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CVE-2025-21783— gpiolib: Fix crash on error in gpiochip_get_ngpios()

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gpiochip_get_ngpios函数未正确处理gpiodev，可能导致空指针取消引用。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 55b2395e4e92adc492c6b30ac109eb78250dcd9d< 4d9b2b62e1136d10f661ec4c0c268140b6f74f4f affected
55b2395e4e92adc492c6b30ac109eb78250dcd9d< a7052afa9eae2239e25943baa8817a6a56e8aa68 affected
55b2395e4e92adc492c6b30ac109eb78250dcd9d< 189fb76215e479c10731baabb50f1a352d2078f5 affected
55b2395e4e92adc492c6b30ac109eb78250dcd9d< 7b4aebeecbbd5b5fe73e35fad3f62ed21aa7ef44 affected
6.6 affected
< 6.6 unaffected
6.6.79≤ 6.6.* unaffected
6.12.16≤ 6.12.* unaffected
… +2 more rows
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I. Basic Information for CVE-2025-21783

Vulnerability Information
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Vulnerability Title
gpiolib: Fix crash on error in gpiochip_get_ngpios()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: gpiolib: Fix crash on error in gpiochip_get_ngpios() The gpiochip_get_ngpios() uses chip_*() macros to print messages. However these macros rely on gpiodev to be initialised and set, which is not the case when called via bgpio_init(). In such a case the printing messages will crash on NULL pointer dereference. Replace chip_*() macros by the respective dev_*() ones to avoid such crash.
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gpiochip_get_ngpios函数未正确处理gpiodev，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 55b2395e4e92adc492c6b30ac109eb78250dcd9d ~ 4d9b2b62e1136d10f661ec4c0c268140b6f74f4f -
Linux Linux 6.6 -

II. Public POCs for CVE-2025-21783

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III. Intelligence Information for CVE-2025-21783

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Patches & Fixes for CVE-2025-21783 (4)

Same Patch Batch · Linux · 2025-02-27 · 177 CVEs total

CVE-2025-21805 9.8 CRITICAL RDMA/rtrs: Add missing deinit() call
CVE-2025-21796 9.8 CRITICAL nfsd: clear acl_access/acl_default after releasing them
CVE-2025-21707 9.8 CRITICAL mptcp: consolidate suboption status
CVE-2025-21748 9.8 CRITICAL ksmbd: fix integer overflows on 32 bit systems
CVE-2024-58006 9.6 CRITICAL PCI: dwc: ep: Prevent changing BAR size/flags in pci_epc_set_bar()
CVE-2024-57999 8.8 HIGH powerpc/pseries/iommu: IOMMU incorrectly marks MMIO range in DDW
CVE-2025-21735 8.8 HIGH NFC: nci: Add bounds checking in nci_hci_create_pipe()
CVE-2024-57997 8.8 HIGH wifi: wcn36xx: fix channel survey memory allocation size
CVE-2024-57995 8.8 HIGH wifi: ath12k: fix read pointer after free in ath12k_mac_assign_vif_to_vdev()
CVE-2025-21710 8.2 HIGH tcp: correct handling of extreme memory squeeze
CVE-2025-21766 8.1 HIGH ipv4: use RCU protection in __ip_rt_update_pmtu()
CVE-2024-57973 8.1 HIGH rdma/cxgb4: Prevent potential integer overflow on 32bit
CVE-2025-21762 8.1 HIGH arp: use RCU protection in arp_xmit()
CVE-2025-21765 8.1 HIGH ipv6: use RCU protection in ip6_default_advmss()
CVE-2025-21760 8.1 HIGH ndisc: extend RCU protection in ndisc_send_skb()
CVE-2024-58013 7.8 HIGH Bluetooth: MGMT: Fix slab-use-after-free Read in mgmt_remove_adv_monitor_sync
CVE-2025-21763 7.8 HIGH neighbour: use RCU protection in __neigh_notify()
CVE-2024-58010 7.8 HIGH binfmt_flat: Fix integer overflow bug on 32 bit systems
CVE-2025-21764 7.8 HIGH ndisc: use RCU protection in ndisc_alloc_skb()
CVE-2025-21792 7.8 HIGH ax25: Fix refcount leak caused by setting SO_BINDTODEVICE sockopt

Showing top 20 of 177 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-21783

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