CVE-2019-18683
It is exploitable for privilege escalation on some Linux distributions where local users have /dev/video0 access, but only if the driver happens to be loaded.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in drivers/media/platform/vivid in the Linux kernel through 5.3.8. It is exploitable for privilege escalation on some Linux distributions where local users have /dev/video0 access, but only if the driver happens to be loaded. There are multiple race conditions during streaming stopping in this driver (part of the V4L2 subsystem). These issues are caused by wrong mutex locking in vivid_stop_generating_vid_cap(), vivid_stop_generating_vid_out(), sdr_cap_stop_streaming(), and the corresponding kthreads. At least one of these race conditions leads to a use-after-free.
- CVSS 3.1
- 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.98% probability · 60th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-362, CWE-416
- Affected
- linux/linux kernel · canonical/ubuntu linux · opensuse/leap · netapp/active iq unified manager · netapp/cloud backup · netapp/data availability services · netapp/e-series santricity os controller · netapp/element software · netapp/hci management node · netapp/solidfire · netapp/steelstore cloud integrated storage · broadcom/fabric operating system · netapp/a700s firmware · netapp/8300 firmware · netapp/8700 firmware · netapp/a400 firmware · netapp/h610s firmware · debian/debian linux
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.htmlMailing List, Third Party Advisory
- http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.htmlThird Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2019/11/05/1Exploit, Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing List, Third Party Advisory
- https://lore.kernel.org/lkml/20191103221719.27118-1-alex.popov%40linux.com/Vendor Advisory
- https://seclists.org/bugtraq/2020/Jan/10Mailing List, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20191205-0001/Third Party Advisory
- https://usn.ubuntu.com/4254-1/Third Party Advisory
- https://usn.ubuntu.com/4254-2/Third Party Advisory
- https://usn.ubuntu.com/4258-1/Third Party Advisory
- https://usn.ubuntu.com/4284-1/Third Party Advisory
- https://usn.ubuntu.com/4287-1/Third Party Advisory
- https://usn.ubuntu.com/4287-2/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2019/11/02/1Exploit, Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.htmlMailing List, Third Party Advisory
- http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.htmlThird Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2019/11/05/1Exploit, Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing List, Third Party Advisory
- https://lore.kernel.org/lkml/20191103221719.27118-1-alex.popov%40linux.com/Vendor Advisory
- https://seclists.org/bugtraq/2020/Jan/10Mailing List, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20191205-0001/Third Party Advisory
- https://usn.ubuntu.com/4254-1/Third Party Advisory
- https://usn.ubuntu.com/4254-2/Third Party Advisory
- https://usn.ubuntu.com/4258-1/Third Party Advisory
- https://usn.ubuntu.com/4284-1/Third Party Advisory
- https://usn.ubuntu.com/4287-1/Third Party Advisory
- https://usn.ubuntu.com/4287-2/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2019/11/02/1Exploit, Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.