Vulnerability Details : CVE-2018-19364
hw/9pfs/cofile.c and hw/9pfs/9p.c in QEMU can modify an fid path while it is being accessed by a second thread, leading to (for example) a use-after-free outcome.
Vulnerability category: Memory Corruption
Products affected by CVE-2018-19364
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:3.1.0:rc0:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:3.1.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-19364
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-19364
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2018-19364
-
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)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-2018-19364
-
https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg02795.html
[Qemu-devel] [PATCH] 9p: take write lock on fid path updatesMailing List;Patch;Vendor Advisory
-
https://www.debian.org/security/2019/dsa-4454
Debian -- Security Information -- DSA-4454-1 qemuThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2019/01/msg00023.html
[SECURITY] [DLA 1646-1] qemu security updateMailing List;Third Party Advisory
-
https://seclists.org/bugtraq/2019/May/76
Bugtraq: [SECURITY] [DSA 4454-1] qemu security updateMailing List;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2018/11/20/1
oss-security - CVE-2018-19364 Qemu: 9pfs: Use-after-free due to race condition while updating fid pathMailing List;Patch;Third Party Advisory
-
https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg01139.html
[Qemu-devel] [PATCH] 9p: write lock path in v9fs_co_open2()Mailing List;Patch;Vendor Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html
[security-announce] openSUSE-SU-2019:1074-1: important: Security updateMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CGCFIFSIWUREEQQOZDZFBYKWZHXCWBZN/
[SECURITY] Fedora 29 Update: qemu-3.0.0-4.fc29 - package-announce - Fedora Mailing-ListsMailing List;Release Notes;Third Party Advisory
-
https://usn.ubuntu.com/3826-1/
USN-3826-1: QEMU vulnerabilities | Ubuntu security noticesThird Party Advisory
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