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CVE-2026-74460— can: ems_usb: validate CPC message lengths

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ems_usb_read_bulk_callback函数在解析USB接收缓冲区中的CPC消息时未正确验证消息长度，可能导致越界读取。

AI Predicted 4.9 Difficulty: Moderate EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 702171adeed3607ee9603ec30ce081411e36ae42< 1c380a332e342b7d58c86c4f556cb0823b16a9b8 affected
702171adeed3607ee9603ec30ce081411e36ae42< bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6 affected
702171adeed3607ee9603ec30ce081411e36ae42< db5655287d78f00daf98888a520bb8da4d30126d affected
702171adeed3607ee9603ec30ce081411e36ae42< ce8125566b1d0b0f16449407e014addf451804ea affected
702171adeed3607ee9603ec30ce081411e36ae42< 0b9090717c7e2184e2c427bbcc752f295116ac1d affected
702171adeed3607ee9603ec30ce081411e36ae42< 0b23144c59c126beb4a7761a85a194ae0fe668a5 affected
702171adeed3607ee9603ec30ce081411e36ae42< df3ac2a672a5284441f120d486acabdd6740fc2a affected
702171adeed3607ee9603ec30ce081411e36ae42< 02925f51377f2a42a6724f00549167499c9302e5 affected
… +10 more rows
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I. Basic Information for CVE-2026-74460

Vulnerability Information
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Vulnerability Title
can: ems_usb: validate CPC message lengths
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: can: ems_usb: validate CPC message lengths ems_usb_read_bulk_callback() walks CPC messages packed in one USB receive buffer. Check that each declared message fits in the URB payload. Also require the type-specific payload to cover the fields used by the CAN, state, error and overrun handlers.
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ems_usb_read_bulk_callback函数在解析USB接收缓冲区中的CPC消息时未正确验证消息长度，可能导致越界读取。
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 702171adeed3607ee9603ec30ce081411e36ae42 ~ 1c380a332e342b7d58c86c4f556cb0823b16a9b8 -
Linux Linux 2.6.32 -

II. Public POCs for CVE-2026-74460

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III. Intelligence Information for CVE-2026-74460

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Patches & Fixes for CVE-2026-74460 (8)

Same Patch Batch · Linux · 2026-08-15 · 844 CVEs total

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-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
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-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72319 9.8 CRITICAL ipvs: ensure inner headers in ICMP errors are in headroom
CVE-2026-72220 9.8 CRITICAL sunrpc: harden rq_procinfo lifecycle to prevent double-free
CVE-2026-72217 9.8 CRITICAL SUNRPC: Bound-check xdr_buf_to_bvec() stores before writing
CVE-2026-74384 9.8 CRITICAL nvme-multipath: fix flex array size in struct nvme_ns_head
CVE-2026-72299 9.8 CRITICAL tipc: restrict socket queue dumps in enqueue tracepoints
CVE-2026-72210 9.8 CRITICAL ntfs: fix off-by-one in mapping pairs decoding bounds checks
CVE-2026-72211 9.8 CRITICAL ntfs: grow index root value before reparent header update
CVE-2026-72317 9.8 CRITICAL SUNRPC: pin upper rpc_clnt across the TLS connect_worker
CVE-2026-72209 9.8 CRITICAL ntfs: validate attribute values on lookup
CVE-2026-74268 9.8 CRITICAL tcp: clear sock_ops cb flags before force-closing a child socket
CVE-2026-72207 9.8 CRITICAL ntfs: not change 0-byte $DATA attribute to non-resident
CVE-2026-74267 9.8 CRITICAL net/sched: sch_codel: Do not call qdisc_tree_reduce_backlog during peek before restoring q

Showing top 20 of 844 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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