VulnerabilityPublished 19 Jul 2026Updated 21 Oct 2026

CVE-2026-63859: Linux kernel · net: airoha: Add missing bits in airoha_qdma_cleanup_tx_queue()

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in c0cfce4d76702dba9601a4020df1a0bc35806efc : update Linux kernel when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in c0cfce4d76702dba9601a4020df1a0bc35806efc, 3309965fe44c00fd65af7cef5016e9e782c021a7, 9b5d56fe389d68ede080c716e6f10895facaf7db +1

Exploitation evidence

Disclosed: evidence found.
CVE published 19 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to c0cfce4d76702dba9601a4020df1a0bc35806efc, 3309965fe44c00fd65af7cef5016e9e782c021a7, 9b5d56fe389d68ede080c716e6f10895facaf7db or 7b86b4c7767e932f59cd23b31587b73a03cb1dfc.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 23020f04932701d5c8363e60756f12b43b8ed752, < c0cfce4d76702dba9601a4020df1a0bc35806efc	Fixed in c0cfce4d76702dba9601a4020df1a0bc35806efc
LinuxLinux	Affected ≥ 23020f04932701d5c8363e60756f12b43b8ed752, < 3309965fe44c00fd65af7cef5016e9e782c021a7	Fixed in 3309965fe44c00fd65af7cef5016e9e782c021a7
LinuxLinux	Affected ≥ 23020f04932701d5c8363e60756f12b43b8ed752, < 9b5d56fe389d68ede080c716e6f10895facaf7db	Fixed in 9b5d56fe389d68ede080c716e6f10895facaf7db
LinuxLinux	Affected ≥ 23020f04932701d5c8363e60756f12b43b8ed752, < 7b86b4c7767e932f59cd23b31587b73a03cb1dfc	Fixed in 7b86b4c7767e932f59cd23b31587b73a03cb1dfc
LinuxLinux	Affected =6.11	Fixed in–

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.

References

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