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CVE-2026-63967— iio: imu: st_lsm6dsx: fix stack leak in tagged FIFO buffer

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基金会开源的一款操作系统内核。 Linux kernel 5.10版本存在安全漏洞，该漏洞源于st_lsm6dsx驱动中标记FIFO缓冲区未初始化，导致栈信息泄露，可能将敏感数据泄露至用户空间。

AI Predicted 4.9 Difficulty: Trivial EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux c14edb4d0bdc53f969ea84c7f384472c28b1a9f8< ff8d3c088b77b11782f2c3b97e37425be050e8de affected
c14edb4d0bdc53f969ea84c7f384472c28b1a9f8< fe1a7f99e72ebd2880515332b79b8c256be22aca affected
c14edb4d0bdc53f969ea84c7f384472c28b1a9f8< babf1943a40bb5669db57d30ca16c22504b18e07 affected
c14edb4d0bdc53f969ea84c7f384472c28b1a9f8< d42ac0bfb6a16617c62a59d53706579c7fadbfa6 affected
c14edb4d0bdc53f969ea84c7f384472c28b1a9f8< 3147b303b8c7d9f91da4b849ece33b45048f5eaf affected
c14edb4d0bdc53f969ea84c7f384472c28b1a9f8< e6bb3a49c5f9de870ea95e69775df785728e3366 affected
c14edb4d0bdc53f969ea84c7f384472c28b1a9f8< 890d0312d5f94be43eac21f5a34d3bccc60d051b affected
c14edb4d0bdc53f969ea84c7f384472c28b1a9f8< c9d8e9adaa63150ef7e833480b799d0bab83a276 affected
… +12 more rows
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I. Basic Information for CVE-2026-63967

Vulnerability Information
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Vulnerability Title
iio: imu: st_lsm6dsx: fix stack leak in tagged FIFO buffer
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iio: imu: st_lsm6dsx: fix stack leak in tagged FIFO buffer The tagged FIFO path declares iio_buff on the stack with __aligned(8) but no initializer, but there is a hole in the structure, which will then leak to userspace as ST_LSM6DSX_SAMPLE_SIZE bytes (6) will be copied, but the space between that and the timestamp are not initialized. Commit c14edb4d0bdc ("iio:imu:st_lsm6dsx Fix alignment and data leak issues") moved the untagged FIFO path to a kzalloc'd buffer in hw->scan, but for the tagged path it only added the alignment qualifier and not the initializer :( Fix this by just zero-initializing the structure on the stack.
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基金会开源的一款操作系统内核。 Linux kernel 5.10版本存在安全漏洞，该漏洞源于st_lsm6dsx驱动中标记FIFO缓冲区未初始化，导致栈信息泄露，可能将敏感数据泄露至用户空间。
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 c14edb4d0bdc53f969ea84c7f384472c28b1a9f8 ~ ff8d3c088b77b11782f2c3b97e37425be050e8de -
Linux Linux 5.10 -

II. Public POCs for CVE-2026-63967

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III. Intelligence Information for CVE-2026-63967

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Patches & Fixes for CVE-2026-63967 (5)

Same Patch Batch · Linux · 2026-07-19 · 429 CVEs total

CVE-2026-63795 10.0 CRITICAL 9p: avoid putting oldfid in p9_client_walk() error path
CVE-2026-64037 9.8 CRITICAL wifi: iwlwifi: mld: fix TSO segmentation explosion when AMSDU is disabled
CVE-2026-63993 9.8 CRITICAL vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()
CVE-2026-63994 9.8 CRITICAL tunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp[v6]()
CVE-2026-64142 9.8 CRITICAL ksmbd: close durable scavenger races against m_fp_list lookups
CVE-2026-64000 9.8 CRITICAL net: hsr: fix potential OOB access in supervision frame handling
CVE-2026-64046 9.8 CRITICAL net: tls: prevent chain-after-chain in plain text SG
CVE-2026-64162 9.8 CRITICAL idpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init()
CVE-2026-53399 9.8 CRITICAL nfsd: release layout stid on setlease failure
CVE-2026-53398 9.8 CRITICAL NFSD: Fix SECINFO_NO_NAME decode error cleanup
CVE-2026-64007 9.8 CRITICAL netfilter: synproxy: refresh tcphdr after skb_ensure_writable
CVE-2026-63825 9.8 CRITICAL gcov: use atomic counter updates to fix concurrent access crashes
CVE-2026-64016 9.8 CRITICAL ksmbd: fix durable reconnect error path file lifetime
CVE-2026-63800 9.8 CRITICAL pNFS: Fix use-after-free in pnfs_update_layout()
CVE-2026-63808 9.8 CRITICAL exfat: fix potential use-after-free in exfat_find_dir_entry()
CVE-2026-64025 9.8 CRITICAL bpf, skmsg: fix verdict sk_data_ready racing with ktls rx
CVE-2026-64125 9.8 CRITICAL net: bcmgenet: keep RBUF EEE/PM disabled
CVE-2026-64033 9.8 CRITICAL RDMA/rtrs: Fix use-after-free in path file creation cleanup
CVE-2026-64089 9.8 CRITICAL batman-adv: tt: fix negative last_changeset_len
CVE-2026-64035 9.8 CRITICAL igc: set tx buffer type for SMD frames

Showing top 20 of 429 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-63967

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