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CVE-2025-40221— media: pci: mg4b: fix uninitialized iio scan data

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，该漏洞源于未初始化iio扫描数据，可能导致信息泄露。

AI Predicted 5.5 Difficulty: Trivial EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 0ab13674a9bd10514486cf1670d71dbd8afec421< b7f82da7f86479cb6479a76ebe213ece7c77398f affected
0ab13674a9bd10514486cf1670d71dbd8afec421< b792eba44494b4e6ab5006013335f9819f303b8b affected
0ab13674a9bd10514486cf1670d71dbd8afec421< c0d3f6969bb4d72476cfe7ea9263831f1c283704 affected
6.7 affected
< 6.7 unaffected
6.12.54≤ 6.12.* unaffected
6.17.4≤ 6.17.* unaffected
6.18≤ * unaffected
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I. Basic Information for CVE-2025-40221

Vulnerability Information
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Vulnerability Title
media: pci: mg4b: fix uninitialized iio scan data
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: pci: mg4b: fix uninitialized iio scan data Fix potential leak of uninitialized stack data to userspace by ensuring that the `scan` structure is zeroed before use.
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，该漏洞源于未初始化iio扫描数据，可能导致信息泄露。
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 0ab13674a9bd10514486cf1670d71dbd8afec421 ~ b7f82da7f86479cb6479a76ebe213ece7c77398f -
Linux Linux 6.7 -

II. Public POCs for CVE-2025-40221

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III. Intelligence Information for CVE-2025-40221

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Same Patch Batch · Linux · 2025-12-04 · 53 CVEs total

CVE-2025-40261 9.8 CRITICAL nvme: nvme-fc: Ensure ->ioerr_work is cancelled in nvme_fc_delete_ctrl()
CVE-2025-40252 9.8 CRITICAL net: qlogic/qede: fix potential out-of-bounds read in qede_tpa_cont() and qede_tpa_end()
CVE-2025-40258 9.8 CRITICAL mptcp: fix race condition in mptcp_schedule_work()
CVE-2025-40257 9.8 CRITICAL mptcp: fix a race in mptcp_pm_del_add_timer()
CVE-2025-40253 8.8 HIGH s390/ctcm: Fix double-kfree
CVE-2025-40266 8.2 HIGH KVM: arm64: Check the untrusted offset in FF-A memory share
CVE-2025-40244 7.8 HIGH hfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent()
CVE-2025-40251 7.8 HIGH devlink: rate: Unset parent pointer in devl_rate_nodes_destroy
CVE-2025-40262 7.8 HIGH Input: imx_sc_key - fix memory corruption on unload
CVE-2025-40250 7.8 HIGH net/mlx5: Clean up only new IRQ glue on request_irq() failure
CVE-2025-40248 7.8 HIGH vsock: Ignore signal/timeout on connect() if already established
CVE-2025-40249 7.8 HIGH gpio: cdev: make sure the cdev fd is still active before emitting events
CVE-2025-40245 7.8 HIGH nios2: ensure that memblock.current_limit is set when setting pfn limits
CVE-2025-40214 7.8 HIGH af_unix: Initialise scc_index in unix_add_edge().
CVE-2025-40243 7.8 HIGH hfs: fix KMSAN uninit-value issue in hfs_find_set_zero_bits()
CVE-2025-40241 7.8 HIGH erofs: fix crafted invalid cases for encoded extents
CVE-2025-40233 7.8 HIGH ocfs2: clear extent cache after moving/defragmenting extents
CVE-2025-40216 7.8 HIGH io_uring/rsrc: don't rely on user vaddr alignment
CVE-2025-40215 7.8 HIGH xfrm: delete x->tunnel as we delete x
CVE-2025-40240 7.5 HIGH sctp: avoid NULL dereference when chunk data buffer is missing

Showing top 20 of 53 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40221

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