Linux Kernel up to 7.2-rc4 dpaa2-switch mc_dev memory leak

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$0-$5k0.00-

Summaryinfo

A vulnerability classified as very critical has been found in Linux Kernel up to 6.6.147/6.12.100/6.18.41/7.1.5/7.2-rc4. This impacts an unknown function of the component dpaa2-switch. This manipulation of the argument mc_dev causes memory leak. This vulnerability is registered as CVE-2026-68333. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.6.147/6.12.100/6.18.41/7.1.5/7.2-rc4 and classified as very critical. Affected by this vulnerability is some unknown processing of the component dpaa2-switch. The manipulation of the argument mc_dev with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: put MAC endpoint device on disconnect fsl_mc_get_endpoint() returns the MAC endpoint device with a reference taken through device_find_child(). The switch port connect path stores that device in mac->mc_dev and keeps it for the lifetime of the connected MAC object. However, the disconnect path only closes the MAC and frees the dpaa2_mac object. It does not drop the endpoint device reference stored in mac->mc_dev, so every successful connect leaks that device reference when the MAC is later disconnected. Drop the endpoint device reference before freeing the dpaa2_mac object.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-68333 since 07/30/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/10/2026). The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 6.6.148, 6.12.101, 6.18.42, 7.1.6 or 7.2-rc5 eliminates this vulnerability. Applying the patch 1f4ca61b7a93de3dfa5161bcd38ecb99bb091c38/680eecc850d36a280df9780496bc603fec17b2d6/26ac2d3602347f0377fbcd5214bc28a9d735ae68/c27694ff6748e08fcd2fdba89018439d75b8198f/4c1eabbef7a1707635652e956e39db1269c3af2b is able to eliminate this problem.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.5

VulDB Base Score: 9.9
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.148/6.12.101/6.18.42/7.1.6/7.2-rc5
Patch: 1f4ca61b7a93de3dfa5161bcd38ecb99bb091c38/680eecc850d36a280df9780496bc603fec17b2d6/26ac2d3602347f0377fbcd5214bc28a9d735ae68/c27694ff6748e08fcd2fdba89018439d75b8198f/4c1eabbef7a1707635652e956e39db1269c3af2b

Timelineinfo

07/30/2026 CVE reserved
08/10/2026 +11 days Advisory disclosed
08/10/2026 +0 days VulDB entry created
08/10/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-68333 (🔒)
GCVE (CVE): GCVE-0-2026-68333
GCVE (VulDB): GCVE-100-387715

Entryinfo

Created: 08/10/2026 17:59
Changes: 08/10/2026 17:59 (59)
Complete: 🔍
Cache ID: 216::103

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