CVE-2021-4203: Race Condition
First published: Wed Sep 29 2021(Updated: )
A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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-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 | <5.15 | |
| Linux Linux kernel | =5.15 | |
| Linux Linux kernel | =5.15-rc1 | |
| Linux Linux kernel | =5.15-rc2 | |
| Linux Linux kernel | =5.15-rc3 | |
| Apple iPadOS | ||
| NetApp E-Series SANtricity OS Controller | >=11.0.0<=11.70.2 | |
| Netapp Element Software | ||
| Netapp Hci Management Node | ||
| Netapp Solidfire | ||
| Netapp Bootstrap Os | ||
| Netapp Hci Compute Node | ||
| Netapp A700s Firmware | ||
| Netapp A700s | ||
| Apple macOS Ventura | ||
| Apple macOS Big Sur | ||
| Apple macOS Big Sur | ||
| Apple macOS Ventura | ||
| Apple macOS Big Sur | ||
| Apple macOS Monterey | ||
| Apple macOS Monterey | ||
| Apple macOS Monterey | ||
| Netapp H410c Firmware | ||
| Netapp H410c | ||
| 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 | |
| ubuntu/linux | <4.15.0-163.171 | 4.15.0-163.171 |
| ubuntu/linux | <5.4.0-91.102 | 5.4.0-91.102 |
| ubuntu/linux | <5.13.0-23.23 | 5.13.0-23.23 |
| ubuntu/linux | <5.15~ | 5.15~ |
| ubuntu/linux | <4.4.0-239.273 | 4.4.0-239.273 |
| ubuntu/linux-aws | <4.15.0-1116.123 | 4.15.0-1116.123 |
| ubuntu/linux-aws | <5.4.0-1060.63 | 5.4.0-1060.63 |
| ubuntu/linux-aws | <5.13.0-1008.9 | 5.13.0-1008.9 |
| ubuntu/linux-aws | <5.15~ | 5.15~ |
| ubuntu/linux-aws | <4.4.0-1155.170 | 4.4.0-1155.170 |
| ubuntu/linux-aws | <4.4.0-1117.123 | 4.4.0-1117.123 |
| ubuntu/linux-aws-5.0 | <5.15~ | 5.15~ |
| ubuntu/linux-aws-5.11 | <5.15~ | 5.15~ |
| ubuntu/linux-aws-5.11 | <5.11.0-1023.24~20.04.1 | 5.11.0-1023.24~20.04.1 |
| ubuntu/linux-aws-5.13 | <5.15~ | 5.15~ |
| ubuntu/linux-aws-5.15 | <5.15~ | 5.15~ |
| ubuntu/linux-aws-5.3 | <5.15~ | 5.15~ |
| ubuntu/linux-aws-5.4 | <5.4.0-1060.63~18.04.1 | 5.4.0-1060.63~18.04.1 |
| ubuntu/linux-aws-5.4 | <5.15~ | 5.15~ |
| ubuntu/linux-aws-5.8 | <5.15~ | 5.15~ |
| ubuntu/linux-aws-hwe | <5.15~ | 5.15~ |
| ubuntu/linux-aws-hwe | <4.15.0-1116.123~16.04.1 | 4.15.0-1116.123~16.04.1 |
| ubuntu/linux-azure | <5.4.0-1064.67 | 5.4.0-1064.67 |
| ubuntu/linux-azure | <5.13.0-1009.10 | 5.13.0-1009.10 |
| ubuntu/linux-azure | <4.15.0-1127.140~14.04.1 | 4.15.0-1127.140~14.04.1 |
| ubuntu/linux-azure | <5.15~ | 5.15~ |
| ubuntu/linux-azure | <4.15.0-1127.140~16.04.1 | 4.15.0-1127.140~16.04.1 |
| ubuntu/linux-azure-4.15 | <4.15.0-1127.140 | 4.15.0-1127.140 |
| ubuntu/linux-azure-4.15 | <5.15~ | 5.15~ |
| ubuntu/linux-azure-5.11 | <5.11.0-1023.24~20.04.1 | 5.11.0-1023.24~20.04.1 |
| ubuntu/linux-azure-5.11 | <5.15~ | 5.15~ |
| ubuntu/linux-azure-5.13 | <5.15~ | 5.15~ |
| ubuntu/linux-azure-5.15 | <5.15~ | 5.15~ |
| ubuntu/linux-azure-5.3 | <5.15~ | 5.15~ |
| ubuntu/linux-azure-5.4 | <5.4.0-1064.67~18.04.1 | 5.4.0-1064.67~18.04.1 |
| ubuntu/linux-azure-5.4 | <5.15~ | 5.15~ |
| ubuntu/linux-azure-edge | <5.15~ | 5.15~ |
| ubuntu/linux-azure-fde | <5.4.0-1064.67 | 5.4.0-1064.67 |
