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CVE-2021-47361— mcb: fix error handling in mcb_alloc_bus()

EPSS 0.02% · P4

Affected Version Matrix 16

VendorProductVersion RangeStatus
LinuxLinux18d28819809909c3f24bb72183a901c5e332a63d< 8a558261fa57a6deefb0925ab1829f698b194aeaaffected
18d28819809909c3f24bb72183a901c5e332a63d< 115b07d9f47e3996430b8f2007edd9768e1f807faffected
18d28819809909c3f24bb72183a901c5e332a63d< 66f74ba9be9daf9c47fface6af3677f602774f6baffected
18d28819809909c3f24bb72183a901c5e332a63d< 7751f609eadf36b1f53712bae430019c53a16eb0affected
18d28819809909c3f24bb72183a901c5e332a63d< 91e4ad05bf18322b5921d1a6c9b603f6eb1694f0affected
18d28819809909c3f24bb72183a901c5e332a63d< 9fc198f415dee070a1de957bb5bf5921d8df3499affected
18d28819809909c3f24bb72183a901c5e332a63d< 25a1433216489de4abc889910f744e952cb6dbaeaffected
4.7affected
… +8 more rows
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I. Basic Information for CVE-2021-47361

Vulnerability Information
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Vulnerability Title
mcb: fix error handling in mcb_alloc_bus()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mcb: fix error handling in mcb_alloc_bus() There are two bugs: 1) If ida_simple_get() fails then this code calls put_device(carrier) but we haven't yet called get_device(carrier) and probably that leads to a use after free. 2) After device_initialize() then we need to use put_device() to release the bus. This will free the internal resources tied to the device and call mcb_free_bus() which will free the rest.
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，该漏洞源于内存释放后重用。
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 18d28819809909c3f24bb72183a901c5e332a63d ~ 8a558261fa57a6deefb0925ab1829f698b194aea -
LinuxLinux 4.7 -

II. Public POCs for CVE-2021-47361

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III. Intelligence Information for CVE-2021-47361

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

CVE-2021-47432lib/generic-radix-tree.c: Don't overflow in peek()
CVE-2023-52760gfs2: Fix slab-use-after-free in gfs2_qd_dealloc
CVE-2023-52757smb: client: fix potential deadlock when releasing mids
CVE-2023-52755ksmbd: fix slab out of bounds write in smb_inherit_dacl()
CVE-2023-52754media: imon: fix access to invalid resource for the second interface
CVE-2023-52753drm/amd/display: Avoid NULL dereference of timing generator
CVE-2023-52752smb: client: fix use-after-free bug in cifs_debug_data_proc_show()
CVE-2023-52751smb: client: fix use-after-free in smb2_query_info_compound()
CVE-2023-52750arm64: Restrict CPU_BIG_ENDIAN to GNU as or LLVM IAS 15.x or newer
CVE-2023-52749spi: Fix null dereference on suspend
CVE-2023-52748f2fs: avoid format-overflow warning
CVE-2022-48710drm/radeon: fix a possible null pointer dereference
CVE-2023-52742net: USB: Fix wrong-direction WARNING in plusb.c
CVE-2023-52738drm/amdgpu/fence: Fix oops due to non-matching drm_sched init/fini
CVE-2023-52740powerpc/64s/interrupt: Fix interrupt exit race with security mitigation switch
CVE-2023-52739Fix page corruption caused by racy check in __free_pages
CVE-2023-52741cifs: Fix use-after-free in rdata->read_into_pages()
CVE-2023-52743ice: Do not use WQ_MEM_RECLAIM flag for workqueue
CVE-2023-52746xfrm/compat: prevent potential spectre v1 gadget in xfrm_xlate32_attr()
CVE-2023-52747IB/hfi1: Restore allocated resources on failed copyout

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-2021-47361

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