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CVE-2026-46255— dmaengine: fsl-edma: don't explicitly disable clocks in .remove()

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fsl-edma驱动在remove函数中手动禁用已由devm_clk_get_enabled自动管理的时钟，可能导致时钟禁用警告。

AI Predicted 5.5 Difficulty: Easy EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux a9903de3aa16731846bf924342eca44bdabe9be6< 533d495f15e4c88ad5246c7f90ae026702e28d75 affected
a9903de3aa16731846bf924342eca44bdabe9be6< 68feac21bd4de7ae4faba05704c404861d991fcf affected
a9903de3aa16731846bf924342eca44bdabe9be6< bda244871179543dd3be7d093236cb33b2fb1765 affected
a9903de3aa16731846bf924342eca44bdabe9be6< b84dba68c4823da452cec99a5d213571a65d06de affected
a9903de3aa16731846bf924342eca44bdabe9be6< 666c53e94c1d0bf0bdf14c49505ece9ddbe725bc affected
6.6 affected
< 6.6 unaffected
6.6.128≤ 6.6.* unaffected
… +4 more rows
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I. Basic Information for CVE-2026-46255

Vulnerability Information
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Vulnerability Title
dmaengine: fsl-edma: don't explicitly disable clocks in .remove()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: fsl-edma: don't explicitly disable clocks in .remove() The clocks in fsl_edma_engine::muxclk are allocated and enabled with devm_clk_get_enabled(), which automatically cleans these resources up, but these clocks are also manually disabled in fsl_edma_remove(). This causes warnings on driver removal for each clock: edma_module already disabled WARNING: CPU: 0 PID: 418 at drivers/clk/clk.c:1200 clk_core_disable+0x198/0x1c8 [...] Call trace: clk_core_disable+0x198/0x1c8 (P) clk_disable+0x34/0x58 fsl_edma_remove+0x74/0xe8 [fsl_edma] [...] ---[ end trace 0000000000000000 ]--- edma_module already unprepared WARNING: CPU: 0 PID: 418 at drivers/clk/clk.c:1059 clk_core_unprepare+0x1f8/0x220 [...] Call trace: clk_core_unprepare+0x1f8/0x220 (P) clk_unprepare+0x34/0x58 fsl_edma_remove+0x7c/0xe8 [fsl_edma] [...] ---[ end trace 0000000000000000 ]--- Fix these warnings by removing the unnecessary fsl_disable_clocks() call in fsl_edma_remove().
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fsl-edma驱动在remove函数中手动禁用已由devm_clk_get_enabled自动管理的时钟，可能导致时钟禁用警告。
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 a9903de3aa16731846bf924342eca44bdabe9be6 ~ 533d495f15e4c88ad5246c7f90ae026702e28d75 -
Linux Linux 6.6 -

II. Public POCs for CVE-2026-46255

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III. Intelligence Information for CVE-2026-46255

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Patches & Fixes for CVE-2026-46255 (5)

Same Patch Batch · Linux · 2026-06-03 · 32 CVEs total

CVE-2026-46244 9.1 CRITICAL netfilter: nft_inner: Fix IPv6 inner_thoff desync
CVE-2026-46266 9.1 CRITICAL inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP
CVE-2026-46264 8.8 HIGH drm/xe/pf: Fix sysfs initialization
CVE-2026-46273 8.6 HIGH ibmveth: Disable GSO for packets with small MSS
CVE-2026-46251 8.4 HIGH btrfs: fix block_group_tree dirty_list corruption
CVE-2026-46270 8.4 HIGH power: supply: rt9455: Fix use-after-free in power_supply_changed()
CVE-2026-46263 7.8 HIGH drm/amd/display: Fix out-of-bounds stream encoder index v3
CVE-2026-46260 7.8 HIGH ipv6: Fix out-of-bound access in fib6_add_rt2node().
CVE-2026-46259 7.8 HIGH procfs: fix missing RCU protection when reading real_parent in do_task_stat()
CVE-2026-46271 7.8 HIGH wifi: ath12k: do WoW offloads only on primary link
CVE-2026-46253 7.8 HIGH pstore/ram: fix buffer overflow in persistent_ram_save_old()
CVE-2026-46265 7.5 HIGH RDMA/hns: Fix WQ_MEM_RECLAIM warning
CVE-2026-46250 7.3 HIGH MIPS: Work around LLVM bug when gp is used as global register variable
CVE-2025-71314 drm/panthor: Recover from panthor_gpu_flush_caches() failures
CVE-2026-46245 drm/amd/display: Fix dc_link NULL handling in HPD init
CVE-2025-71313 PCI: endpoint: Add missing NULL check for alloc_workqueue()
CVE-2026-46246 power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler
CVE-2026-46247 clk: qcom: gfx3d: add parent to parent request map
CVE-2026-46248 wifi: ath12k: clear stale link mapping of ahvif->links_map
CVE-2026-46249 octeontx2-af: Fix PF driver crash with kexec kernel booting

Showing top 20 of 32 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46255

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