Skip to content
OpenAdvisories
High · 7.8 CVE-2021-23134 EUVD-2021-10252GHSA-jm36-c9r2-g7rq

Linux kernel llcp_sock_bind/connect use-after-free

Published May 12, 2021 · Updated Sep 17, 2024 · Assigned by palo_alto

Description

Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.4 allows local attackers to elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local user with the CAP_NET_RAW capability.

Affected products

VendorProductAffectedFixed
Linux Kernel Linux Kernel unspecified – < 5.12.4 5.12.4

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 5.10.38-1 —
Debian 13 linux 5.10.38-1 —
Debian 12 linux 5.10.38-1 —
Debian 9 linux 4.9.272-1 DLA-2689-1
Debian 9 linux-4.19 4.19.194-1~deb9u1 DLA-2690-1
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux-realtime +1 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-77.86 USN-5000-1
Ubuntu 20.04 LTS linux-aws +1 5.4.0-1051.53 USN-5000-1
Ubuntu 20.04 LTS linux-aws-5.8 5.8.0-1041.43~20.04.1 USN-5016-1
Ubuntu 20.04 LTS linux-azure-5.8 5.8.0-1039.42~20.04.1 USN-5016-1
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1013.16 —
Ubuntu 20.04 LTS linux-gcp 5.4.0-1046.49 USN-5000-1
Ubuntu 20.04 LTS linux-gcp-5.8 5.8.0-1038.40~20.04.1 USN-5016-1
Ubuntu 20.04 LTS linux-gke 5.4.0-1046.48 USN-5000-1
Ubuntu 20.04 LTS linux-gkeop 5.4.0-1018.19 USN-5000-1
Ubuntu 20.04 LTS linux-hwe-5.8 5.8.0-63.71~20.04.1 USN-5016-1
Ubuntu 20.04 LTS linux-kvm 5.4.0-1041.42 USN-5000-2
Ubuntu 20.04 LTS linux-oem-5.10 5.10.0-1032.33 USN-5001-1
Ubuntu 20.04 LTS linux-oracle 5.4.0-1048.52 USN-5000-1
Ubuntu 20.04 LTS linux-oracle-5.8 5.8.0-1037.38~20.04.1 USN-5016-1
Ubuntu 20.04 LTS linux-raspi 5.4.0-1038.41 USN-5000-1
Ubuntu 20.04 LTS linux-riscv +2 No fix yet —
Ubuntu 18.04 LTS linux 4.15.0-151.157 USN-5018-1
Ubuntu 18.04 LTS linux-aws 4.15.0-1109.116 USN-5018-1
Ubuntu 18.04 LTS linux-aws-5.4 +1 5.4.0-1051.53~18.04.1 USN-5000-1
Ubuntu 18.04 LTS linux-azure-4.15 4.15.0-1121.134 USN-5018-1
Ubuntu 18.04 LTS linux-dell300x 4.15.0-1027.32 —
Ubuntu 18.04 LTS linux-gcp +12 No fix yet —
Ubuntu 18.04 LTS linux-gcp-4.15 4.15.0-1106.120 USN-5018-1
Ubuntu 18.04 LTS linux-gcp-5.4 5.4.0-1046.49~18.04.1 USN-5000-1
Ubuntu 18.04 LTS linux-gke-5.4 5.4.0-1046.48~18.04.1 USN-5000-1
Ubuntu 18.04 LTS linux-gkeop-5.4 5.4.0-1018.19~18.04.1 USN-5000-1
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-77.86~18.04.1 USN-5000-1
Ubuntu 18.04 LTS linux-kvm 4.15.0-1097.99 USN-5018-1
Ubuntu 18.04 LTS linux-oracle 4.15.0-1078.86 USN-5018-1
Ubuntu 18.04 LTS linux-oracle-5.4 5.4.0-1048.52~18.04.1 USN-5000-1
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1038.41~18.04.1 USN-5000-1
Ubuntu 18.04 LTS linux-raspi2 4.15.0-1092.98 USN-5018-1
Ubuntu 18.04 LTS linux-snapdragon 4.15.0-1109.118 USN-5018-1
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1028.32 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2051.53 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2033.37 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1066.75 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2016.18 —
Ubuntu Pro 16.04 LTS linux 4.4.0-222.255 USN-5343-1
Ubuntu Pro 16.04 LTS linux-aws 4.4.0-1138.152 USN-5343-1
