Vulnerability Details : CVE-2020-29369
An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.
Products affected by CVE-2020-29369
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
- cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:*
- cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-29369
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 31 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-29369
| 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-2020-29369
-
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)
References for CVE-2020-29369
-
http://www.openwall.com/lists/oss-security/2021/02/19/8
oss-security - Re: CVE-2021-20200: Linux kernel: close race between munmap() and expand_upwards()/downwards()Mailing List;Patch;Third Party Advisory
-
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=246c320a8cfe0b11d81a4af38fa9985ef0cc9a4c
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
-
http://www.openwall.com/lists/oss-security/2021/02/10/6
oss-security - Re: CVE-2021-20200: Linux kernel: close race between munmap() and expand_upwards()/downwards()Mailing List;Patch;Third Party Advisory
-
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.11
Release Notes;Vendor Advisory
-
https://bugs.chromium.org/p/project-zero/issues/detail?id=2056
2056 - Linux >=4.20: expand_downwards() can race with munmap() page table freeing - project-zeroExploit;Issue Tracking;Patch;Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20210115-0001/
CVE-2020-29369 Linux Kernel Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
Jump to