CVE-2018-20669
A local attacker can craft a malicious IOCTL function call to overwrite arbitrary kernel memory, resulting in a Denial of Service or privilege escalation.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.58% probability · 46th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- linux/linux kernel · canonical/ubuntu linux · netapp/hci management node · netapp/snapprotect · netapp/solidfire · netapp/cn1610 firmware
- Source
- cve@mitre.org
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/i915/i915_gem_execbuffer.cRelease Notes, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00042.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/01/23/6Exploit, Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/106748Broken Link, Third Party Advisory, VDB Entry
- https://access.redhat.com/security/cve/cve-2018-20669Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190404-0002/Third Party Advisory
- https://support.f5.com/csp/article/K32059550Third Party Advisory
- https://usn.ubuntu.com/4485-1/Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/i915/i915_gem_execbuffer.cRelease Notes, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00042.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/01/23/6Exploit, Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/106748Broken Link, Third Party Advisory, VDB Entry
- https://access.redhat.com/security/cve/cve-2018-20669Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190404-0002/Third Party Advisory
- https://support.f5.com/csp/article/K32059550Third Party Advisory
- https://usn.ubuntu.com/4485-1/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.