VulnerabilityModified
CVE-2020-29369
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 7.0EPSS 0.46%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.46%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- 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
- 0.46% probability · 38th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- linux/linux kernel · netapp/hci management node · netapp/solidfire · netapp/hci compute node · netapp/hci storage node
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2021/02/10/6Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/02/19/8Mailing List, Patch, Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2056Exploit, Issue Tracking, Patch, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.11Release Notes, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=246c320a8cfe0b11d81a4af38fa9985ef0cc9a4cPatch, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20210115-0001/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/02/10/6Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/02/19/8Mailing List, Patch, Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2056Exploit, Issue Tracking, Patch, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.11Release Notes, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=246c320a8cfe0b11d81a4af38fa9985ef0cc9a4cPatch, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20210115-0001/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.