CVE-2026-53229VulnerabilityPublished 27 Jun 2026Updated 24 Sep 2026

Microsoft · net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-53229· High 7.5

Not known to be exploited · CVSS 7.5 High · fixed in b69004f5a6ad32da84d8aa5b23b9c0caafe6252e : patch Microsoft soon.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 38% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in b69004f5a6ad32da84d8aa5b23b9c0caafe6252e, 2789b74ae1f4b68333c9d5eec2f3354d07b16e61, 7b3eeba50fbc3b45f279037c29a87a90e8bac1e1 +2

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 29 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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.

microsoft-security-response-ce

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 84a0a2310d6de247335574649726cb000c7c0074, < b69004f5a6ad32da84d8aa5b23b9c0caafe6252e	Fixed in b69004f5a6ad32da84d8aa5b23b9c0caafe6252e
LinuxLinux	Affected ≥ 84a0a2310d6de247335574649726cb000c7c0074, < 2789b74ae1f4b68333c9d5eec2f3354d07b16e61	Fixed in 2789b74ae1f4b68333c9d5eec2f3354d07b16e61
LinuxLinux	Affected ≥ 84a0a2310d6de247335574649726cb000c7c0074, < 7b3eeba50fbc3b45f279037c29a87a90e8bac1e1	Fixed in 7b3eeba50fbc3b45f279037c29a87a90e8bac1e1
LinuxLinux	Affected ≥ 84a0a2310d6de247335574649726cb000c7c0074, < 3bad189a31eb78575ea69f093e8ef5b7e3e8c832	Fixed in 3bad189a31eb78575ea69f093e8ef5b7e3e8c832
LinuxLinux	Affected ≥ 84a0a2310d6de247335574649726cb000c7c0074, < 0aabca726b43d833721034e97d99efcc8237b22a	Fixed in 0aabca726b43d833721034e97d99efcc8237b22a
LinuxLinux	Affected =5.3	Fixed in–

Description

CVE-2026-53229 addresses a vulnerability in the net/mlx5e driver related to XDP_TX transmit failures, where DMA and xdp_frame resources may leak. The issue affects version 3.0 of the product. No CVSS score or detailed impact information is provided. No known exploits are reported in the wild.

Impact

The vulnerability may cause resource leaks (DMA and xdp_frame) during XDP_TX transmit failures, potentially leading to degraded system performance or resource exhaustion over time. No direct evidence of exploitation or additional impact is provided.

Summary

This vulnerability concerns a resource leak in the net/mlx5e driver component, specifically involving DMA and xdp_frame leaks on XDP_TX transmit failure. The affected product version is 3.0. The vulnerability was reported by the Microsoft Security Response Center. No further technical details or exploitation methods are described in the provided data.

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Affected software

Description

AI analysisMachine-generated, updated 29 Jun 2026, 22:46 UTC

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