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CVE-2026-72214— power: supply: cpcap-battery: Fix missing nvmem_device_put() causing reference 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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于未调用nvmem_device_put()导致引用泄漏，可能导致nvmem设备无法释放。

AI Predicted 4.3 Difficulty: Moderate EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1546.001 · Change Default File Association

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux fd46821e85de90fb5b7356251164af4815b6e3f6< fc65520fe0781a1ff46631f111e07b4a1c677b96 affected
fd46821e85de90fb5b7356251164af4815b6e3f6< 700c225d829a1256b59053c34a1a9d1a6ab70b09 affected
fd46821e85de90fb5b7356251164af4815b6e3f6< deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2 affected
fd46821e85de90fb5b7356251164af4815b6e3f6< a3d81de441233a92ec21469cd0c4eb3c26b95cd8 affected
fd46821e85de90fb5b7356251164af4815b6e3f6< b56a5cbf8f1f1a5740f1137c89b14d0373309d8d affected
fd46821e85de90fb5b7356251164af4815b6e3f6< a2c14ff63e0e02e3c832385e523e9cc81301171c affected
5.18 affected
< 5.18 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-72214

Vulnerability Information
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Vulnerability Title
power: supply: cpcap-battery: Fix missing nvmem_device_put() causing reference leak
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: power: supply: cpcap-battery: Fix missing nvmem_device_put() causing reference leak In cpcap_battery_detect_battery_type(), the reference to an nvmem device obtained via nvmem_device_find() is not released with nvmem_device_put() on the success or read-failure paths, causing a permanent reference leak. The driver’s retry logic on subsequent battery property reads can compound this leak, preventing the nvmem device from ever being freed. Found by code review.
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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于未调用nvmem_device_put()导致引用泄漏，可能导致nvmem设备无法释放。
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 fd46821e85de90fb5b7356251164af4815b6e3f6 ~ fc65520fe0781a1ff46631f111e07b4a1c677b96 -
Linux Linux 5.18 -

II. Public POCs for CVE-2026-72214

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III. Intelligence Information for CVE-2026-72214

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Patches & Fixes for CVE-2026-72214 (5)

Same Patch Batch · Linux · 2026-08-15 · 845 CVEs total

CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72201 9.8 CRITICAL ntfs: validate index entries on reading
CVE-2026-74268 9.8 CRITICAL tcp: clear sock_ops cb flags before force-closing a child socket
CVE-2026-72065 9.8 CRITICAL net: mana: Validate the packet length reported by the NIC
CVE-2026-72064 9.8 CRITICAL net: mana: Sync page pool RX frags for CPU
CVE-2026-74478 9.8 CRITICAL um: vector: fix use-after-free in vector_mmsg_rx()
CVE-2026-72191 9.8 CRITICAL ntfs3: validate split-point offset in indx_insert_into_buffer
CVE-2026-72192 9.8 CRITICAL ntfs3: bound to_move in indx_insert_into_root before hdr_insert_head
CVE-2026-74269 9.8 CRITICAL bnxt: fix head underflow on XDP head-grow
CVE-2026-72194 9.8 CRITICAL fs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow
CVE-2026-72209 9.8 CRITICAL ntfs: validate attribute values on lookup
CVE-2026-72211 9.8 CRITICAL ntfs: grow index root value before reparent header update
CVE-2026-72210 9.8 CRITICAL ntfs: fix off-by-one in mapping pairs decoding bounds checks

Showing top 20 of 845 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-72214

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