Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2021-47364— comedi: Fix memory leak in compat_insnlist()

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.24% · P15

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 8

VendorProductVersion RangeStatus
LinuxLinuxb8d47d8813055ce38c0d2ad913d5462017e52692< 8d6a21e4cd6a319b0662cbe4ad6199e276ac776aaffected
b8d47d8813055ce38c0d2ad913d5462017e52692< f217b6c1e28ed0b353634ce4d92a155b80bd1671affected
b8d47d8813055ce38c0d2ad913d5462017e52692< bb509a6ffed2c8b0950f637ab5779aa818ed1596affected
5.8affected
< 5.8unaffected
5.10.70≤ 5.10.*unaffected
5.14.9≤ 5.14.*unaffected
5.15≤ *unaffected
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2021-47364

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
comedi: Fix memory leak in compat_insnlist()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: comedi: Fix memory leak in compat_insnlist() `compat_insnlist()` handles the 32-bit version of the `COMEDI_INSNLIST` ioctl (whenwhen `CONFIG_COMPAT` is enabled). It allocates memory to temporarily hold an array of `struct comedi_insn` converted from the 32-bit version in user space. This memory is only being freed if there is a fault while filling the array, otherwise it is leaked. Add a call to `kfree()` to fix the leak.
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compat_insnlist函数中存在内存泄漏。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux b8d47d8813055ce38c0d2ad913d5462017e52692 ~ 8d6a21e4cd6a319b0662cbe4ad6199e276ac776a -
LinuxLinux 5.8 -

II. Public POCs for CVE-2021-47364

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-47364

请登录查看更多情报信息。

Other References for CVE-2021-47364 (3)

Same Patch Batch · Linux · 2024-05-21 · 361 CVEs total

CVE-2021-473289.8 CRITICALscsi: iscsi: Fix conn use after free during resets
CVE-2023-527419.8 CRITICALcifs: Fix use-after-free in rdata->read_into_pages()
CVE-2023-527329.8 CRITICALceph: blocklist the kclient when receiving corrupted snap trace
CVE-2023-527559.8 CRITICALksmbd: fix slab out of bounds write in smb_inherit_dacl()
CVE-2021-472329.8 CRITICALcan: j1939: fix Use-after-Free, hold skb ref while in use
CVE-2021-473789.8 CRITICALnvme-rdma: destroy cm id before destroy qp to avoid use after free
CVE-2021-474279.8 CRITICALscsi: iscsi: Fix iscsi_task use after free
CVE-2023-527768.8 HIGHwifi: ath12k: fix dfs-radar and temperature event locking
CVE-2023-528468.8 HIGHhsr: Prevent use after free in prp_create_tagged_frame()
CVE-2021-473908.8 HIGHKVM: x86: Fix stack-out-of-bounds memory access from ioapic_write_indirect()
CVE-2021-473888.8 HIGHmac80211: fix use-after-free in CCMP/GCMP RX
CVE-2021-473088.8 HIGHscsi: libfc: Fix array index out of bound exception
CVE-2023-528018.8 HIGHiommufd: Fix missing update of domains_itree after splitting iopt_area
CVE-2023-527698.8 HIGHwifi: ath12k: fix htt mlo-offset event locking
CVE-2023-527988.8 HIGHwifi: ath11k: fix dfs radar event locking
CVE-2023-527908.8 HIGHswiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC
CVE-2023-528298.4 HIGHwifi: ath12k: fix possible out-of-bound write in ath12k_wmi_ext_hal_reg_caps()
CVE-2021-472408.4 HIGHnet: qrtr: fix OOB Read in qrtr_endpoint_post
CVE-2021-473528.4 HIGHvirtio-net: Add validation for used length
CVE-2023-527758.2 HIGHnet/smc: avoid data corruption caused by decline

Showing top 20 of 361 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47364

No comments yet

Leave a comment