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CVE-2026-68467— mtd: mchp23k256: use SPI match data for chip caps

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 4.13版本存在安全漏洞，该漏洞源于mchp23k256驱动在获取芯片容量信息时使用of_device_get_match_data()，导致非OF SPI modalias匹配时错误回退到mchp23k256_caps，可能造成错误的MTD几何结构。

CVSS 7.8 · High EPSS 0.13% · P3

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 4379075a870b8de43a9ecd5b46884953234fc669< 2e179b028da9fd628a09286a2c9df4fa076b2cc9 affected
4379075a870b8de43a9ecd5b46884953234fc669< a0c38083623c8b210a5b87fd34bebd05aa935ae8 affected
4379075a870b8de43a9ecd5b46884953234fc669< 7c0a3a73dccc9a3fc701f6be762449f18d0ca0fc affected
4379075a870b8de43a9ecd5b46884953234fc669< dbe2254d1da99c986f9a3392471fc5eaa3229647 affected
4379075a870b8de43a9ecd5b46884953234fc669< 04ebd3766861f219325852c9598e0f0281cb3636 affected
4379075a870b8de43a9ecd5b46884953234fc669< 09e044192a42f716215fbd1a100ee87fa57426aa affected
4379075a870b8de43a9ecd5b46884953234fc669< d322e40f4edf92bf0ca329e5aa4ae1c0316feb38 affected
4.13 affected
… +8 more rows
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I. Basic Information for CVE-2026-68467

Vulnerability Information
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Vulnerability Title
mtd: mchp23k256: use SPI match data for chip caps
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mtd: mchp23k256: use SPI match data for chip caps The driver stores chip capacity information in both the OF match table and the SPI id table. Probe currently uses of_device_get_match_data(), so a non-OF SPI modalias match falls back to mchp23k256_caps even when the SPI id table selected a different part. Use spi_get_device_match_data() so SPI id-table driver_data is consumed when OF match data is absent. This keeps the existing default fallback while avoiding the wrong MTD geometry for id-table-only matches.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 4.13版本存在安全漏洞，该漏洞源于mchp23k256驱动在获取芯片容量信息时使用of_device_get_match_data()，导致非OF SPI modalias匹配时错误回退到mchp23k256_caps，可能造成错误的MTD几何结构。
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 4379075a870b8de43a9ecd5b46884953234fc669 ~ 2e179b028da9fd628a09286a2c9df4fa076b2cc9 -
Linux Linux 4.13 -

II. Public POCs for CVE-2026-68467

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III. Intelligence Information for CVE-2026-68467

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Patches & Fixes for CVE-2026-68467 (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-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
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-2026-72421 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-2026-72451 9.8 CRITICAL xfrm: Fix xfrm state cache insertion race
CVE-2026-72323 9.8 CRITICAL ipv4: igmp: Fix potential UAF in igmp_gq_start_timer()
CVE-2026-72322 9.8 CRITICAL ipv6: mcast: Fix potential UAF in MLD delayed work
CVE-2026-72436 9.8 CRITICAL netfilter: ipset: Don't use test_bit() in lockless RCU readers in hash types
CVE-2026-72129 9.8 CRITICAL nvmet-rdma: handle inline data with a nonzero offset
CVE-2026-72130 9.8 CRITICAL nvmet-auth: reject short AUTH_RECEIVE buffers
CVE-2026-72206 9.8 CRITICAL ntfs: validate index block header more strictly
CVE-2026-74384 9.8 CRITICAL nvme-multipath: fix flex array size in struct nvme_ns_head
CVE-2026-72319 9.8 CRITICAL ipvs: ensure inner headers in ICMP errors are in headroom
CVE-2026-72317 9.8 CRITICAL SUNRPC: pin upper rpc_clnt across the TLS connect_worker
CVE-2026-72137 9.8 CRITICAL xfrm: nat_keepalive: avoid double free on send error
CVE-2026-74433 9.8 CRITICAL rxrpc: Fix UAF in rxgk_issue_challenge()

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-2026-68467

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