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CVE-2025-38135— serial: Fix potential null-ptr-deref in mlb_usio_probe()

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mlb_usio驱动未检查ioremap返回值，可能导致空指针取消引用。

AI Predicted 5.5 Difficulty: Easy EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux ba44dc04300441b47618f9933bf36e75a280e5fe< a05ebe384c7ca75476453f3070c67d9cf1d1a89f affected
ba44dc04300441b47618f9933bf36e75a280e5fe< 81159a6b064142b993f2f39828b77e199c77872a affected
ba44dc04300441b47618f9933bf36e75a280e5fe< 19fd9f5a69363d33079097d866eb6082d61bf31d affected
ba44dc04300441b47618f9933bf36e75a280e5fe< 548b0e81b9a0902a8bc8259430ed965663baadfc affected
ba44dc04300441b47618f9933bf36e75a280e5fe< a6c7c365734cd0fa1c5aa225a6294fdf80cad2ea affected
ba44dc04300441b47618f9933bf36e75a280e5fe< c23d87b43f7dba5eb12820f6cf21a1cd4f63eb3d affected
ba44dc04300441b47618f9933bf36e75a280e5fe< e1b144aebe6fb898d96ced8c990d7aa38fda4a7a affected
ba44dc04300441b47618f9933bf36e75a280e5fe< 86bcae88c9209e334b2f8c252f4cc66beb261886 affected
… +10 more rows
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I. Basic Information for CVE-2025-38135

Vulnerability Information
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Vulnerability Title
serial: Fix potential null-ptr-deref in mlb_usio_probe()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: serial: Fix potential null-ptr-deref in mlb_usio_probe() devm_ioremap() can return NULL on error. Currently, mlb_usio_probe() does not check for this case, which could result in a NULL pointer dereference. Add NULL check after devm_ioremap() to prevent this issue.
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mlb_usio驱动未检查ioremap返回值，可能导致空指针取消引用。
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 ba44dc04300441b47618f9933bf36e75a280e5fe ~ a05ebe384c7ca75476453f3070c67d9cf1d1a89f -
Linux Linux 5.2 -

II. Public POCs for CVE-2025-38135

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III. Intelligence Information for CVE-2025-38135

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Patches & Fixes for CVE-2025-38135 (1)

Same Patch Batch · Linux · 2025-07-03 · 78 CVEs total

CVE-2025-38139 9.8 CRITICAL netfs: Fix oops in write-retry from mis-resetting the subreq iterator
CVE-2025-38123 9.8 CRITICAL net: wwan: t7xx: Fix napi rx poll issue
CVE-2025-38146 9.4 CRITICAL net: openvswitch: Fix the dead loop of MPLS parse
CVE-2025-38120 9.4 CRITICAL netfilter: nf_set_pipapo_avx2: fix initial map fill
CVE-2025-38111 7.8 HIGH net/mdiobus: Fix potential out-of-bounds read/write access
CVE-2025-38116 7.8 HIGH wifi: ath12k: fix uaf in ath12k_core_init()
CVE-2025-38108 7.8 HIGH net_sched: red: fix a race in __red_change()
CVE-2025-38102 7.8 HIGH VMCI: fix race between vmci_host_setup_notify and vmci_ctx_unset_notify
CVE-2025-38101 7.8 HIGH ring-buffer: Fix buffer locking in ring_buffer_subbuf_order_set()
CVE-2025-38098 7.8 HIGH drm/amd/display: Don't treat wb connector as physical in create_validate_stream_for_sink
CVE-2025-38097 7.8 HIGH espintcp: remove encap socket caching to avoid reference leak
CVE-2025-38095 7.8 HIGH dma-buf: insert memory barrier before updating num_fences
CVE-2025-38106 7.8 HIGH io_uring: fix use-after-free of sq->thread in __io_uring_show_fdinfo()
CVE-2025-38115 7.8 HIGH net_sched: sch_sfq: fix a potential crash on gso_skb handling
CVE-2025-38117 7.8 HIGH Bluetooth: MGMT: Protect mgmt_pending list with its own lock
CVE-2025-38118 7.8 HIGH Bluetooth: MGMT: Fix UAF on mgmt_remove_adv_monitor_complete
CVE-2025-38127 7.8 HIGH ice: fix Tx scheduler error handling in XDP callback
CVE-2025-38129 7.8 HIGH page_pool: Fix use-after-free in page_pool_recycle_in_ring
CVE-2025-38133 7.8 HIGH iio: adc: ad4851: fix ad4858 chan pointer handling
CVE-2025-38141 7.8 HIGH dm: fix dm_blk_report_zones

Showing top 20 of 78 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38135

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