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CVE-2022-50251— mmc: vub300: fix return value check of mmc_add_host()

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，该漏洞源于未检查mmc_add_host返回值，可能导致内存泄漏和内核崩溃。

AI Predicted 7.8 Difficulty: Easy EPSS 0.16% · P5

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 88095e7b473a3d9ec3b9c60429576e9cbd327c89< 41ed46bdbd2878cd6567abe0974a445f8b1b8ec8 affected
88095e7b473a3d9ec3b9c60429576e9cbd327c89< 25f05d762ca5e1c685002a53dd44f68e78ca3feb affected
88095e7b473a3d9ec3b9c60429576e9cbd327c89< a46e681151bbdacdf6b89ee8c4e5bad0555142bb affected
88095e7b473a3d9ec3b9c60429576e9cbd327c89< 3b29f8769d32016b2d89183db4d80c7a71b7e35e affected
88095e7b473a3d9ec3b9c60429576e9cbd327c89< 3049a3b927a40d89d4582ff1033cd7953be773c7 affected
88095e7b473a3d9ec3b9c60429576e9cbd327c89< afc898019e7bf18c5eb7a0ac19852fcb1b341b3c affected
88095e7b473a3d9ec3b9c60429576e9cbd327c89< c9e85979b59cb86f0a15defa8199d740e2b36b90 affected
88095e7b473a3d9ec3b9c60429576e9cbd327c89< 2044b2ea77945f372ef161d1bbf814e471767ff2 affected
… +12 more rows
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I. Basic Information for CVE-2022-50251

Vulnerability Information
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Vulnerability Title
mmc: vub300: fix return value check of mmc_add_host()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mmc: vub300: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, the memory that allocated in mmc_alloc_host() will be leaked and it will lead a kernel crash because of deleting not added device in the remove path. So fix this by checking the return value and goto error path which will call mmc_free_host(), besides, the timer added before mmc_add_host() needs be del. And this patch fixes another missing call mmc_free_host() if usb_control_msg() fails.
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，该漏洞源于未检查mmc_add_host返回值，可能导致内存泄漏和内核崩溃。
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 88095e7b473a3d9ec3b9c60429576e9cbd327c89 ~ 41ed46bdbd2878cd6567abe0974a445f8b1b8ec8 -
Linux Linux 3.0 -

II. Public POCs for CVE-2022-50251

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III. Intelligence Information for CVE-2022-50251

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Patches & Fixes for CVE-2022-50251 (1)

Same Patch Batch · Linux · 2025-09-15 · 210 CVEs total

CVE-2022-50235 9.8 CRITICAL NFSD: Protect against send buffer overflow in NFSv2 READDIR
CVE-2022-50335 9.8 CRITICAL 9p: set req refcount to zero to avoid uninitialized usage
CVE-2023-53192 9.8 CRITICAL vxlan: Fix nexthop hash size
CVE-2023-53253 8.8 HIGH HID: nvidia-shield: Reference hid_device devm allocation of input_dev name
CVE-2023-53226 8.8 HIGH wifi: mwifiex: Fix OOB and integer underflow when rx packets
CVE-2022-50241 8.8 HIGH NFSD: fix use-after-free on source server when doing inter-server copy
CVE-2023-53194 8.4 HIGH fs/ntfs3: Add length check in indx_get_root
CVE-2023-53213 8.1 HIGH wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies()
CVE-2023-53186 8.1 HIGH skbuff: Fix a race between coalescing and releasing SKBs
CVE-2022-50303 7.8 HIGH drm/amdkfd: Fix double release compute pasid
CVE-2023-53254 7.8 HIGH cacheinfo: Fix shared_cpu_map to handle shared caches at different levels
CVE-2023-53170 7.8 HIGH net: dsa: Removed unneeded of_node_put in felix_parse_ports_node
CVE-2023-53252 7.8 HIGH Bluetooth: use RCU for hci_conn_params and iterate safely in hci_sync
CVE-2023-53176 7.8 HIGH serial: 8250: Reinit port->pm on port specific driver unbind
CVE-2023-53178 7.8 HIGH mm: fix zswap writeback race condition
CVE-2023-53179 7.8 HIGH netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c
CVE-2023-53184 7.8 HIGH arm64/sme: Set new vector length before reallocating
CVE-2022-50315 7.8 HIGH ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS
CVE-2023-53189 7.8 HIGH ipv6/addrconf: fix a potential refcount underflow for idev
CVE-2023-53216 7.8 HIGH arm64: efi: Make efi_rt_lock a raw_spinlock

Showing top 20 of 210 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50251

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