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CVE-2022-50886— mmc: toshsd: 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 4.4 Difficulty: Easy EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1499.003 · Application Exhaustion Flood

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux a5eb8bbd66ccf9f169419f9652544aec771b7c57< 34ae492f8d172f0bd193c24cad588b35419ea47a affected
a5eb8bbd66ccf9f169419f9652544aec771b7c57< 3329e7b7132ca727263fb0ee214cf52cc6dcaaad affected
a5eb8bbd66ccf9f169419f9652544aec771b7c57< 4f6cb1c685f9e20a4a9fa565e442f5af4dad70ff affected
a5eb8bbd66ccf9f169419f9652544aec771b7c57< 3dbb69a0242c31ea4c9eee22b1c41b515fe509a0 affected
a5eb8bbd66ccf9f169419f9652544aec771b7c57< aabbedcb6c9a72d12d35dc672e83f0c8064d8a61 affected
a5eb8bbd66ccf9f169419f9652544aec771b7c57< 6444079767b68b1fbed0e7668081146e80dcb719 affected
a5eb8bbd66ccf9f169419f9652544aec771b7c57< 647e370dd0ef7e212d8d014bda748e461eab2e8c affected
a5eb8bbd66ccf9f169419f9652544aec771b7c57< bfd77b194c94aefbde4efc30ddf8607dd9244672 affected
… +12 more rows
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I. Basic Information for CVE-2022-50886

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
mmc: toshsd: 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: toshsd: 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, free_irq() also needs 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 a5eb8bbd66ccf9f169419f9652544aec771b7c57 ~ 34ae492f8d172f0bd193c24cad588b35419ea47a -
Linux Linux 3.19 -

II. Public POCs for CVE-2022-50886

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III. Intelligence Information for CVE-2022-50886

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Other References for CVE-2022-50886 (9)

Same Patch Batch · Linux · 2025-12-30 · 244 CVEs total

CVE-2023-54184 9.8 CRITICAL scsi: target: iscsit: Free cmds before session free
CVE-2023-54223 9.8 CRITICAL net/mlx5e: xsk: Fix invalid buffer access for legacy rq
CVE-2023-54237 9.8 CRITICAL net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()
CVE-2023-54257 9.8 CRITICAL net: macb: fix a memory corruption in extended buffer descriptor mode
CVE-2023-54258 9.8 CRITICAL cifs: fix potential oops in cifs_oplock_break
CVE-2023-54269 9.8 CRITICAL SUNRPC: double free xprt_ctxt while still in use
CVE-2023-54280 9.8 CRITICAL cifs: fix potential race when tree connecting ipc
CVE-2023-54292 9.8 CRITICAL RDMA/irdma: Fix data race on CQP request done
CVE-2023-54203 9.1 CRITICAL ksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr
CVE-2022-50880 8.8 HIGH wifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()
CVE-2023-54262 8.8 HIGH net/mlx5e: Don't clone flow post action attributes second time
CVE-2023-54214 8.8 HIGH Bluetooth: L2CAP: Fix potential user-after-free
CVE-2023-54162 8.8 HIGH ksmbd: fix possible memory leak in smb2_lock()
CVE-2023-54318 8.8 HIGH net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add
CVE-2023-54250 8.2 HIGH ksmbd: avoid out of bounds access in decode_preauth_ctxt()
CVE-2023-54164 8.0 HIGH Bluetooth: ISO: fix iso_conn related locking and validity issues
CVE-2023-54206 7.8 HIGH net/sched: flower: fix filter idr initialization
CVE-2023-54202 7.8 HIGH drm/i915: fix race condition UAF in i915_perf_add_config_ioctl
CVE-2023-54210 7.8 HIGH Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()
CVE-2023-54243 7.8 HIGH netfilter: ebtables: fix table blob use-after-free

Showing top 20 of 244 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50886

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