CVE-2020-29368: Race Condition
First published: Wed Jun 03 2020(Updated: )
An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-348.rt7.130.el8 | 0:4.18.0-348.rt7.130.el8 |
| redhat/kernel | <0:4.18.0-348.el8 | 0:4.18.0-348.el8 |
| redhat/kernel-rt | <0:4.18.0-193.87.1.rt13.137.el8_2 | 0:4.18.0-193.87.1.rt13.137.el8_2 |
| redhat/kernel | <0:4.18.0-193.87.1.el8_2 | 0:4.18.0-193.87.1.el8_2 |
| redhat/kernel-rt | <0:4.18.0-305.57.1.rt7.129.el8_4 | 0:4.18.0-305.57.1.rt7.129.el8_4 |
| redhat/kernel | <0:4.18.0-305.57.1.el8_4 | 0:4.18.0-305.57.1.el8_4 |
| Linux Linux kernel | <5.7.5 | |
| Netapp Cloud Backup | ||
| Netapp Element Software | ||
| Netapp Hci Management Node | ||
| Netapp Solidfire | ||
| Netapp Hci Bootstrap Os | ||
| Netapp Hci Compute Node | ||
| Netapp H410c Firmware | ||
| Netapp H410c | ||
| Linux Linux kernel | >=4.5.5<4.9.228 | |
| Linux Linux kernel | >=4.10<4.14.185 | |
| Linux Linux kernel | >=4.15<4.19.129 | |
| Linux Linux kernel | >=4.20<5.4.48 | |
| Linux Linux kernel | >=5.5<5.7.5 | |
| All of | ||
| Netapp Hci Bootstrap Os | ||
| Netapp Hci Compute Node | ||
| All of | ||
| Netapp H410c Firmware | ||
| Netapp H410c | ||
| Google Android | ||
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.9-1 6.12.10-1 |
Remedy
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2020-29368 https://nvd.nist.gov/vuln/detail/CVE-2020-29368
- https://bugzilla.redhat.com/show_bug.cgi?id=1903244
- https://access.redhat.com/errata/RHSA-2021:4140
- https://access.redhat.com/errata/RHSA-2021:4356
- https://access.redhat.com/errata/RHSA-2022:5224
- https://access.redhat.com/errata/RHSA-2022:5220
- https://access.redhat.com/errata/RHSA-2022:5633
- https://access.redhat.com/errata/RHSA-2022:5626
- https://access.redhat.com/security/cve/cve-2020-29368
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2045
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.5
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c444eb564fb16645c172d550359cb3d75fe8a040
- https://security.netapp.com/advisory/ntap-20210108-0002/
- https://launchpad.net/bugs/cve/CVE-2020-29368
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1903245
- https://android.googlesource.com/kernel/common/+/c444eb564fb16645c172d550359cb3d75fe8a040
- https://source.android.com/docs/security/bulletin/2022-03-01 (Advisory)
- https://git.kernel.org/linus/c444eb564fb16645c172d550359cb3d75fe8a040
- https://security-tracker.debian.org/tracker/CVE-2020-29368
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29368
- https://nvd.nist.gov/vuln/detail/CVE-2020-29368
- https://ubuntu.com/security/CVE-2020-29368
Parent vulnerabilities
(Appears in the following advisories)
- collector/redhat-cve
- collector/nvd-index
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2020-29368
- agent/severity
- agent/weakness
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/author
- collector/mitre-cve
- source/MITRE
- collector/android-source
- source/Android
- agent/remedy
- agent/references
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/event
- agent/trending
- agent/tags
- collector/nvd-cve
- agent/last-modified-date
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/source
- package-manager/redhat
- vendor/linux
- canonical/linux linux kernel
- vendor/netapp
- canonical/netapp cloud backup
- canonical/netapp element software
- canonical/netapp hci management node
- canonical/netapp solidfire
- canonical/netapp hci bootstrap os
- canonical/netapp hci compute node
- canonical/netapp h410c firmware
- canonical/netapp h410c
- version/linux linux kernel/4.5.5
- version/linux linux kernel/4.10
- version/linux linux kernel/4.15
- version/linux linux kernel/4.20
- version/linux linux kernel/5.5
- vendor/google
- canonical/google android
- package-manager/debian