—

linuxlinux_kernelNot specified—

redhatenterprise_linuxNot specified—

redhatenterprise_mrgNot specified—

06 References

bugzilla.kernel.orghttps://bugzilla.kernel.org/show_bug.cgi?id=200189x_refsource_MISC
usn.ubuntu.comUSN-3848-2https://usn.ubuntu.com/3848-2/vendor-advisoryx_refsource_UBUNTU
usn.ubuntu.comUSN-3847-1https://usn.ubuntu.com/3847-1/vendor-advisoryx_refsource_UBUNTU
github.comhttps://github.com/torvalds/linux/commit/78c9c4dfbf8c04883941445a195276bb4bb92c76x_refsource_MISC
usn.ubuntu.comUSN-3847-2https://usn.ubuntu.com/3847-2/vendor-advisoryx_refsource_UBUNTU
usn.ubuntu.comUSN-3849-1https://usn.ubuntu.com/3849-1/vendor-advisoryx_refsource_UBUNTU
usn.ubuntu.comUSN-3849-2https://usn.ubuntu.com/3849-2/vendor-advisoryx_refsource_UBUNTU
usn.ubuntu.comUSN-3848-1https://usn.ubuntu.com/3848-1/vendor-advisoryx_refsource_UBUNTU
usn.ubuntu.comUSN-3847-3https://usn.ubuntu.com/3847-3/vendor-advisoryx_refsource_UBUNTU
github.comhttps://github.com/lcytxw/bug_repro/tree/master/bug_200189x_refsource_MISC
lists.debian.org[debian-lts-announce] 20190315 [SECURITY] [DLA 1715-1] linux-4.9 security updatehttps://lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlmailing-listx_refsource_MLIST
lists.debian.org[debian-lts-announce] 20190327 [SECURITY] [DLA 1731-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2019/03/msg00034.htmlmailing-listx_refsource_MLIST
lists.debian.org[debian-lts-announce] 20190401 [SECURITY] [DLA 1731-2] linux regression updatehttps://lists.debian.org/debian-lts-announce/2019/04/msg00004.htmlmailing-listx_refsource_MLIST

07 Fixed in

Debian 12

linux
Fixed in 4.18.20-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 4.18.20-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 4.18.20-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.