CVE-2018-12896

Source
https://nvd.nist.gov/vuln/detail/CVE-2018-12896
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-12896.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2018-12896
Related
Published
2018-07-02T17:29:00Z
Modified
2024-09-18T01:00:20Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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 interval and expiry time values, the overrun can be larger than INTMAX, but the accounting is int based. This basically makes the accounting values, which are visible to user space via timergetoverrun(2) and siginfo::sioverrun, random. For example, a local user can cause a denial of service (signed integer overflow) via crafted mmap, futex, timercreate, and timer_settime system calls.

References

Affected packages

Debian:11 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.18.20-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.18.20-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.18.20-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}