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CVE-2021-47054— bus: qcom: Put child node before return

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于存在潜在的引用计数泄漏。

AI Predicted 5.5 Difficulty: Trivial EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1135 · Network Share Discovery

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 335a127548081322bd2b294d715418648912f20c< a6191e91c10e50bd51db65a00e03d02b6b0cf8c4 affected
335a127548081322bd2b294d715418648912f20c< 94810fc52925eb122a922df7f9966cf3f4ba7391 affected
335a127548081322bd2b294d715418648912f20c< a399dd80e697a02cfb23e2fc09b87849994043d9 affected
335a127548081322bd2b294d715418648912f20c< 3a76ec28824c01b57aa1f0927841d75e4f167cb8 affected
335a127548081322bd2b294d715418648912f20c< 00f6abd3509b1d70d0ab0fbe65ce5685cebed8be affected
335a127548081322bd2b294d715418648912f20c< 6b68c03dfc79cd95a58dfd03f91f6e82829a1b0c affected
335a127548081322bd2b294d715418648912f20c< c6f8e0dc8da1cd78d640dee392071cc2326ec1b2 affected
335a127548081322bd2b294d715418648912f20c< ac6ad7c2a862d682bb584a4bc904d89fa7721af8 affected
… +10 more rows
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I. Basic Information for CVE-2021-47054

Vulnerability Information
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Vulnerability Title
bus: qcom: Put child node before return
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bus: qcom: Put child node before return Put child node before return to fix potential reference count leak. Generally, the reference count of child is incremented and decremented automatically in the macro for_each_available_child_of_node() and should be decremented manually if the loop is broken in loop body.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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，该漏洞源于存在潜在的引用计数泄漏。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 335a127548081322bd2b294d715418648912f20c ~ a6191e91c10e50bd51db65a00e03d02b6b0cf8c4 -
Linux Linux 4.9 -

II. Public POCs for CVE-2021-47054

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III. Intelligence Information for CVE-2021-47054

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Other References for CVE-2021-47054 (8)

Same Patch Batch · Linux · 2024-02-29 · 53 CVEs total

CVE-2023-52480 9.8 CRITICAL ksmbd: fix race condition between session lookup and expire
CVE-2023-52478 8.8 HIGH HID: logitech-hidpp: Fix kernel crash on receiver USB disconnect
CVE-2023-52479 8.8 HIGH ksmbd: fix uaf in smb20_oplock_break_ack
CVE-2024-26620 8.2 HIGH s390/vfio-ap: always filter entire AP matrix
CVE-2021-47068 7.8 HIGH net/nfc: fix use-after-free llcp_sock_bind/connect
CVE-2023-52491 7.8 HIGH media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_
CVE-2024-26608 7.8 HIGH ksmbd: fix global oob in ksmbd_nl_policy
CVE-2023-52486 7.8 HIGH drm: Don't unref the same fb many times by mistake due to deadlock handling
CVE-2024-26610 7.8 HIGH wifi: iwlwifi: fix a memory corruption
CVE-2024-26614 7.8 HIGH tcp: make sure init the accept_queue's spinlocks once
CVE-2024-26617 7.8 HIGH fs/proc/task_mmu: move mmu notification mechanism inside mm lock
CVE-2023-52483 7.8 HIGH mctp: perform route lookups under a RCU read-side lock
CVE-2021-47060 7.8 HIGH KVM: Stop looking for coalesced MMIO zones if the bus is destroyed
CVE-2021-47061 7.8 HIGH KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU
CVE-2024-26611 7.5 HIGH xsk: fix usage of multi-buffer BPF helpers for ZC XDP
CVE-2021-47066 7.1 HIGH async_xor: increase src_offs when dropping destination page
CVE-2023-52497 7.1 HIGH erofs: fix lz4 inplace decompression
CVE-2021-47055 7.1 HIGH mtd: require write permissions for locking and badblock ioctls
CVE-2021-47058 regmap: set debugfs_name to NULL after it is freed
CVE-2023-52477 usb: hub: Guard against accesses to uninitialized BOS descriptors

Showing top 20 of 53 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47054

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