🛡️ UBUNTU-CVE-2021-47202
⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In the Linux kernel, the following vulnerability has been resolved: thermal: Fix NULL pointer dereferences in of_thermal_ functions of_parse_thermal_zones() parses the thermal-zones node and registers a thermal_zone device for each subnode. However, if a thermal zone is consuming a thermal sensor and that thermal sensor device hasn't probed yet, an attempt to set trip_point_*_temp for that thermal zone device can cause a NULL pointer dereference. Fix it. console:/sys/class/thermal/thermal_zone87 # echo 120000 > trip_point_0_temp ... Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020 ... Call trace: of_thermal_set_trip_temp+0x40/0xc4 trip_point_temp_store+0xc0/0x1dc dev_attr_store+0x38/0x88 sysfs_kf_write+0x64/0xc0 kernfs_fop_write_iter+0x108/0x1d0 vfs_write+0x2f4/0x368 ksys_write+0x7c/0xec __arm64_sys_write+0x20/0x30 el0_svc_common.llvm.7279915941325364641+0xbc/0x1bc do_el0_svc+0x28/0xa0 el0_svc+0x14/0x24 el0_sync_handler+0x88/0xec el0_sync+0x1c0/0x200 While at it, fix the possible NULL pointer dereference in other functions as well: of_thermal_get_temp(), of_thermal_set_emul_temp(), of_thermal_get_trend().

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2024-04-10
Updated 2026-06-15
Modified 2026-06-08
Fix URL N/A

Affected Packages

Software From version Fixed in
linux 5.4.0-128.144
linux-allwinner-5.19
linux-aws 5.4.0-1086.93
linux-aws-5.0
linux-aws-5.11
linux-aws-5.13
linux-aws-5.19
linux-aws-5.3
linux-aws-5.4 5.4.0-1086.93~18.04.1
linux-aws-5.8
linux-aws-6.2
linux-aws-fips
linux-aws-hwe
linux-azure 5.4.0-1094.100
linux-azure-4.15
linux-azure-5.11
linux-azure-5.13
linux-azure-5.19
linux-azure-5.3
linux-azure-5.4 5.4.0-1094.100~18.04.1
linux-azure-5.8
linux-azure-6.2
linux-azure-edge
linux-azure-fde
linux-azure-fde-5.15
linux-azure-fde-5.19
linux-azure-fde-6.2
linux-azure-fips
linux-bluefield
linux-fips
linux-gcp 5.4.0-1090.98
linux-gcp-4.15
linux-gcp-5.11
linux-gcp-5.13
linux-gcp-5.19
linux-gcp-5.3
linux-gcp-5.4 5.4.0-1092.101~18.04.1
linux-gcp-5.8
linux-gcp-6.2
linux-gcp-fips
linux-gke
linux-gke-4.15
linux-gke-5.15
linux-gke-5.4
linux-gkeop 5.4.0-1054.57
linux-gkeop-5.4
linux-hwe
linux-hwe-5.11
linux-hwe-5.13
linux-hwe-5.19
linux-hwe-5.4 5.4.0-128.144~18.04.1
linux-hwe-5.8
linux-hwe-6.2
linux-hwe-edge
linux-ibm 5.4.0-1034.38
linux-ibm-5.4 5.4.0-1034.38~18.04.1
linux-intel-5.13
linux-intel-iot-realtime
linux-iot 5.4.0-1005.7
linux-kvm 5.4.0-1076.81
linux-lowlatency-hwe-5.19
linux-lowlatency-hwe-6.2
linux-lts-xenial
linux-nvidia
linux-nvidia-6.2
linux-oem
linux-oem-5.10
linux-oem-5.13
linux-oem-5.14
linux-oem-5.17
linux-oem-5.6
linux-oem-6.0
linux-oem-6.1
linux-oracle 5.4.0-1084.92
linux-oracle-5.0
linux-oracle-5.11
linux-oracle-5.13
linux-oracle-5.3
linux-oracle-5.4 5.4.0-1084.92~18.04.1
linux-oracle-5.8
linux-raspi 5.4.0-1071.81
linux-raspi-5.4 5.4.0-1071.81~18.04.1
linux-raspi-realtime
linux-raspi2
linux-realtime
linux-riscv
linux-riscv-5.11
linux-riscv-5.19
linux-riscv-5.8
linux-starfive-5.19
linux-starfive-6.2

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