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CVE-2021-47075— nvmet: fix memory leak in nvmet_alloc_ctrl()

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，该漏洞源于存在内存泄漏问题。

AI Predicted 3.3 Difficulty: Moderate EPSS 0.91% · P59

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 94a39d61f80fcd679debda11e1ca02b88d90e67e< 4720f29acb3fe67aa8aa71e6b675b079d193aaeb affected
94a39d61f80fcd679debda11e1ca02b88d90e67e< afb680ed7ecbb7fd66ddb43650e9b533fd8b4b9a affected
94a39d61f80fcd679debda11e1ca02b88d90e67e< fec356a61aa3d3a66416b4321f1279e09e0f256f affected
5.7 affected
< 5.7 unaffected
5.10.40≤ 5.10.* unaffected
5.12.7≤ 5.12.* unaffected
5.13≤ * unaffected
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I. Basic Information for CVE-2021-47075

Vulnerability Information
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Vulnerability Title
nvmet: fix memory leak in nvmet_alloc_ctrl()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nvmet: fix memory leak in nvmet_alloc_ctrl() When creating ctrl in nvmet_alloc_ctrl(), if the cntlid_min is larger than cntlid_max of the subsystem, and jumps to the "out_free_changed_ns_list" label, but the ctrl->sqs lack of be freed. Fix this by jumping to the "out_free_sqs" label.
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，该漏洞源于存在内存泄漏问题。
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 94a39d61f80fcd679debda11e1ca02b88d90e67e ~ 4720f29acb3fe67aa8aa71e6b675b079d193aaeb -
Linux Linux 5.7 -

II. Public POCs for CVE-2021-47075

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III. Intelligence Information for CVE-2021-47075

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Other References for CVE-2021-47075 (3)

Same Patch Batch · Linux · 2024-03-01 · 13 CVEs total

CVE-2021-47081 7.8 HIGH habanalabs/gaudi: Fix a potential use after free in gaudi_memset_device_memory
CVE-2021-47078 7.8 HIGH RDMA/rxe: Clear all QP fields if creation failed
CVE-2021-47069 7.8 HIGH ipc/mqueue, msg, sem: avoid relying on a stack reference past its expiry
CVE-2021-47080 RDMA/core: Prevent divide-by-zero error triggered by the user
CVE-2021-47079 platform/x86: ideapad-laptop: fix a NULL pointer dereference
CVE-2021-47077 scsi: qedf: Add pointer checks in qedf_update_link_speed()
CVE-2021-47076 RDMA/rxe: Return CQE error if invalid lkey was supplied
CVE-2021-47074 nvme-loop: fix memory leak in nvme_loop_create_ctrl()
CVE-2021-47072 btrfs: fix removed dentries still existing after log is synced
CVE-2021-47073 platform/x86: dell-smbios-wmi: Fix oops on rmmod dell_smbios
CVE-2021-47071 uio_hv_generic: Fix a memory leak in error handling paths
CVE-2021-47070 uio_hv_generic: Fix another memory leak in error handling paths

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47075

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