| ubuntu/linux-azure-fde | <5.15~ | 5.15~ |
| ubuntu/linux-azure-fde-5.15 | <5.15~ | 5.15~ |
| ubuntu/linux-bluefield | <5.4.0-1022.25 | 5.4.0-1022.25 |
| ubuntu/linux-bluefield | <5.15~ | 5.15~ |
| ubuntu/linux-dell300x | <4.15.0-1031.36 | 4.15.0-1031.36 |
| ubuntu/linux-dell300x | <5.15~ | 5.15~ |
| ubuntu/linux-fips | <5.15~ | 5.15~ |
| ubuntu/linux-gcp | <5.13.0-1008.9 | 5.13.0-1008.9 |
| ubuntu/linux-gcp | <5.15~ | 5.15~ |
| ubuntu/linux-gcp | <4.15.0-1112.126~16.04.1 | 4.15.0-1112.126~16.04.1 |
| ubuntu/linux-gcp | <5.4.0-1058.62 | 5.4.0-1058.62 |
| ubuntu/linux-gcp-4.15 | <4.15.0-1112.126 | 4.15.0-1112.126 |
| ubuntu/linux-gcp-4.15 | <5.15~ | 5.15~ |
| ubuntu/linux-gcp-5.11 | <5.11.0-1024.26~20.04.1 | 5.11.0-1024.26~20.04.1 |
| ubuntu/linux-gcp-5.11 | <5.15~ | 5.15~ |
| ubuntu/linux-gcp-5.13 | <5.15~ | 5.15~ |
| ubuntu/linux-gcp-5.15 | <5.15~ | 5.15~ |
| ubuntu/linux-gcp-5.3 | <5.15~ | 5.15~ |
| ubuntu/linux-gcp-5.4 | <5.4.0-1058.62~18.04.1 | 5.4.0-1058.62~18.04.1 |
| ubuntu/linux-gcp-5.8 | <5.15~ | 5.15~ |
| ubuntu/linux-gke | <5.4.0-1056.59 | 5.4.0-1056.59 |
| ubuntu/linux-gke | <5.15~ | 5.15~ |
| ubuntu/linux-gke-4.15 | <5.15~ | 5.15~ |
| ubuntu/linux-gke-5.0 | <5.15~ | 5.15~ |
| ubuntu/linux-gke-5.15 | <5.15~ | 5.15~ |
| ubuntu/linux-gke-5.3 | <5.15~ | 5.15~ |
| ubuntu/linux-gke-5.4 | <5.15~ | 5.15~ |
| ubuntu/linux-gke-5.4 | <5.4.0-1056.59~18.04.1 | 5.4.0-1056.59~18.04.1 |
| ubuntu/linux-gkeop | <5.4.0-1027.28 | 5.4.0-1027.28 |
| ubuntu/linux-gkeop | <5.15~ | 5.15~ |
| ubuntu/linux-gkeop-5.4 | <5.4.0-1027.28~18.04.1 | 5.4.0-1027.28~18.04.1 |
| ubuntu/linux-gkeop-5.4 | <5.15~ | 5.15~ |
| ubuntu/linux-hwe | <5.15~ | 5.15~ |
| ubuntu/linux-hwe | <4.15.0-163.171~16.04.1 | 4.15.0-163.171~16.04.1 |
| ubuntu/linux-hwe-5.11 | <5.15~ | 5.15~ |
| ubuntu/linux-hwe-5.13 | <5.13.0-23.23~20.04.2 | 5.13.0-23.23~20.04.2 |
| ubuntu/linux-hwe-5.13 | <5.15~ | 5.15~ |
| ubuntu/linux-hwe-5.15 | <5.15~ | 5.15~ |
| ubuntu/linux-hwe-5.4 | <5.4.0-91.102~18.04.1 | 5.4.0-91.102~18.04.1 |
| ubuntu/linux-hwe-5.4 | <5.15~ | 5.15~ |
| ubuntu/linux-hwe-5.8 | <5.15~ | 5.15~ |
| ubuntu/linux-hwe-edge | <5.15~ | 5.15~ |
| ubuntu/linux-ibm | <5.4.0-1008.9 | 5.4.0-1008.9 |
| ubuntu/linux-ibm | <5.15~ | 5.15~ |
| ubuntu/linux-ibm-5.4 | <5.15~ | 5.15~ |
| ubuntu/linux-intel-5.13 | <5.15~ | 5.15~ |
| ubuntu/linux-intel-iotg | <5.15~ | 5.15~ |
| ubuntu/linux-intel-iotg-5.15 | <5.15~ | 5.15~ |
| ubuntu/linux-kvm | <4.15.0-1103.105 | 4.15.0-1103.105 |
| ubuntu/linux-kvm | <5.4.0-1050.52 | 5.4.0-1050.52 |
| ubuntu/linux-kvm | <5.13.0-1007.7 | 5.13.0-1007.7 |
| ubuntu/linux-kvm | <5.15~ | 5.15~ |
| ubuntu/linux-kvm | <4.4.0-1118.128 | 4.4.0-1118.128 |
| ubuntu/linux-lowlatency | <5.15~ | 5.15~ |
| ubuntu/linux-lowlatency-hwe-5.15 | <5.15~ | 5.15~ |
| ubuntu/linux-lowlatency-hwe-5.19 | <5.15~ | 5.15~ |
| ubuntu/linux-lts-xenial | <5.15~ | 5.15~ |
| ubuntu/linux-lts-xenial | <4.4.0-239.273~14.04.1 | 4.4.0-239.273~14.04.1 |
| ubuntu/linux-oem | <5.15~ | 5.15~ |
| ubuntu/linux-oem-5.10 | <5.10.0-1051.53 | 5.10.0-1051.53 |
