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CVE-2022-50140— memstick/ms_block: Fix a memory leak

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msb_data_clear未释放擦除块位图，可能导致内存泄漏。

AI Predicted 5.5 Difficulty: Trivial EPSS 0.19% · P9

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< efd675246aec045507b9425c67b548cc2d782d8f affected
0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< 37958980eb4cd71ae594ace093c11b6a91e165e8 affected
0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< 9d8b911fe3c3ed788c66edba7c90e32a4a7a5f53 affected
0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< 9260a154b3b5e387dbceec7c0ac441470646bc6f affected
0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< 961d7d12080fe70847f944d656e36cd0dd0214ba affected
0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< 16e07966638717416abf45393d6a80a5a1034429 affected
0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< 39be95d1ff7b44c1e969af72ba9da7332dfcc1da affected
0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< 54eb7a55be6779c4d0c25eaf5056498a28595049 affected
… +10 more rows
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I. Basic Information for CVE-2022-50140

Vulnerability Information
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Vulnerability Title
memstick/ms_block: Fix a memory leak
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: memstick/ms_block: Fix a memory leak 'erased_blocks_bitmap' is never freed. As it is allocated at the same time as 'used_blocks_bitmap', it is likely that it should be freed also at the same time. Add the corresponding bitmap_free() in msb_data_clear().
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msb_data_clear未释放擦除块位图，可能导致内存泄漏。
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 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 ~ efd675246aec045507b9425c67b548cc2d782d8f -
Linux Linux 3.12 -

II. Public POCs for CVE-2022-50140

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III. Intelligence Information for CVE-2022-50140

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Same Patch Batch · Linux · 2025-06-18 · 362 CVEs total

CVE-2025-38075 9.8 CRITICAL scsi: target: iscsi: Fix timeout on deleted connection
CVE-2022-50098 8.8 HIGH scsi: qla2xxx: Fix crash due to stale SRB access around I/O timeouts
CVE-2025-38052 8.8 HIGH net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done
CVE-2022-49934 8.8 HIGH wifi: mac80211: Fix UAF in ieee80211_scan_rx()
CVE-2022-50164 8.8 HIGH wifi: iwlwifi: mvm: fix double list_add at iwl_mvm_mac_wake_tx_queue
CVE-2025-38016 8.8 HIGH HID: bpf: abort dispatch if device destroyed
CVE-2025-38074 8.8 HIGH vhost-scsi: protect vq->log_used with vq->mutex
CVE-2022-49974 8.8 HIGH HID: nintendo: fix rumble worker null pointer deref
CVE-2022-49968 8.0 HIGH ieee802154/adf7242: defer destroy_workqueue call
CVE-2022-49944 7.8 HIGH Revert "usb: typec: ucsi: add a common function ucsi_unregister_connectors()"
CVE-2022-49950 7.8 HIGH misc: fastrpc: fix memory corruption on open
CVE-2022-49939 7.8 HIGH binder: fix UAF of ref->proc caused by race condition
CVE-2022-50028 7.8 HIGH gadgetfs: ep_io - wait until IRQ finishes
CVE-2022-49935 7.8 HIGH dma-buf/dma-resv: check if the new fence is really later
CVE-2025-38082 7.8 HIGH gpio: virtuser: fix potential out-of-bound write
CVE-2022-50182 7.8 HIGH media: imx-jpeg: Align upwards buffer size
CVE-2025-38080 7.8 HIGH drm/amd/display: Increase block_sequence array size
CVE-2025-38060 7.8 HIGH bpf: copy_verifier_state() should copy 'loop_entry' field
CVE-2022-50101 7.8 HIGH video: fbdev: vt8623fb: Check the size of screen before memset_io()
CVE-2025-38062 7.8 HIGH genirq/msi: Store the IOMMU IOVA directly in msi_desc instead of iommu_cookie

Showing top 20 of 362 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50140

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