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CVE-2022-50347— mmc: rtsx_usb_sdmmc: 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 5.5 Difficulty: Moderate EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux c7f6558d84afe60016b8103c0737df6e376a1c2d< d7ad7278be401b09c9f9a9f522cf4c449c7fd489 affected
c7f6558d84afe60016b8103c0737df6e376a1c2d< e598c9683fe1cf97c2b11b800cc3cee072108220 affected
c7f6558d84afe60016b8103c0737df6e376a1c2d< 89303ddbb502c3bc8edbf864f9f85500c8fe07e9 affected
c7f6558d84afe60016b8103c0737df6e376a1c2d< 937112e991ed25d1727d878734adcbef3b900274 affected
c7f6558d84afe60016b8103c0737df6e376a1c2d< 7fa922c7a3dd623fd59f1af50e8896fd9ca7f654 affected
c7f6558d84afe60016b8103c0737df6e376a1c2d< df683201c7ffbd21a806a7cad657b661c5ebfb6f affected
c7f6558d84afe60016b8103c0737df6e376a1c2d< 1491667d5450778a265eddddd294219acfd648cb affected
c7f6558d84afe60016b8103c0737df6e376a1c2d< a522e26a20a43dcfbef9ee9f71ed803290e852b0 affected
… +12 more rows
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I. Basic Information for CVE-2022-50347

Vulnerability Information
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Vulnerability Title
mmc: rtsx_usb_sdmmc: 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: rtsx_usb_sdmmc: 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 calling mmc_free_host() in the error path, besides, led_classdev_unregister() and pm_runtime_disable() also need be called.
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 c7f6558d84afe60016b8103c0737df6e376a1c2d ~ d7ad7278be401b09c9f9a9f522cf4c449c7fd489 -
Linux Linux 3.16 -

II. Public POCs for CVE-2022-50347

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III. Intelligence Information for CVE-2022-50347

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Same Patch Batch · Linux · 2025-09-16 · 115 CVEs total

CVE-2022-50350 9.8 CRITICAL scsi: target: iscsi: Fix a race condition between login_work and the login thread
CVE-2025-39806 8.8 HIGH HID: multitouch: fix slab out-of-bounds access in mt_report_fixup()
CVE-2023-53305 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free
CVE-2025-39827 8.8 HIGH net: rose: include node references in rose_neigh refcount
CVE-2025-39826 8.8 HIGH net: rose: convert 'use' field to refcount_t
CVE-2023-53297 8.8 HIGH Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp
CVE-2023-53322 8.8 HIGH scsi: qla2xxx: Wait for io return on terminate rport
CVE-2023-53315 8.8 HIGH wifi: ath11k: Fix SKB corruption in REO destination ring
CVE-2025-39809 8.4 HIGH HID: intel-thc-hid: intel-quicki2c: Fix ACPI dsd ICRS/ISUB length
CVE-2023-53333 8.2 HIGH netfilter: conntrack: dccp: copy entire header to stack buffer, not just basic one
CVE-2025-39818 7.8 HIGH HID: intel-thc-hid: intel-thc: Fix incorrect pointer arithmetic in I2C regs save
CVE-2025-39810 7.8 HIGH bnxt_en: Fix memory corruption when FW resources change during ifdown
CVE-2023-53311 7.8 HIGH nilfs2: fix use-after-free of nilfs_root in dirtying inodes via iput
CVE-2022-50341 7.8 HIGH cifs: fix oops during encryption
CVE-2023-53314 7.8 HIGH fbdev/ep93xx-fb: Do not assign to struct fb_info.dev
CVE-2025-39815 7.8 HIGH RISC-V: KVM: fix stack overrun when loading vlenb
CVE-2023-53286 7.8 HIGH RDMA/mlx5: Return the firmware result upon destroying QP/RQ
CVE-2023-53331 7.8 HIGH pstore/ram: Check start of empty przs during init
CVE-2023-53274 7.8 HIGH clk: mediatek: mt8183: Add back SSPM related clocks
CVE-2023-53263 7.8 HIGH drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create

Showing top 20 of 115 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50347

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