| ubuntu/linux-oem-5.10 | <5.15~ | 5.15~ |
| ubuntu/linux-oem-5.13 | <5.13.0-1026.32 | 5.13.0-1026.32 |
| ubuntu/linux-oem-5.13 | <5.15~ | 5.15~ |
| ubuntu/linux-oem-5.14 | <5.14.0-1007.7 | 5.14.0-1007.7 |
| ubuntu/linux-oem-5.17 | <5.15~ | 5.15~ |
| ubuntu/linux-oem-5.6 | <5.15~ | 5.15~ |
| ubuntu/linux-oem-6.0 | <5.15~ | 5.15~ |
| ubuntu/linux-oem-6.1 | <5.15~ | 5.15~ |
| ubuntu/linux-oem-osp1 | <5.15~ | 5.15~ |
| ubuntu/linux-oracle | <4.15.0-1084.92 | 4.15.0-1084.92 |
| ubuntu/linux-oracle | <5.4.0-1058.62 | 5.4.0-1058.62 |
| ubuntu/linux-oracle | <5.13.0-1011.13 | 5.13.0-1011.13 |
| ubuntu/linux-oracle | <5.15~ | 5.15~ |
| ubuntu/linux-oracle | <4.15.0-1084.92~16.04.1 | 4.15.0-1084.92~16.04.1 |
| ubuntu/linux-oracle-5.0 | <5.15~ | 5.15~ |
| ubuntu/linux-oracle-5.11 | <5.11.0-1023.24~20.04.1 | 5.11.0-1023.24~20.04.1 |
| ubuntu/linux-oracle-5.11 | <5.15~ | 5.15~ |
| ubuntu/linux-oracle-5.13 | <5.15~ | 5.15~ |
| ubuntu/linux-oracle-5.15 | <5.15~ | 5.15~ |
| ubuntu/linux-oracle-5.3 | <5.15~ | 5.15~ |
| ubuntu/linux-oracle-5.4 | <5.4.0-1058.62~18.04.1 | 5.4.0-1058.62~18.04.1 |
| ubuntu/linux-raspi | <5.13.0-1012.14 | 5.13.0-1012.14 |
| ubuntu/linux-raspi | <5.15~ | 5.15~ |
| ubuntu/linux-raspi | <5.4.0-1047.52 | 5.4.0-1047.52 |
| ubuntu/linux-raspi-5.4 | <5.15~ | 5.15~ |
| ubuntu/linux-raspi-5.4 | <5.4.0-1047.52~18.04.1 | 5.4.0-1047.52~18.04.1 |
| ubuntu/linux-raspi2 | <5.15~ | 5.15~ |
| ubuntu/linux-raspi2 | <4.15.0-1099.106 | 4.15.0-1099.106 |
| ubuntu/linux-raspi2-5.3 | <5.15~ | 5.15~ |
| ubuntu/linux-riscv | <5.15~ | 5.15~ |
| ubuntu/linux-riscv | <5.13.0-1007.7 | 5.13.0-1007.7 |
| ubuntu/linux-riscv-5.11 | <5.11.0-1024.25~20.04.1 | 5.11.0-1024.25~20.04.1 |
| ubuntu/linux-riscv-5.11 | <5.15~ | 5.15~ |
| ubuntu/linux-riscv-5.8 | <5.15~ | 5.15~ |
| ubuntu/linux-snapdragon | <4.15.0-1116.125 | 4.15.0-1116.125 |
| ubuntu/linux-snapdragon | <5.15~ | 5.15~ |
| All of | ||
| Netapp Bootstrap Os | ||
| Netapp Hci Compute Node | ||
| All of | ||
| Netapp A700s Firmware | ||
| Netapp A700s | ||
| All of | ||
| Apple macOS Ventura | ||
| Apple macOS Big Sur | ||
| All of | ||
| Apple macOS Big Sur | ||
| Apple macOS Ventura | ||
| All of | ||
| Apple macOS Big Sur | ||
| Apple macOS Monterey | ||
| All of | ||
| Apple macOS Monterey | ||
| Apple macOS Monterey | ||
| All of | ||
| Netapp H410c Firmware | ||
| Netapp H410c | ||
| redhat/kernel | <5.15 | 5.15 |
| debian/linux | 4.19.249-2 4.19.304-1 5.10.197-1 5.10.205-2 6.1.66-1 6.1.69-1 6.6.13-1 6.6.15-2 |
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Reference Links
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-after%3Atoday-30&sort=-modified&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve&cells=tiles&redir=1
- https://bugzilla.redhat.com/show_bug.cgi?id=2036934
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814
- https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet@gmail.com/T/
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://security.netapp.com/advisory/ntap-20221111-0003/
- https://launchpad.net/bugs/cve/CVE-2021-4203
