Home/CVE/An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand
CVE

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

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.

HIGH · CVSS 7 EPSS 0.00079
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
▤

Affected Products & Versions

6
linux kernel>= 4.20 and < 5.4.54
linux kernel>= 5.5 and < 5.7.11
netapp hci management nodeall versions
netapp solidfireall versions
netapp hci compute nodeall versions
netapp hci storage nodeall versions
⚠

Public Exploits & PoCs

1
pocbugs.chromium.org · detail?id=2056bugs.chromium.org
▣

Scoring & Timeline

7
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD28 Nov 2020 · 07:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

9
usnUSN-4752-1
suse-csafopenSUSE-SU-2021:0242-1
suse-csafSUSE-SU-2020:3843-1
suse-csafopenSUSE-SU-2020:2260-1
suse-csafSUSE-SU-2020:3764-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2021/02/10/6Mailing ListPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/19/8Mailing ListPatchThird Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.11Release NotesVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=246c320a8cfe0b11d81a4af38fa9985ef0cc9a4cPatchVendor Advisory
https://security.netapp.com/advisory/ntap-20210115-0001/Third Party Advisory
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