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1109.116~16.04.1 USN-5018-1
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1121.134~16.04.1 USN-5018-1
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1106.120~16.04.1 USN-5018-1
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-151.157~16.04.1 USN-5018-1
Ubuntu Pro 16.04 LTS linux-kvm 4.4.0-1103.112 USN-5343-1
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1078.86~16.04.1 USN-5018-1
Ubuntu Pro 14.04 LTS linux-aws 4.4.0-1102.107 USN-5343-1
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1121.134~14.04.1 USN-5018-1
Ubuntu Pro 14.04 LTS linux-lts-xenial 4.4.0-222.255~14.04.1 USN-5343-1
ReleasePackageFixed inAdvisory
SLES 15 SP3 kernel-64kb +5 5.3.18-59.5.2 SUSE-SU-2024:1489-1, SUSE-SU-2021:1977-1
SLES 15 SP3 kernel-azure +2 5.3.18-38.3.1 SUSE-SU-2021:1975-1
SLES 15 SP3 kernel-default-base 5.3.18-59.5.2.18.2.2 SUSE-SU-2024:1489-1, SUSE-SU-2021:1977-1
SLES 15 SP3 kernel-syms +1 5.3.18-59.5.1 SUSE-SU-2024:1489-1, SUSE-SU-2021:1977-1
SLES 15 SP2 kernel-azure +1 5.3.18-18.50.2 SUSE-SU-2021:1888-1
SLES 15 SP2 kernel-default-base 5.3.18-24.67.3.9.30.2 SUSE-SU-2024:1454-1, SUSE-SU-2021:1890-1
SLES 15 SP2 kernel-docs +1 5.3.18-24.67.3 SUSE-SU-2024:1454-1, SUSE-SU-2021:1890-1
SLES 15 SP2 kernel-preempt 5.3.18-24.67.4 SUSE-SU-2024:1454-1, SUSE-SU-2021:1890-1
SLES 15 SP2 kernel-source +1 5.3.18-24.67.2 SUSE-SU-2024:1454-1, SUSE-SU-2021:1890-1
SLES 15 SP2 kernel-syms 5.3.18-24.67.1 SUSE-SU-2024:1454-1, SUSE-SU-2021:1890-1
SLES 15 SP2 kernel-syms-azure 5.3.18-18.50.1 SUSE-SU-2021:1888-1
SLES 15 SP1 kernel-docs +5 4.12.14-197.92.1 SUSE-SU-2021:1912-1
SLES 15 kernel-docs +6 4.12.14-150.75.1 SUSE-SU-2021:2421-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.59.1 SUSE-SU-2024:1643-1, SUSE-SU-2021:1887-1
SLES 12 SP5 kernel-docs 4.12.14-122.74.2 SUSE-SU-2024:1870-1, SUSE-SU-2021:1913-1
SLES 12 SP5 kernel-syms +3 4.12.14-122.74.1 SUSE-SU-2024:1870-1, SUSE-SU-2021:1913-1
Show 36 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES 12 SP4 kernel-syms +2 4.12.14-95.77.1 SUSE-SU-2021:1891-1
SLES 12 SP3 kernel-syms +2 4.4.180-94.147.1 SUSE-SU-2021:2451-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_37 14-2.2 SUSE-SU-2022:0325-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_38 13-2.2 SUSE-SU-2022:0325-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_39 10-2.2 SUSE-SU-2022:0327-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_40 1-4.3.1 SUSE-SU-2021:2451-1
SLES 12 SP2 kernel-syms +2 4.4.121-92.158.1 SUSE-SU-2021:2406-1
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SLES for SAP 15 SP3 kernel-docs +5 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLES for SAP 15 SP2 kernel-default-base 5.3.18-150200.24.188.1.150200.9.95.3 SUSE-SU-2024:1454-1
SLES for SAP 15 SP2 kernel-docs +5 5.3.18-150200.24.188.1 SUSE-SU-2024:1454-1
SLES for SAP 15 SP1 kernel-docs +4 4.12.14-197.92.1 SUSE-SU-2021:1912-1
SLES for SAP 15 kernel-docs +5 4.12.14-150.75.1 SUSE-SU-2021:2421-1
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.59.1 SUSE-SU-2024:1643-1, SUSE-SU-2021:1887-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.74.1 SUSE-SU-2024:1870-1, SUSE-SU-2021:1913-1