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-after%3Atoday-30&sort=-modified&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve&cells=tiles&redir=1
- https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet%40gmail.com/T/
- https://access.redhat.com/errata/RHSA-2022:1975
- https://access.redhat.com/errata/RHSA-2022:1988
- https://access.redhat.com/security/cve/cve-2021-4203
- https://access.redhat.com/errata/RHSA-2022:5626
- https://access.redhat.com/errata/RHSA-2022:5633
- https://www.cve.org/CVERecord?id=CVE-2021-4203 https://nvd.nist.gov/vuln/detail/CVE-2021-4203 https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-after%3Atoday-30&sort=-modified&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve&cells=tiles&redir=1 https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814 https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet@gmail.com/T/
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2230
- https://git.kernel.org/linus/35306eb23814444bd4021f8a1c3047d3cb0c8b2b
- https://security-tracker.debian.org/tracker/CVE-2021-4203
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4203
- https://git.kernel.org/linus/35306eb23814444bd4021f8a1c3047d3cb0c8b2b (5.15-rc4)
- https://ubuntu.com/security/notices/USN-6001-1
- https://ubuntu.com/security/notices/USN-6013-1
- https://ubuntu.com/security/notices/USN-6014-1
- https://nvd.nist.gov/vuln/detail/CVE-2021-4203
- https://git.kernel.org/linus/109f6e39fa07c48f580125f531f46cb7c245b528
- https://ubuntu.com/security/CVE-2021-4203
Parent vulnerabilities
(Appears in the following advisories)
- agent/author
- agent/description
- agent/event
- agent/first-publish-date
- agent/last-modified-date
- agent/references
- agent/remedy
- agent/severity
- agent/softwarecombine
- agent/tags
- agent/type
- agent/weakness
- collector/launchpad-cve
- source/Launchpad
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- collector/nvd-index
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2021-4203
- collector/redhat-cve
- collector/security-tracker-debian
- source/Debian
- collector/usn-cve
- source/Ubuntu
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/5.15
- version/linux linux kernel/5.15-rc1
- version/linux linux kernel/5.15-rc2
- version/linux linux kernel/5.15-rc3
- vendor/netapp
- canonical/apple ipados
- canonical/netapp e-series santricity os controller
- version/netapp e-series santricity os controller/11.0.0
- version/netapp e-series santricity os controller/11.70.2
- canonical/netapp element software
- canonical/netapp hci management node
- canonical/netapp solidfire
- canonical/netapp bootstrap os
- canonical/netapp hci compute node
- canonical/netapp a700s firmware
- canonical/netapp a700s
- canonical/apple macos ventura
- canonical/apple macos big sur
- canonical/apple macos monterey
- canonical/netapp h410c firmware
- canonical/netapp h410c
- 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
- package-manager/redhat
- package-manager/debian
- package-manager/ubuntu