VDB
CVE-2018-12896
CVE-2018-12896
PUBLISHED
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.
EPSS 0.03% · 10.9th percentile
Risk Scores
EPSS Score
0.03%
10.9th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | 0, 6.11.0-1009.10~24.04.1, 6.11.0-1011.12~24.04.1 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | 6.11.0-1012.12~24.04.1, *, * |
| Ubuntu:14.04:LTS | linux | 3.13.0-128.177, 3.13.0-66.108, 3.13.0-67.110 |
| Ubuntu:16.04:LTS | linux-aws | 4.4.0-1062.71, 4.4.0-1035.44, 4.4.0-1031.40 |
| Ubuntu:22.04:LTS | linux-realtime | 5.15.0-1032.35, 0 |
| Ubuntu:16.04:LTS | linux-kvm | 4.4.0-1031.37, 4.4.0-1015.20, 4.4.0-1026.31 |
| Ubuntu:16.04:LTS | linux | 4.4.0-10.25, 4.4.0-14.30, 4.4.0-22.39 |
| Ubuntu:18.04:LTS | linux-raspi2 | 4.15.0-1026.28, 4.15.0-1010.11, 4.15.0-1011.12 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | 0, 5.15.0-1073.75 |
| Ubuntu:20.04:LTS | linux-raspi2 | 5.3.0-1015.17, 5.3.0-1014.16, 5.3.0-1007.8 |
| Ubuntu:18.04:LTS | linux-gcp | 4.15.0-1010.10, 0, 4.15.0-1001.1 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | 6.11.0-1017.17~24.04.1, 6.11.0-1016.16~24.04.1, 6.11.0-1014.14~24.04.1 |
| Ubuntu:14.04:LTS | linux-lts-xenial | 4.4.0-64.85~14.04.1, 4.4.0-63.84~14.04.2, 4.4.0-59.80~14.04.1 |
| Ubuntu:Pro:20.04:LTS | linux-azure-fde-5.15 | 5.15.0-1086.95~20.04.1.1, *, * |
| Ubuntu:24.04:LTS | linux-raspi-realtime | 6.8.0-2019.20, 0 |
| Ubuntu:20.04:LTS | linux-gke | 5.4.0-1052.55, 5.4.0-1051.54, 5.4.0-1046.48 |
| Ubuntu:16.04:LTS | linux-snapdragon | 4.4.0-1090.95, 4.4.0-1087.92, 4.4.0-1082.87 |
| Ubuntu:20.04:LTS | linux-azure-fde | 5.4.0-1069.72+cvm1.1, 0, 5.4.0-1063.66+cvm3.2 |
| Ubuntu:14.04:LTS | linux-aws | 4.4.0-1032.35, 4.4.0-1022.22, 4.4.0-1009.9 |
| Ubuntu:20.04:LTS | linux-riscv | 5.4.0-36.41, 5.4.0-39.44, 5.4.0-37.42 |
…and 13 more
Timeline
- Jul 2, 2018 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 28, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
- Jan 8, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2018-12896 third-party-advisory
- https://bugzilla.kernel.org/show_bug.cgi?id=200189 third-party-advisory
- https://github.com/lcytxw/bug_repro/tree/master/bug_200189 third-party-advisory
- https://github.com/torvalds/linux/commit/78c9c4dfbf8c04883941445a195276bb4bb92c76 third-party-advisory
- https://ubuntu.com/security/notices/USN-3847-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-3847-2 vendor-advisory
- https://ubuntu.com/security/notices/USN-3847-3 vendor-advisory
- https://ubuntu.com/security/notices/USN-3848-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-3848-2 vendor-advisory
- https://ubuntu.com/security/notices/USN-3849-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-3849-2 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2018-12896 third-party-advisory