SLES for SAP 12 SP4 kernel-syms +2 4.12.14-95.77.1 SUSE-SU-2021:1891-1
SLES for SAP 12 SP3 kernel-syms +2 4.4.180-94.147.1 SUSE-SU-2021:2451-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_37 14-2.2 SUSE-SU-2022:0325-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_38 13-2.2 SUSE-SU-2022:0325-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_39 10-2.2 SUSE-SU-2022:0327-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_40 1-4.3.1 SUSE-SU-2021:2451-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.46.1 SUSE-SU-2021:1899-1
SLE Micro 5.2 kernel-default 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SLE Micro 5.1 kernel-default 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLE Micro 5.1 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SLE Micro 5.0 kernel-default 5.3.18-24.67.3 SUSE-SU-2021:1890-1
SLE Micro 5.0 kernel-default-base 5.3.18-24.67.3.9.30.2 SUSE-SU-2021:1890-1
SLE Micro 5.0 kernel-rt 5.3.18-8.13.1 SUSE-SU-2021:2208-1
SLE Live Patching 15 SP3 kernel-default 5.3.18-59.5.2 SUSE-SU-2024:1489-1, SUSE-SU-2021:1977-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_0 10-3.2 SUSE-SU-2022:0293-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_1 1-7.5.1 SUSE-SU-2021:1977-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_43 1-150300.7.3.5 SUSE-SU-2024:1489-1
SLE Live Patching 15 SP2 kernel-default 5.3.18-24.67.3 SUSE-SU-2024:1454-1, SUSE-SU-2021:1890-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_10 14-2.2 SUSE-SU-2022:0291-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_11 13-2.2 SUSE-SU-2022:0291-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_12 +1 2-2.1 SUSE-SU-2021:2067-1, SUSE-SU-2021:2027-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_14 1-5.3.2 SUSE-SU-2021:1890-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_47 1-150200.5.3.3 SUSE-SU-2024:1454-1
SLE Live Patching 15 SP1 kernel-default 4.12.14-197.92.1 SUSE-SU-2021:1912-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_22 14-2.2 SUSE-SU-2022:0263-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_23 13-2.2 SUSE-SU-2022:0234-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_24 2-2.1 SUSE-SU-2021:2020-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_25 1-3.3.1 SUSE-SU-2021:1912-1
SLE Live Patching 15 kernel-default 4.12.14-150.75.1 SUSE-SU-2021:2421-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_22 14-2.2 SUSE-SU-2022:0255-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_23 13-2.2 SUSE-SU-2022:0243-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_24 2-2.1 SUSE-SU-2021:2057-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_25 1-1.3.1 SUSE-SU-2021:2421-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.74.1 SUSE-SU-2024:1870-1, SUSE-SU-2021:1913-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_15 14-2.2 SUSE-SU-2022:0263-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_16 13-2.2 SUSE-SU-2022:0234-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_17 3-2.1 SUSE-SU-2021:2067-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_18 2-2.1 SUSE-SU-2021:2020-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_19 +1 1-8.3.1 SUSE-SU-2024:1870-1, SUSE-SU-2021:1913-1
