Vulnerability Details : CVE-2019-18683
Potential exploit
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.
Vulnerability category: Memory CorruptionGain privilege
Products affected by CVE-2019-18683
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:broadcom:fabric_operating_system:-:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
- Netapp » E-series Santricity Os ControllerVersions from including (>=) 11.0.0 and up to, including, (<=) 11.70.1cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
- cpe:2.3:a:netapp:data_availability_services:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:a700s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:8300_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:8700_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:a400_firmware:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-18683
1.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 77 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-18683
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.9
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:C/A:C |
3.4
|
10.0
|
NIST | |
|
7.0
|
HIGH | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.0
|
5.9
|
NIST |
CWE ids for CVE-2019-18683
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The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by: nvd@nist.gov (Primary)
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The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-18683
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https://usn.ubuntu.com/4284-1/
USN-4284-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://seclists.org/bugtraq/2020/Jan/10
Bugtraq: [slackware-security] Slackware 14.2 kernel (SSA:2020-008-01)Mailing List;Patch;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
[security-announce] openSUSE-SU-2019:2675-1: important: Security updateMailing List;Third Party Advisory
-
https://lore.kernel.org/lkml/20191103221719.27118-1-alex.popov@linux.com/
[PATCH v4 1/1] media: vivid: Fix wrong locking that causes race conditions on streaming stop - Alexander PopovPatch;Vendor Advisory
-
https://usn.ubuntu.com/4254-1/
USN-4254-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
http://www.openwall.com/lists/oss-security/2019/11/05/1
oss-security - Re: [ Linux kernel ] Exploitable bugs in drivers/media/platform/vividExploit;Mailing List;Third Party Advisory
-
https://usn.ubuntu.com/4258-1/
USN-4258-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/4287-2/
USN-4287-2: Linux kernel (Azure) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
[SECURITY] [DLA 2114-1] linux-4.9 security updateMailing List;Third Party Advisory
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https://www.openwall.com/lists/oss-security/2019/11/02/1
oss-security - [ Linux kernel ] Exploitable bugs in drivers/media/platform/vividExploit;Mailing List;Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20191205-0001/
November 2019 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product SecurityThird Party Advisory
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https://usn.ubuntu.com/4287-1/
USN-4287-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/4254-2/
USN-4254-2: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
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https://lore.kernel.org/lkml/20191103221719.27118-1-alex.popov%40linux.com/
[PATCH v4 1/1] media: vivid: Fix wrong locking that causes race conditions on streaming stop - Alexander PopovVendor Advisory
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http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
Slackware Security Advisory - Slackware 14.2 kernel Updates ≈ Packet StormThird Party Advisory;VDB Entry
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