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CVE-2025-37905— firmware: arm_scmi: Balance device refcount when destroying devices

EPSS 0.09% · P25
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I. Basic Information for CVE-2025-37905

Vulnerability Information
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Vulnerability Title
firmware: arm_scmi: Balance device refcount when destroying devices
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Balance device refcount when destroying devices Using device_find_child() to lookup the proper SCMI device to destroy causes an unbalance in device refcount, since device_find_child() calls an implicit get_device(): this, in turns, inhibits the call of the provided release methods upon devices destruction. As a consequence, one of the structures that is not freed properly upon destruction is the internal struct device_private dev->p populated by the drivers subsystem core. KMemleak detects this situation since loading/unloding some SCMI driver causes related devices to be created/destroyed without calling any device_release method. unreferenced object 0xffff00000f583800 (size 512): comm "insmod", pid 227, jiffies 4294912190 hex dump (first 32 bytes): 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N.......... ff ff ff ff ff ff ff ff 60 36 1d 8a 00 80 ff ff ........`6...... backtrace (crc 114e2eed): kmemleak_alloc+0xbc/0xd8 __kmalloc_cache_noprof+0x2dc/0x398 device_add+0x954/0x12d0 device_register+0x28/0x40 __scmi_device_create.part.0+0x1bc/0x380 scmi_device_create+0x2d0/0x390 scmi_create_protocol_devices+0x74/0xf8 scmi_device_request_notifier+0x1f8/0x2a8 notifier_call_chain+0x110/0x3b0 blocking_notifier_call_chain+0x70/0xb0 scmi_driver_register+0x350/0x7f0 0xffff80000a3b3038 do_one_initcall+0x12c/0x730 do_init_module+0x1dc/0x640 load_module+0x4b20/0x5b70 init_module_from_file+0xec/0x158 $ ./scripts/faddr2line ./vmlinux device_add+0x954/0x12d0 device_add+0x954/0x12d0: kmalloc_noprof at include/linux/slab.h:901 (inlined by) kzalloc_noprof at include/linux/slab.h:1037 (inlined by) device_private_init at drivers/base/core.c:3510 (inlined by) device_add at drivers/base/core.c:3561 Balance device refcount by issuing a put_device() on devices found via device_find_child().
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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arm_scmi模块未平衡设备引用计数，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

VendorProductAffected VersionsCPESubscribe
LinuxLinux d4f9dddd21f39395c62ea12d3d91239637d4805f ~ 91ff1e9652fb9beb0174267d6bb38243dff211bb -
LinuxLinux 5.13 -

II. Public POCs for CVE-2025-37905

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III. Intelligence Information for CVE-2025-37905

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Same Patch Batch · Linux · 2025-05-20 · 95 CVEs total

CVE-2025-379249.8 CRITICALksmbd: fix use-after-free in kerberos authentication
CVE-2025-37958mm/huge_memory: fix dereferencing invalid pmd migration entry
CVE-2025-37954smb: client: Avoid race in open_cached_dir with lease breaks
CVE-2025-37953sch_htb: make htb_deactivate() idempotent
CVE-2025-37949xenbus: Use kref to track req lifetime
CVE-2025-37948arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs
CVE-2025-37947ksmbd: prevent out-of-bounds stream writes by validating *pos
CVE-2025-37946s390/pci: Fix duplicate pci_dev_put() in disable_slot() when PF has child VFs
CVE-2025-37945net: phy: allow MDIO bus PM ops to start/stop state machine for phylink-controlled PHY
CVE-2025-37950ocfs2: fix panic in failed foilio allocation
CVE-2025-37957KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception
CVE-2025-37956ksmbd: prevent rename with empty string
CVE-2025-37960memblock: Accept allocated memory before use in memblock_double_array()
CVE-2025-37959bpf: Scrub packet on bpf_redirect_peer
CVE-2025-37961ipvs: fix uninit-value for saddr in do_output_route4
CVE-2025-37963arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users
CVE-2025-37962ksmbd: fix memory leak in parse_lease_state()
CVE-2025-37964x86/mm: Eliminate window where TLB flushes may be inadvertently skipped
CVE-2025-37965drm/amd/display: Fix invalid context error in dml helper
CVE-2025-37967usb: typec: ucsi: displayport: Fix deadlock

Showing top 20 of 95 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-37905

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