CVE-2018-12896 (GCVE-0-2018-12896)
Vulnerability from cvelistv5
Published
2018-07-02 17:00
Modified
2024-08-05 08:45
Severity ?
CWE
  • n/a
Summary
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 INT_MAX, but the accounting is int based. This basically makes the accounting values, which are visible to user space via timer_getoverrun(2) and siginfo::si_overrun, random. For example, a local user can cause a denial of service (signed integer overflow) via crafted mmap, futex, timer_create, and timer_settime system calls.
References
cve@mitre.org https://bugzilla.kernel.org/show_bug.cgi?id=200189 Issue Tracking, Vendor Advisory
cve@mitre.org https://github.com/lcytxw/bug_repro/tree/master/bug_200189 Exploit, Third Party Advisory
cve@mitre.org https://github.com/torvalds/linux/commit/78c9c4dfbf8c04883941445a195276bb4bb92c76 Patch, Third Party Advisory
cve@mitre.org https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html Mailing List, Third Party Advisory
cve@mitre.org https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html Mailing List, Third Party Advisory
cve@mitre.org https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html Mailing List, Third Party Advisory
cve@mitre.org https://usn.ubuntu.com/3847-1/ Third Party Advisory
cve@mitre.org https://usn.ubuntu.com/3847-2/ Third Party Advisory
cve@mitre.org https://usn.ubuntu.com/3847-3/ Third Party Advisory
cve@mitre.org https://usn.ubuntu.com/3848-1/ Third Party Advisory
cve@mitre.org https://usn.ubuntu.com/3848-2/ Third Party Advisory
cve@mitre.org https://usn.ubuntu.com/3849-1/ Third Party Advisory
cve@mitre.org https://usn.ubuntu.com/3849-2/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugzilla.kernel.org/show_bug.cgi?id=200189 Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/lcytxw/bug_repro/tree/master/bug_200189 Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/torvalds/linux/commit/78c9c4dfbf8c04883941445a195276bb4bb92c76 Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3847-1/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3847-2/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3847-3/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3848-1/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3848-2/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3849-1/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://usn.ubuntu.com/3849-2/ Third Party Advisory
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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  }
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.