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CVE-2022-50769— mmc: mxcmmc: 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: Easy EPSS 0.28% · P19

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux d96be879ff469759af6d7fcebdb66237c18da6f8< 5f35c038c9f4d258b3cf77885a2730f1417d63e7 affected
d96be879ff469759af6d7fcebdb66237c18da6f8< 1cf0c1e58738b97e2de207846105b6a5d46622ee affected
d96be879ff469759af6d7fcebdb66237c18da6f8< b8bdb3fd13d5cd1e86d22fd3f803a742fd88af89 affected
d96be879ff469759af6d7fcebdb66237c18da6f8< 32eb502c972dfc34413c9147418b3d94d870c2b8 affected
d96be879ff469759af6d7fcebdb66237c18da6f8< 3904eb97bb78fdca3e16d30a38ce5697b9686110 affected
d96be879ff469759af6d7fcebdb66237c18da6f8< 2d496050ded83b13b16f05e1fc0329b0210d2493 affected
d96be879ff469759af6d7fcebdb66237c18da6f8< d37474ab9a79149075f0823315c6d45dd983a78c affected
d96be879ff469759af6d7fcebdb66237c18da6f8< d2ead18bc7cc166220cab5a744a05c5b69431a12 affected
… +12 more rows
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I. Basic Information for CVE-2022-50769

Vulnerability Information
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Vulnerability Title
mmc: mxcmmc: 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: mxcmmc: 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().
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 d96be879ff469759af6d7fcebdb66237c18da6f8 ~ 5f35c038c9f4d258b3cf77885a2730f1417d63e7 -
Linux Linux 2.6.29 -

II. Public POCs for CVE-2022-50769

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III. Intelligence Information for CVE-2022-50769

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Other References for CVE-2022-50769 (4)

Same Patch Batch · Linux · 2025-12-24 · 322 CVEs total

CVE-2025-68741 9.8 CRITICAL scsi: qla2xxx: Fix improper freeing of purex item
CVE-2023-53867 9.8 CRITICAL ceph: fix potential use-after-free bug when trimming caps
CVE-2025-68726 9.8 CRITICAL crypto: aead - Fix reqsize handling
CVE-2025-68745 9.8 CRITICAL scsi: qla2xxx: Clear cmds after chip reset
CVE-2023-54094 9.8 CRITICAL net: prevent skb corruption on frag list segmentation
CVE-2023-54090 9.8 CRITICAL ixgbe: Fix panic during XDP_TX with > 64 CPUs
CVE-2023-54076 9.8 CRITICAL smb: client: fix missed ses refcounting
CVE-2022-50717 9.8 CRITICAL nvmet-tcp: add bounds check on Transfer Tag
CVE-2025-68359 9.8 CRITICAL btrfs: fix double free of qgroup record after failure to add delayed ref head
CVE-2023-53996 9.3 CRITICAL x86/sev: Make enc_dec_hypercall() accept a size instead of npages
CVE-2023-54071 8.8 HIGH wifi: rtw88: use work to update rate to avoid RCU warning
CVE-2023-54120 8.8 HIGH Bluetooth: Fix race condition in hidp_session_thread
CVE-2023-54043 8.8 HIGH iommufd: Do not add the same hwpt to the ioas->hwpt_list twice
CVE-2022-50732 8.8 HIGH staging: rtl8192u: Fix use after free in ieee80211_rx()
CVE-2023-54092 8.8 HIGH KVM: s390: pv: fix index value of replaced ASCE
CVE-2023-54060 8.8 HIGH iommufd: Set end correctly when doing batch carry
CVE-2025-68736 8.8 HIGH landlock: Fix handling of disconnected directories
CVE-2023-54040 8.8 HIGH ice: fix wrong fallback logic for FDIR
CVE-2023-53986 8.6 HIGH mips: bmips: BCM6358: disable RAC flush for TP1
CVE-2022-50746 8.4 HIGH erofs: validate the extent length for uncompressed pclusters

Showing top 20 of 322 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50769

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