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CVE-2026-63859— net: airoha: Add missing bits in airoha_qdma_cleanup_tx_queue()

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基金会开源的一款操作系统内核。 Linux kernel 6.11版本存在安全漏洞，该漏洞源于airoha_qdma_cleanup_tx_queue()函数缺少重置DMA TX描述符和TX_DMA_IDX的逻辑，可能导致QDMA TX环状态异常。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 23020f04932701d5c8363e60756f12b43b8ed752< c0cfce4d76702dba9601a4020df1a0bc35806efc affected
23020f04932701d5c8363e60756f12b43b8ed752< 9b5d56fe389d68ede080c716e6f10895facaf7db affected
23020f04932701d5c8363e60756f12b43b8ed752< 3309965fe44c00fd65af7cef5016e9e782c021a7 affected
6.11 affected
< 6.11 unaffected
6.18.33≤ 6.18.* unaffected
7.0.10≤ 7.0.* unaffected
7.1≤ * unaffected
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I. Basic Information for CVE-2026-63859

Vulnerability Information
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Vulnerability Title
net: airoha: Add missing bits in airoha_qdma_cleanup_tx_queue()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: airoha: Add missing bits in airoha_qdma_cleanup_tx_queue() Similar to airoha_qdma_cleanup_rx_queue(), reset DMA TX descriptors in airoha_qdma_cleanup_tx_queue routine. Moreover, reset TX_DMA_IDX to TX_CPU_IDX to notify the NIC the QDMA TX ring is empty.
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基金会开源的一款操作系统内核。 Linux kernel 6.11版本存在安全漏洞，该漏洞源于airoha_qdma_cleanup_tx_queue()函数缺少重置DMA TX描述符和TX_DMA_IDX的逻辑，可能导致QDMA TX环状态异常。
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 23020f04932701d5c8363e60756f12b43b8ed752 ~ c0cfce4d76702dba9601a4020df1a0bc35806efc -
Linux Linux 6.11 -

II. Public POCs for CVE-2026-63859

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III. Intelligence Information for CVE-2026-63859

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Patches & Fixes for CVE-2026-63859 (3)

Same Patch Batch · Linux · 2026-07-19 · 429 CVEs total

CVE-2026-63795 10.0 CRITICAL 9p: avoid putting oldfid in p9_client_walk() error path
CVE-2026-64056 9.8 CRITICAL net: ethernet: cortina: Make RX SKB per-port
CVE-2026-63887 9.8 CRITICAL scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf
CVE-2026-53399 9.8 CRITICAL nfsd: release layout stid on setlease failure
CVE-2026-53398 9.8 CRITICAL NFSD: Fix SECINFO_NO_NAME decode error cleanup
CVE-2026-63984 9.8 CRITICAL ipv6: rpl: fix hdrlen overflow in ipv6_rpl_srh_decompress()
CVE-2026-63886 9.8 CRITICAL scsi: target: iscsi: Validate CHAP_R length before base64 decode
CVE-2026-64035 9.8 CRITICAL igc: set tx buffer type for SMD frames
CVE-2026-64150 9.8 CRITICAL netfilter: nft_inner: release local_lock before re-enabling softirqs
CVE-2026-63924 9.8 CRITICAL ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()
CVE-2026-63979 9.8 CRITICAL net/handshake: hand off the pinned file reference to accept_doit
CVE-2026-63800 9.8 CRITICAL pNFS: Fix use-after-free in pnfs_update_layout()
CVE-2026-64132 9.8 CRITICAL ipv6: ioam: refresh hdr pointer before ioam6_event()
CVE-2026-64037 9.8 CRITICAL wifi: iwlwifi: mld: fix TSO segmentation explosion when AMSDU is disabled
CVE-2026-63978 9.8 CRITICAL net/handshake: Drain pending requests at net namespace exit
CVE-2026-64016 9.8 CRITICAL ksmbd: fix durable reconnect error path file lifetime
CVE-2026-63857 9.8 CRITICAL net: airoha: Do not read uninitialized fragment address in airoha_dev_xmit()
CVE-2026-64113 9.8 CRITICAL ixgbevf: fix use-after-free in VEPA multicast source pruning
CVE-2026-63825 9.8 CRITICAL gcov: use atomic counter updates to fix concurrent access crashes
CVE-2026-64046 9.8 CRITICAL net: tls: prevent chain-after-chain in plain text SG

Showing top 20 of 429 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-63859

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