CVE-2017-18344
The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access
02 Description
The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access
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
- 3.44% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 88.4% 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:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
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
- 2018-07-26 19:00Z8 YR AGO
- Last updated
- 2024-08-05 21:20Z2 YR AGO
- Reserved
- 2018-07-26
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-125Out-of-bounds ReadBase
- Data version
- 5.1
- Document digest
- 66780f04daefb8736bd7c0c29fadccf996a9f669653656cb8858390e40600ab5
05 Affected products
06 References
- access.redhat.comRHSA-2018:3540https://access.redhat.com/errata/RHSA-2018:3540
- access.redhat.comRHSA-2018:3083https://access.redhat.com/errata/RHSA-2018:3083
- access.redhat.comRHSA-2018:3591https://access.redhat.com/errata/RHSA-2018:3591
- access.redhat.comRHSA-2018:3459https://access.redhat.com/errata/RHSA-2018:3459
- www.securitytracker.com1041414http://www.securitytracker.com/id/1041414
- cdn.kernel.orghttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8
- access.redhat.comRHSA-2018:3590https://access.redhat.com/errata/RHSA-2018:3590
- access.redhat.comRHSA-2018:2948https://access.redhat.com/errata/RHSA-2018:2948
- github.comhttps://github.com/torvalds/linux/commit/cef31d9af908243421258f1df35a4a644604efbe
- usn.ubuntu.comUSN-3742-2https://usn.ubuntu.com/3742-2/
- www.securityfocus.com104909http://www.securityfocus.com/bid/104909
- usn.ubuntu.comUSN-3742-1https://usn.ubuntu.com/3742-1/
- access.redhat.comRHSA-2018:3586https://access.redhat.com/errata/RHSA-2018:3586
- www.exploit-db.com45175https://www.exploit-db.com/exploits/45175/
- access.redhat.comRHSA-2018:3096https://access.redhat.com/errata/RHSA-2018:3096
07 Fixed in
Debian 12
- linux Fixed in 4.14.12-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 4.14.12-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 4.14.12-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- linux Fixed in 3.13.0-155.205
- linux-aws Fixed in 4.4.0-1017.17
- linux-lts-xenial Fixed in 4.4.0-121.145~14.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux Fixed in 4.4.0-121.145
- linux-aws Fixed in 4.4.0-1055.64
- linux-azure Fixed in 4.15.0-1013.13~16.04.2
- linux-euclid Fixed in 4.4.0-9029.31
- linux-gcp Fixed in 4.15.0-1014.14~16.04.1
- linux-hwe Fixed in 4.15.0-24.26~16.04.1
- linux-kvm Fixed in 4.4.0-1021.26
- linux-raspi2 Fixed in 4.4.0-1087.95
- linux-snapdragon Fixed in 4.4.0-1090.95
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux-azure-fde No fix yet
- linux-gke No fix yet
- linux-raspi2 No fix yet
- linux-riscv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- linux-intel-iot-realtime No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux-raspi-realtime No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 16.04 LTS
- linux-fips Fixed in 4.4.0-1008.10Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.