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CVE-2021-47202— thermal: Fix NULL pointer dereferences in of_thermal_ functions

EPSS 0.02% · P4
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I. Basic Information for CVE-2021-47202

Vulnerability Information
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Vulnerability Title
thermal: Fix NULL pointer dereferences in of_thermal_ functions
Source: NVD (National Vulnerability Database)
Vulnerability 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().
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于of_thermal函数存在空指针取消引用漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 2251aef64a38db60f4ae7a4a83f9203c6791f196 ~ 828f4c31684da94ecf0b44a2cbd35bbede04f0bd -
LinuxLinux 3.19 -

II. Public POCs for CVE-2021-47202

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III. Intelligence Information for CVE-2021-47202

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Same Patch Batch · Linux · 2024-04-10 · 39 CVEs total

CVE-2021-47210usb: typec: tipd: Remove WARN_ON in tps6598x_block_read
CVE-2021-47199net/mlx5e: CT, Fix multiple allocations and memleak of mod acts
CVE-2021-47200drm/prime: Fix use after free in mmap with drm_gem_ttm_mmap
CVE-2021-47201iavf: free q_vectors before queues in iavf_disable_vf
CVE-2021-47203scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()
CVE-2021-47204net: dpaa2-eth: fix use-after-free in dpaa2_eth_remove
CVE-2021-47205clk: sunxi-ng: Unregister clocks/resets when unbinding
CVE-2021-47206usb: host: ohci-tmio: check return value after calling platform_get_resource()
CVE-2021-47207ALSA: gus: fix null pointer dereference on pointer block
CVE-2021-47209sched/fair: Prevent dead task groups from regaining cfs_rq's
CVE-2021-47198scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine
CVE-2021-47211ALSA: usb-audio: fix null pointer dereference on pointer cs_desc
CVE-2021-47212net/mlx5: Update error handler for UCTX and UMEM
CVE-2021-47214hugetlb, userfaultfd: fix reservation restore on userfaultfd error
CVE-2021-47215net/mlx5e: kTLS, Fix crash in RX resync flow
CVE-2021-47216scsi: advansys: Fix kernel pointer leak
CVE-2021-47217x86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if Hyper-V setup fails
CVE-2021-47218selinux: fix NULL-pointer dereference when hashtab allocation fails
CVE-2021-47219scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs()
CVE-2021-47189btrfs: fix memory ordering between normal and ordered work functions

Showing top 20 of 39 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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