CVE-2018-20669
What it is
An issue where a provided address with access_ok() is not checked was discovered in i915_gem_execbuffer2_ioctl in drivers/gpu/drm/i915/i915_gem_execbuffer.c in the Linux kernel through 4.19.13. A local attacker can craft a malicious IOCTL function call to overwrite arbitrary kernel memory, resulting in a Denial of Service or privilege escalation.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.6% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.6% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.6% · EPSS, next 30 days
- Weakness
- CWE-20 · Improper input validation
- Record status
- Modified
Affected
- Linux Kernel < 4.14.185
- Linux Kernel < 4.19.129
- Linux Kernel < 5.0
- Canonical Ubuntu Linux 14.04
- Canonical Ubuntu Linux 16.04
- Canonical Ubuntu Linux 18.04
- Netapp Hci Management Node
- Netapp Snapprotect
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2018-20669.md and follow it. Check whether this project is affected by CVE-2018-20669. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/i915/i915_gem_execbuffer.c
- http://www.openwall.com/lists/oss-security/2019/01/23/6
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/i915/i915_gem_execbuffer.c
- http://www.openwall.com/lists/oss-security/2019/01/23/6
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/i915/i915_gem_execbuffer.c
- http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00042.html
- http://www.openwall.com/lists/oss-security/2019/01/23/6
- http://www.securityfocus.com/bid/106748
- https://access.redhat.com/security/cve/cve-2018-20669
- https://security.netapp.com/advisory/ntap-20190404-0002/
- https://support.f5.com/csp/article/K32059550
- https://usn.ubuntu.com/4485-1/
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/i915/i915_gem_execbuffer.c
- http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00042.html
- http://www.openwall.com/lists/oss-security/2019/01/23/6
- http://www.securityfocus.com/bid/106748
- https://access.redhat.com/security/cve/cve-2018-20669
- https://security.netapp.com/advisory/ntap-20190404-0002/
- https://support.f5.com/csp/article/K32059550
- https://usn.ubuntu.com/4485-1/