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CVE-2026-80902— dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA

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存在安全漏洞，该漏洞源于终止DMA传输时活动描述符未被正确回收，仅处理循环描述符，导致非循环描述符及其LLI链永久泄漏，并可能造成列表损坏。

AI Predicted 4.4 Difficulty: Hard EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1217.002

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 555859308723d8d5b828304f5eb9281143fd86b5< bb87440561eb72b47a2b848b5373b86433b247e6 affected
555859308723d8d5b828304f5eb9281143fd86b5< 004a7a02982bed0a727a4ac7be400f00f353e7a2 affected
555859308723d8d5b828304f5eb9281143fd86b5< b150f603083cc8b72b0cbf13ec3e91f85b4390a0 affected
555859308723d8d5b828304f5eb9281143fd86b5< 27806fe7b9701af0963dcd510e30e7d0cc314c43 affected
555859308723d8d5b828304f5eb9281143fd86b5< 1ccc5c059d067c5358682ad5352e7d7e9239ed9b affected
555859308723d8d5b828304f5eb9281143fd86b5< 9086b488f2737d5dcee86852b83f2059f1cdfabf affected
555859308723d8d5b828304f5eb9281143fd86b5< d4ba6aa65fcd797152d3aebd428a7b2da49cd5eb affected
555859308723d8d5b828304f5eb9281143fd86b5< ab1150115e68a46b687eb38c1ab92782018c9f2c affected
… +10 more rows
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I. Basic Information for CVE-2026-80902

Vulnerability Information
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Vulnerability Title
dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA When terminating DMA transfers, active descriptors are not properly reclaimed. Only cyclic descriptors were handled, leaving non-cyclic descriptors and their LLI chains to be permanently leaked. Fix by using vchan_terminate_vdesc() which handles both cyclic and non-cyclic descriptors by adding them to desc_terminated queue for proper cleanup. Add pchan->desc != pchan->done check to prevent double-adding completed descriptors, which would corrupt the list.
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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于终止DMA传输时活动描述符未被正确回收，仅处理循环描述符，导致非循环描述符及其LLI链永久泄漏，并可能造成列表损坏。
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 555859308723d8d5b828304f5eb9281143fd86b5 ~ bb87440561eb72b47a2b848b5373b86433b247e6 -
Linux Linux 3.17 -

II. Public POCs for CVE-2026-80902

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III. Intelligence Information for CVE-2026-80902

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Patches & Fixes for CVE-2026-80902 (7)

Same Patch Batch · Linux · 2026-09-04 · 156 CVEs total

CVE-2026-80864 RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp
CVE-2026-80855 fuse: fix invalidate lock leak on open O_TRUNC DAX failure
CVE-2026-80856 fuse: fix invalidate lock leak on setattr writeback failure
CVE-2026-80857 fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free
CVE-2026-80858 fuse: publish io-uring queues with release semantics
CVE-2026-80859 fuse: fix missing barrier when checking io-uring readiness
CVE-2026-80860 fuse: fix race between interrupt and resend
CVE-2026-80861 usb: xhci: bail out of setup if the controller is inaccessible
CVE-2026-80862 nvme-tcp: fix usage of page_frag_cache
CVE-2026-80863 RDMA/rxe: Fix OOB in free_rd_atomic_resources()
CVE-2026-80869 ntfs: bound the attribute-list entry in ntfs_read_inode_mount()
CVE-2026-80873 KVM: arm64: nv: Write ESR_EL2 for injected nested SError exceptions
CVE-2026-80872 ALSA: hda/tas2781: Cancel async firmware request at unbind
CVE-2026-80871 crypto: xilinx-trng - Remove crypto_rng interface
CVE-2026-80870 drm/amdkfd: Validate CRIU-restored IDs before idr_alloc
CVE-2026-80867 alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
CVE-2026-80865 bpf: Add missing access_ok call to copy_user_syms
CVE-2026-80866 tipc: avoid busy looping in tipc_exit_net()
CVE-2026-80854 usb: gadget: f_tcm: keep port count until LUN teardown completes
CVE-2026-80868 ntfs3: Allocate iomap inline_data using alloc_page

Showing top 20 of 156 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-80902

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