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CVE-2025-39907— mtd: rawnand: stm32_fmc2: avoid overlapping mappings on ECC 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ECC缓冲区存在重叠映射，可能导致DMA映射冲突。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 2cd457f328c100bc98e36d55fe210e9ab067c704< dc1c6e60993b93b87604eb11266ac72e1a3be9e0 affected
2cd457f328c100bc98e36d55fe210e9ab067c704< dfe2ac47a6ee0ab50393694517c54ef1e276dda3 affected
2cd457f328c100bc98e36d55fe210e9ab067c704< e32a2ea52b51368774d014e5bcd9b86110a2b727 affected
2cd457f328c100bc98e36d55fe210e9ab067c704< 75686c49574dd5f171ca682c18717787f1d8d55e affected
2cd457f328c100bc98e36d55fe210e9ab067c704< 06d8ef8f853752fea88c8d5bb093a40e71b330cf affected
2cd457f328c100bc98e36d55fe210e9ab067c704< 26adba1e7d7924174e15a3ba4b1132990786300b affected
2cd457f328c100bc98e36d55fe210e9ab067c704< f6fd98d961fa6f97347cead4f08ed862cbbb91ff affected
2cd457f328c100bc98e36d55fe210e9ab067c704< 513c40e59d5a414ab763a9c84797534b5e8c208d affected
… +10 more rows
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I. Basic Information for CVE-2025-39907

Vulnerability Information
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Vulnerability Title
mtd: rawnand: stm32_fmc2: avoid overlapping mappings on ECC buffer
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: stm32_fmc2: avoid overlapping mappings on ECC buffer Avoid below overlapping mappings by using a contiguous non-cacheable buffer. [ 4.077708] DMA-API: stm32_fmc2_nfc 48810000.nand-controller: cacheline tracking EEXIST, overlapping mappings aren't supported [ 4.089103] WARNING: CPU: 1 PID: 44 at kernel/dma/debug.c:568 add_dma_entry+0x23c/0x300 [ 4.097071] Modules linked in: [ 4.100101] CPU: 1 PID: 44 Comm: kworker/u4:2 Not tainted 6.1.82 #1 [ 4.106346] Hardware name: STMicroelectronics STM32MP257F VALID1 SNOR / MB1704 (LPDDR4 Power discrete) + MB1703 + MB1708 (SNOR MB1730) (DT) [ 4.118824] Workqueue: events_unbound deferred_probe_work_func [ 4.124674] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 4.131624] pc : add_dma_entry+0x23c/0x300 [ 4.135658] lr : add_dma_entry+0x23c/0x300 [ 4.139792] sp : ffff800009dbb490 [ 4.143016] x29: ffff800009dbb4a0 x28: 0000000004008022 x27: ffff8000098a6000 [ 4.150174] x26: 0000000000000000 x25: ffff8000099e7000 x24: ffff8000099e7de8 [ 4.157231] x23: 00000000ffffffff x22: 0000000000000000 x21: ffff8000098a6a20 [ 4.164388] x20: ffff000080964180 x19: ffff800009819ba0 x18: 0000000000000006 [ 4.171545] x17: 6361727420656e69 x16: 6c6568636163203a x15: 72656c6c6f72746e [ 4.178602] x14: 6f632d646e616e2e x13: ffff800009832f58 x12: 00000000000004ec [ 4.185759] x11: 00000000000001a4 x10: ffff80000988af58 x9 : ffff800009832f58 [ 4.192916] x8 : 00000000ffffefff x7 : ffff80000988af58 x6 : 80000000fffff000 [ 4.199972] x5 : 000000000000bff4 x4 : 0000000000000000 x3 : 0000000000000000 [ 4.207128] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000812d2c40 [ 4.214185] Call trace: [ 4.216605] add_dma_entry+0x23c/0x300 [ 4.220338] debug_dma_map_sg+0x198/0x350 [ 4.224373] __dma_map_sg_attrs+0xa0/0x110 [ 4.228411] dma_map_sg_attrs+0x10/0x2c [ 4.232247] stm32_fmc2_nfc_xfer.isra.0+0x1c8/0x3fc [ 4.237088] stm32_fmc2_nfc_seq_read_page+0xc8/0x174 [ 4.242127] nand_read_oob+0x1d4/0x8e0 [ 4.245861] mtd_read_oob_std+0x58/0x84 [ 4.249596] mtd_read_oob+0x90/0x150 [ 4.253231] mtd_read+0x68/0xac
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ECC缓冲区存在重叠映射，可能导致DMA映射冲突。
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 2cd457f328c100bc98e36d55fe210e9ab067c704 ~ dc1c6e60993b93b87604eb11266ac72e1a3be9e0 -
Linux Linux 5.1 -

II. Public POCs for CVE-2025-39907

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III. Intelligence Information for CVE-2025-39907

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Patches & Fixes for CVE-2025-39907 (3)

Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total

CVE-2023-53517 9.8 CRITICAL tipc: do not update mtu if msg_max is too small in mtu negotiation
CVE-2025-39919 8.8 HIGH wifi: mt76: mt7996: add missing check for rx wcid entries
CVE-2025-39918 8.8 HIGH wifi: mt76: fix linked list corruption
CVE-2023-53454 8.8 HIGH HID: multitouch: Correct devm device reference for hidinput input_dev name
CVE-2022-50442 8.4 HIGH fs/ntfs3: Validate buffer length while parsing index
CVE-2023-53493 8.4 HIGH accel/qaic: tighten bounds checking in decode_message()
CVE-2023-53492 7.8 HIGH netfilter: nf_tables: do not ignore genmask when looking up chain by id
CVE-2025-39924 7.8 HIGH erofs: fix invalid algorithm for encoded extents
CVE-2023-53510 7.8 HIGH scsi: ufs: core: Fix handling of lrbp->cmd
CVE-2025-39927 7.8 HIGH ceph: fix race condition validating r_parent before applying state
CVE-2022-50421 7.8 HIGH rpmsg: char: Avoid double destroy of default endpoint
CVE-2023-53506 7.8 HIGH udf: Do not bother merging very long extents
CVE-2022-50423 7.8 HIGH ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()
CVE-2023-53504 7.8 HIGH RDMA/bnxt_re: Properly order ib_device_unalloc() to avoid UAF
CVE-2023-53495 7.8 HIGH net: ethernet: mvpp2_main: fix possible OOB write in mvpp2_ethtool_get_rxnfc()
CVE-2023-53494 7.8 HIGH crypto: xts - Handle EBUSY correctly
CVE-2022-50437 7.8 HIGH drm/msm/hdmi: fix memory corruption with too many bridges
CVE-2023-53478 7.8 HIGH tracing/synthetic: Fix races on freeing last_cmd
CVE-2023-53481 7.8 HIGH ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed
CVE-2023-53486 7.8 HIGH fs/ntfs3: Enhance the attribute size check

Showing top 20 of 169 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39907

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