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CVE-2025-39869— dmaengine: ti: edma: Fix memory allocation size for queue_priority_map

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，该漏洞源于内存分配大小不当，可能导致内存越界写入。

CVSS 8.4 · High EPSS 0.16% · P5

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 2b6b3b7420190888793c49e97276e1e73bd7eaed< 7d4de60d6db02d9b01d5890d5156b04fad65d07a affected
2b6b3b7420190888793c49e97276e1e73bd7eaed< d722de80ce037dccf6931e778f4a46499d51bdf9 affected
2b6b3b7420190888793c49e97276e1e73bd7eaed< 301a96cc4dc006c9a285913d301e681cfbf7edb6 affected
2b6b3b7420190888793c49e97276e1e73bd7eaed< 5e462fa0dfdb52b3983cf41532d3d4c7d63e2f93 affected
2b6b3b7420190888793c49e97276e1e73bd7eaed< 1baed10553fc8b388351d8fc803e3ae6f1a863bc affected
2b6b3b7420190888793c49e97276e1e73bd7eaed< 069fd1688c57c0cc8a3de64d108579b31676f74b affected
2b6b3b7420190888793c49e97276e1e73bd7eaed< d5e82f3f2c918d446df46e8d65f8083fd97cdec5 affected
2b6b3b7420190888793c49e97276e1e73bd7eaed< e63419dbf2ceb083c1651852209c7f048089ac0f affected
… +10 more rows
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I. Basic Information for CVE-2025-39869

Vulnerability Information
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Vulnerability Title
dmaengine: ti: edma: Fix memory allocation size for queue_priority_map
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: ti: edma: Fix memory allocation size for queue_priority_map Fix a critical memory allocation bug in edma_setup_from_hw() where queue_priority_map was allocated with insufficient memory. The code declared queue_priority_map as s8 (*)[2] (pointer to array of 2 s8), but allocated memory using sizeof(s8) instead of the correct size. This caused out-of-bounds memory writes when accessing: queue_priority_map[i][0] = i; queue_priority_map[i][1] = i; The bug manifested as kernel crashes with "Oops - undefined instruction" on ARM platforms (BeagleBoard-X15) during EDMA driver probe, as the memory corruption triggered kernel hardening features on Clang. Change the allocation to use sizeof(*queue_priority_map) which automatically gets the correct size for the 2D array structure.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/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，该漏洞源于内存分配大小不当，可能导致内存越界写入。
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 2b6b3b7420190888793c49e97276e1e73bd7eaed ~ 7d4de60d6db02d9b01d5890d5156b04fad65d07a -
Linux Linux 4.4 -

II. Public POCs for CVE-2025-39869

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III. Intelligence Information for CVE-2025-39869

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Patches & Fixes for CVE-2025-39869 (3)

Same Patch Batch · Linux · 2025-09-23 · 21 CVEs total

CVE-2025-39880 9.8 CRITICAL libceph: fix invalid accesses to ceph_connection_v1_info
CVE-2025-39882 8.4 HIGH drm/mediatek: fix potential OF node use-after-free
CVE-2025-39888 7.8 HIGH fuse: Block access to folio overlimit
CVE-2025-39872 7.8 HIGH hsr: hold rcu and dev lock for hsr_get_port_ndev
CVE-2025-39873 7.8 HIGH can: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB
CVE-2025-39868 7.8 HIGH erofs: fix runtime warning on truncate_folio_batch_exceptionals()
CVE-2025-39881 7.8 HIGH kernfs: Fix UAF in polling when open file is released
CVE-2025-39878 ceph: fix crash after fscrypt_encrypt_pagecache_blocks() error
CVE-2025-39887 tracing/osnoise: Fix null-ptr-deref in bitmap_parselist()
CVE-2025-39885 ocfs2: fix recursive semaphore deadlock in fiemap call
CVE-2025-39886 bpf: Tell memcg to use allow_spinning=false path in bpf_timer_init()
CVE-2025-39883 mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory
CVE-2025-39884 btrfs: fix subvolume deletion lockup caused by inodes xarray race
CVE-2025-39879 ceph: always call ceph_shift_unused_folios_left()
CVE-2025-39877 mm/damon/sysfs: fix use-after-free in state_show()
CVE-2025-39876 net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable()
CVE-2025-39874 macsec: sync features on RTM_NEWLINK
CVE-2025-39875 igb: Fix NULL pointer dereference in ethtool loopback test
CVE-2025-39871 dmaengine: idxd: Remove improper idxd_free
CVE-2025-39870 dmaengine: idxd: Fix double free in idxd_setup_wqs()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39869

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