CVE-2021-4083: Race Condition
First published: Fri Dec 03 2021(Updated: )
A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system.
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:3.10.0-1160.62.1.rt56.1203.el7 | 0:3.10.0-1160.62.1.rt56.1203.el7 |
| redhat/kernel | <0:3.10.0-1160.62.1.el7 | 0:3.10.0-1160.62.1.el7 |
| redhat/kernel | <0:3.10.0-514.101.1.el7 | 0:3.10.0-514.101.1.el7 |
| redhat/kernel | <0:3.10.0-693.99.1.el7 | 0:3.10.0-693.99.1.el7 |
| redhat/kernel | <0:3.10.0-957.92.1.el7 | 0:3.10.0-957.92.1.el7 |
| redhat/kernel | <0:3.10.0-1062.66.1.el7 | 0:3.10.0-1062.66.1.el7 |
| redhat/kernel-rt | <0:4.18.0-372.9.1.rt7.166.el8 | 0:4.18.0-372.9.1.rt7.166.el8 |
| redhat/kernel | <0:4.18.0-372.9.1.el8 | 0:4.18.0-372.9.1.el8 |
| redhat/kernel | <0:4.18.0-147.64.1.el8_1 | 0:4.18.0-147.64.1.el8_1 |
| redhat/kernel-rt | <0:4.18.0-193.79.1.rt13.129.el8_2 | 0:4.18.0-193.79.1.rt13.129.el8_2 |
| redhat/kernel | <0:4.18.0-193.79.1.el8_2 | 0:4.18.0-193.79.1.el8_2 |
| redhat/kernel-rt | <0:4.18.0-305.45.1.rt7.117.el8_4 | 0:4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel | <0:4.18.0-305.45.1.el8_4 | 0:4.18.0-305.45.1.el8_4 |
| redhat/redhat-virtualization-host | <0:4.3.22-20220330.1.el7_9 | 0:4.3.22-20220330.1.el7_9 |
| redhat/kernel | <5.16 | 5.16 |
| Linux Linux kernel | <4.4.294 | |
| Linux Linux kernel | >=4.5<4.9.292 | |
| Linux Linux kernel | >=4.10<4.14.257 | |
| Linux Linux kernel | >=4.15<4.19.220 | |
| Linux Linux kernel | >=4.20<5.4.164 | |
| Linux Linux kernel | >=5.5.0<5.10.84 | |
| Linux Linux kernel | >=5.11<5.15.7 | |
| Linux Linux kernel | =5.16-rc1 | |
| Linux Linux kernel | =5.16-rc2 | |
| Linux Linux kernel | =5.16-rc3 | |
| Netapp H410c Firmware | ||
| Netapp H410c | ||
| Netapp H300s Firmware | ||
| Netapp H300s | ||
| Netapp H500s Firmware | ||
| Netapp H500s | ||
| Netapp H700s Firmware | ||
| Netapp H700s | ||
| Netapp H300e Firmware | ||
| Netapp H300e | ||
| Netapp H500e Firmware | ||
| Netapp H500e | ||
| Netapp H700e Firmware | ||
| Netapp H700e | ||
| Netapp H410s Firmware | ||
| Netapp H410s | ||
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| Netapp Hci Management Node | ||
| Netapp Solidfire | ||
| Oracle Communications Cloud Native Core Binding Support Function | =22.1.3 | |
| Oracle Communications Cloud Native Core Network Exposure Function | =22.1.1 | |
| Oracle Communications Cloud Native Core Policy | =22.2.0 | |
| Google Android | ||
| All of | ||
| Netapp H410c Firmware | ||
| Netapp H410c | ||
| All of | ||
| Netapp H300s Firmware | ||
| Netapp H300s | ||
| All of | ||
| Netapp H500s Firmware | ||
| Netapp H500s | ||
| All of | ||
| Netapp H700s Firmware | ||
| Netapp H700s | ||
| All of | ||
| Netapp H300e Firmware | ||
| Netapp H300e | ||
| All of | ||
| Netapp H500e Firmware | ||
| Netapp H500e | ||
| All of | ||
| Netapp H700e Firmware | ||
| Netapp H700e | ||
| All of | ||
| Netapp H410s Firmware | ||
| Netapp H410s | ||
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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.
