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CVE-2026-72481— iio: magnetometer: ak8975: fix potential kernel stack memory 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AK8975驱动中i2c_smbus_read_i2c_block_data_or_emulated()函数返回值检查不足，当返回值小于缓冲区大小时，未初始化的内核栈字节被保留并传递给IIO缓冲区，可能导致内核栈内存泄露到用户空间。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.21% · P12

Possible ATT&CK Techniques 1 AI

T1056.001 · Keylogging

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux bc11ca4a0b84a2f2ebaca2614b92998738d13b1e< 12848f4ded022963944c063e09a192549a4dad1e affected
bc11ca4a0b84a2f2ebaca2614b92998738d13b1e< a9cf46054f81972f8c0f1dc2a79d2a141999dbce affected
bc11ca4a0b84a2f2ebaca2614b92998738d13b1e< 9f920550abacedc7fc3163dea65ac2a7d0b0765d affected
bc11ca4a0b84a2f2ebaca2614b92998738d13b1e< 8cf346074533356d67a6a6a43a192328ad341f11 affected
bc11ca4a0b84a2f2ebaca2614b92998738d13b1e< b974566803bceb72f0b9b5f1d7270b79ba963766 affected
bc11ca4a0b84a2f2ebaca2614b92998738d13b1e< 3d57672119525c59ed73ea21accb001ccbcd6cfd affected
bc11ca4a0b84a2f2ebaca2614b92998738d13b1e< fb27ebf81136e796c7b719303ef6fd7e1ae5d488 affected
bc11ca4a0b84a2f2ebaca2614b92998738d13b1e< a9a00d727b7bbc5e913a919530a9dd468935bf95 affected
… +10 more rows
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I. Basic Information for CVE-2026-72481

Vulnerability Information
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Vulnerability Title
iio: magnetometer: ak8975: fix potential kernel stack memory leak
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iio: magnetometer: ak8975: fix potential kernel stack memory leak Currently in the AK8975 driver there are four instances where potential uninitialized kernel stack memory leaks can occur. If i2c_smbus_read_i2c_block_data_or_emulated() returns a value less than the size of the buffer, uninitialized bytes are retained in the buffer and later the buffer is passed on to IIO buffers, potentially leaking memory to userspace. Fix this by adding checks whether the return value of the function is equal to the size of the buffer and subsequently if the value is lesser than zero to distinguish from a returned error code.
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AK8975驱动中i2c_smbus_read_i2c_block_data_or_emulated()函数返回值检查不足，当返回值小于缓冲区大小时，未初始化的内核栈字节被保留并传递给IIO缓冲区，可能导致内核栈内存泄露到用户空间。
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 bc11ca4a0b84a2f2ebaca2614b92998738d13b1e ~ 12848f4ded022963944c063e09a192549a4dad1e -
Linux Linux 4.7 -

II. Public POCs for CVE-2026-72481

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III. Intelligence Information for CVE-2026-72481

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Patches & Fixes for CVE-2026-72481 (7)

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-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
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-2026-72463 9.8 CRITICAL xfrm: Fix dev use-after-free in xfrm async resumption
CVE-2026-72248 9.8 CRITICAL netfilter: flowtable: support IPIP tunnel with direct xmit
CVE-2026-72477 9.8 CRITICAL fs/ntfs3: call _ntfs_bad_inode() when failing to rename
CVE-2026-72381 9.8 CRITICAL ksmbd: fix use-after-free of fp->owner.name in durable handle owner check
CVE-2026-72473 9.8 CRITICAL xprtrdma: Decouple req recycling from RPC completion
CVE-2026-72472 9.8 CRITICAL nfs: use nfsi->rwsem to protect traversal of the file lock list
CVE-2026-74406 9.8 CRITICAL vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive().
CVE-2026-72222 9.8 CRITICAL sunrpc: pin svc_xprt across the asynchronous TLS handshake callback
CVE-2026-74401 9.8 CRITICAL dlm: fix add msg handle in send_queue ordered
CVE-2026-72137 9.8 CRITICAL xfrm: nat_keepalive: avoid double free on send error
CVE-2026-74376 9.8 CRITICAL md/raid10: reset read_slot when reusing r10bio for discard
CVE-2026-72130 9.8 CRITICAL nvmet-auth: reject short AUTH_RECEIVE buffers

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-2026-72481

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