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CVE-2026-46301— spi: topcliff-pch: fix use-after-free on unbind

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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于spi topcliff-pch驱动在解除绑定时释放后重用，可能导致释放后重用。

AI Predicted 4.4 Difficulty: Hard EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux c37f3c2749b53225d36faa5c583203c5f12ae15b< 43334836b907adc21eab3079d2e6b26754468786 affected
c37f3c2749b53225d36faa5c583203c5f12ae15b< 36e58c436d2c2a797800427dc04d74ffd8b6ce1c affected
c37f3c2749b53225d36faa5c583203c5f12ae15b< 4ca90deeca1c7dd72c1c380ba8143565516def2d affected
c37f3c2749b53225d36faa5c583203c5f12ae15b< d79e92161b65832e0b8cad5f3d84d17e5cd7a970 affected
c37f3c2749b53225d36faa5c583203c5f12ae15b< 8822980668c96b5aa251c1e2daec1873262b8f3f affected
c37f3c2749b53225d36faa5c583203c5f12ae15b< d50ef3553acbacce6f2843304d41d06dca358bb6 affected
c37f3c2749b53225d36faa5c583203c5f12ae15b< 0e8e57f9737ea257634db1d152fc430a0788a3e1 affected
c37f3c2749b53225d36faa5c583203c5f12ae15b< 9d72732fe70c11424bc90ed466c7ccfa58b42a9a affected
… +10 more rows
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I. Basic Information for CVE-2026-46301

Vulnerability Information
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Vulnerability Title
spi: topcliff-pch: fix use-after-free on unbind
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: spi: topcliff-pch: fix use-after-free on unbind Give the driver a chance to flush its queue before releasing the DMA buffers on driver unbind
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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于spi topcliff-pch驱动在解除绑定时释放后重用，可能导致释放后重用。
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 c37f3c2749b53225d36faa5c583203c5f12ae15b ~ 43334836b907adc21eab3079d2e6b26754468786 -
Linux Linux 3.1 -

II. Public POCs for CVE-2026-46301

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III. Intelligence Information for CVE-2026-46301

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Patches & Fixes for CVE-2026-46301 (6)

Same Patch Batch · Linux · 2026-06-08 · 41 CVEs total

CVE-2026-46289 9.8 CRITICAL lib/scatterlist: fix length calculations in extract_kvec_to_sg
CVE-2026-46288 8.4 HIGH of: unittest: fix use-after-free in of_unittest_changeset()
CVE-2026-46307 8.3 HIGH wifi: ath5k: do not access array OOB
CVE-2026-46303 8.2 HIGH isofs: validate Rock Ridge CE continuation extent against volume size
CVE-2026-46274 7.8 HIGH io-wq: check that the predecessor is hashed in io_wq_remove_pending()
CVE-2026-46275 7.8 HIGH Bluetooth: hci_uart: fix UAFs and race conditions in close and init paths
CVE-2026-46277 7.8 HIGH mm/zone_device: do not touch device folio after calling ->folio_free()
CVE-2026-46280 7.8 HIGH lib: test_hmm: evict device pages on file close to avoid use-after-free
CVE-2026-46311 7.8 HIGH drm/amdgpu/userq: fix access to stale wptr mapping
CVE-2026-46304 7.5 HIGH nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free
CVE-2026-46306 7.5 HIGH flow_dissector: do not dissect PPPoE PFC frames
CVE-2026-46299 7.0 HIGH hfsplus: fix held lock freed on hfsplus_fill_super()
CVE-2026-46296 spi: s3c64xx: fix NULL-deref on driver unbind
CVE-2026-46314 drm/v3d: Reject empty multisync extension to prevent infinite loop
CVE-2026-46298 pseries/papr-hvpipe: Fix race with interrupt handler
CVE-2026-46302 selinux: allow multiple opens of /sys/fs/selinux/policy
CVE-2026-46305 staging: rtl8723bs: os_dep: avoid NULL pointer dereference in rtw_cbuf_alloc
CVE-2026-46308 pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()
CVE-2026-46309 drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise
CVE-2026-46310 media: renesas: vsp1: Fix NULL pointer deref on module unload

Showing top 20 of 41 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46301

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