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-4083 https://nvd.nist.gov/vuln/detail/CVE-2021-4083 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=054aa8d439b9
- https://bugzilla.redhat.com/show_bug.cgi?id=2029923
- https://access.redhat.com/errata/RHSA-2022:1199
- https://access.redhat.com/errata/RHSA-2022:1185
- https://access.redhat.com/errata/RHSA-2022:1198
- https://access.redhat.com/errata/RHSA-2022:2189
- https://access.redhat.com/errata/RHSA-2022:1104
- https://access.redhat.com/errata/RHSA-2022:1107
- https://access.redhat.com/errata/RHSA-2022:1103
- https://access.redhat.com/errata/RHSA-2022:1324
- https://access.redhat.com/errata/RHSA-2022:1373
- https://access.redhat.com/errata/RHSA-2022:1975
- https://access.redhat.com/errata/RHSA-2022:1988
- https://access.redhat.com/errata/RHSA-2022:0823
- https://access.redhat.com/errata/RHSA-2022:0851
- https://access.redhat.com/errata/RHSA-2022:0958
- https://access.redhat.com/errata/RHSA-2022:0821
- https://access.redhat.com/errata/RHSA-2022:0820
- https://access.redhat.com/errata/RHSA-2022:0925
- https://access.redhat.com/errata/RHSA-2022:1413
- https://access.redhat.com/errata/RHSA-2022:1418
- https://access.redhat.com/errata/RHSA-2022:1455
- https://access.redhat.com/errata/RHSA-2022:1263
- https://access.redhat.com/errata/RHSA-2022:4896
- https://access.redhat.com/security/cve/cve-2021-4083
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=054aa8d439b9
- https://security.netapp.com/advisory/ntap-20220217-0005/
- https://www.debian.org/security/2022/dsa-5096
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://launchpad.net/bugs/cve/CVE-2021-4083
- https://access.redhat.com/security/cve/CVE-2021-0920
- https://android.googlesource.com/kernel/common/+/054aa8d439b9185d4f5eb9a90282d1ce74772969
- https://source.android.com/docs/security/bulletin/2022-09-01 (Advisory)
- https://git.kernel.org/linus/054aa8d439b9185d4f5eb9a90282d1ce74772969
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2247
- https://security-tracker.debian.org/tracker/CVE-2021-4083
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4083
- https://nvd.nist.gov/vuln/detail/CVE-2021-4083
- https://ubuntu.com/security/CVE-2021-4083
Parent vulnerabilities
(Appears in the following advisories)
- RHSA-2022:1199
- RHSA-2022:1185
- RHSA-2022:1198
- RHSA-2022:2189
- RHSA-2022:1104
- RHSA-2022:1107
- RHSA-2022:1103
- RHSA-2022:1324
- RHSA-2022:1373
- RHSA-2022:1975
- RHSA-2022:1988
- RHSA-2022:0823
- RHSA-2022:0851
- RHSA-2022:0958
- RHSA-2022:0821
- RHSA-2022:0820
- RHSA-2022:0925
- RHSA-2022:1413
- RHSA-2022:1418
- RHSA-2022:1455
- RHSA-2022:1263
- RHSA-2022:4896
- collector/redhat-cve
- collector/launchpad-cve
- source/Launchpad
- agent/type
- agent/first-publish-date
- agent/author
- agent/weakness
- agent/severity
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2021-4083
- agent/software-canonical-lookup
- collector/nvd-api
- agent/software-canonical-lookup-request
- collector/nvd-index
- collector/android-source
- source/Android
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/references
- collector/usn-cve
- source/Ubuntu
- agent/tags
- agent/description
- agent/event
- collector/nvd-cve
- source/NVD
- agent/last-modified-date
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/trending
- package-manager/redhat
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/4.5
- version/linux linux kernel/4.10
- version/linux linux kernel/4.15
- version/linux linux kernel/4.20
- version/linux linux kernel/5.5.0
- version/linux linux kernel/5.11
- version/linux linux kernel/5.16-rc1
- version/linux linux kernel/5.16-rc2
- version/linux linux kernel/5.16-rc3
- vendor/netapp
- canonical/netapp h410c firmware
- canonical/netapp h410c
- canonical/netapp h300s firmware
- canonical/netapp h300s
- canonical/netapp h500s firmware
- canonical/netapp h500s
- canonical/netapp h700s firmware
- canonical/netapp h700s
- canonical/netapp h300e firmware
- canonical/netapp h300e
- canonical/netapp h500e firmware
- canonical/netapp h500e
- canonical/netapp h700e firmware
- canonical/netapp h700e
- canonical/netapp h410s firmware
- canonical/netapp h410s
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- version/debian debian linux/10.0
- canonical/netapp hci management node
- canonical/netapp solidfire
- vendor/oracle
- canonical/oracle communications cloud native core binding support function
- version/oracle communications cloud native core binding support function/22.1.3
- canonical/oracle communications cloud native core network exposure function
- version/oracle communications cloud native core network exposure function/22.1.1
- canonical/oracle communications cloud native core policy
- version/oracle communications cloud native core policy/22.2.0
- vendor/google
- canonical/google android
- package-manager/debian