SLE Live Patching 12 SP4 kernel-default 4.12.14-95.77.1 SUSE-SU-2021:1891-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_18 14-2.2 SUSE-SU-2022:0296-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_19 13-2.2 SUSE-SU-2022:0296-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_20 2-2.1 SUSE-SU-2021:2020-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_21 1-6.3.1 SUSE-SU-2021:1891-1
SLE HPC 15 SP3 kernel-64kb +6 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLE HPC 15 SP3 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SLE HPC 15 SP2 kernel-default-base 5.3.18-150200.24.188.1.150200.9.95.3 SUSE-SU-2024:1454-1
SLE HPC 15 SP2 kernel-docs +5 5.3.18-150200.24.188.1 SUSE-SU-2024:1454-1
SLE HPC 15 SP1 kernel-docs +4 4.12.14-197.92.1 SUSE-SU-2021:1912-1
SLE HPC 15 kernel-docs +5 4.12.14-150.75.1 SUSE-SU-2021:2421-1
SUSE Real Time Module 15 SP3 kernel-rt +3 5.3.18-8.13.1 SUSE-SU-2021:2208-1
SUSE Real Time Module 15 SP2 kernel-rt +3 5.3.18-39.1 SUSE-SU-2021:1889-1
SUSE OpenStack Cloud Crowbar 9 kernel-syms +2 4.12.14-95.77.1 SUSE-SU-2021:1891-1
SUSE OpenStack Cloud Crowbar 8 kernel-syms +2 4.4.180-94.147.1 SUSE-SU-2021:2451-1
SUSE OpenStack Cloud Crowbar 8 kgraft-patch-SLE12-SP3_Update_40 1-4.3.1 SUSE-SU-2021:2451-1
SUSE OpenStack Cloud 9 kernel-syms +2 4.12.14-95.77.1 SUSE-SU-2021:1891-1
SUSE OpenStack Cloud 8 kernel-syms +2 4.4.180-94.147.1 SUSE-SU-2021:2451-1
SUSE OpenStack Cloud 8 kgraft-patch-SLE12-SP3_Update_40 1-4.3.1 SUSE-SU-2021:2451-1
SUSE Manager Server 4.0 kernel-docs +5 4.12.14-197.92.1 SUSE-SU-2021:1912-1
SUSE Manager Retail Branch Server 4.0 kernel-docs +4 4.12.14-197.92.1 SUSE-SU-2021:1912-1
SUSE Manager Proxy 4.0 kernel-docs +4 4.12.14-197.92.1 SUSE-SU-2021:1912-1
SUSE HPE Helion OpenStack 8 kernel-syms +2 4.4.180-94.147.1 SUSE-SU-2021:2451-1
SUSE HPE Helion OpenStack 8 kgraft-patch-SLE12-SP3_Update_40 1-4.3.1 SUSE-SU-2021:2451-1
SUSE Enterprise Storage 7.1 kernel-64kb +6 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SUSE Enterprise Storage 6 kernel-docs +4 4.12.14-197.92.1 SUSE-SU-2021:1912-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.3 kernel-64kb +7 5.3.18-59.5.2 openSUSE-SU-2021:1977-1
openSUSE Leap 15.3 kernel-azure +2 5.3.18-38.3.1 openSUSE-SU-2021:1975-1
openSUSE Leap 15.3 kernel-default-base 5.3.18-59.5.2.18.2.2 openSUSE-SU-2021:1977-1
openSUSE Leap 15.3 kernel-syms +2 5.3.18-59.5.1 openSUSE-SU-2021:1977-1
openSUSE Leap 15.2 kernel-default-base 5.3.18-lp152.78.1.lp152.8.34.1 openSUSE-SU-2021:0843-1
openSUSE Leap 15.2 kernel-docs +8 5.3.18-lp152.78.1 openSUSE-SU-2021:0843-1
openSUSE Leap 15.2 kernel-rt +3 5.3.18-lp152.3.14.1 openSUSE-SU-2021:0947-1

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 2 (CBL-Mariner) kernel 5.10.78.1-1 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 7 kernel-uek-container 4.14.35-2047.507.7.4.el7 ELSA-2021-9453, ELSA-2021-9406
Oracle Linux 7 kernel-uek-container-debug 5.4.17-2102.204.4.2.el8 ELSA-2021-9406
Oracle Linux 7 perf +10 4.14.35-2047.507.7.4.el7uek ELSA-2021-9452, ELSA-2021-9404

Advisories 48

References