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CVE Record

CVE-2025-68765: mt76: mt7615: Fix memory leak in mt7615_mcu_wtbl_sta_add()

In the Linux kernel, the following vulnerability has been resolved: mt76: mt7615: Fix memory leak in mt7615_mcu_wtbl_sta_add() In mt7615_mcu_wtbl_sta_add(), an skb sskb is allocated. If the subsequent call to mt76_connac_mcu_alloc_wtbl_req() fails, the function returns an error without freeing sskb, leading to a memory leak. Fix this by calling dev_kfree_skb() on sskb in the error handling path to ensure it is properly released.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

This CVE is a Linux kernel memory leak in the mt76 mt7615 wireless driver. If an internal allocation path fails, allocated network buffer memory is not released. The main business risk is local availability degradation on systems using the affected MediaTek wireless driver, not confirmed remote compromise.

Executive priority

Handle through normal kernel patch management, with higher priority for fleets using MediaTek mt7615 wireless hardware. Current sources do not support emergency response or internet-wide exploitation claims.

Technical view

In mt7615_mcu_wtbl_sta_add(), an skb named sskb is allocated. If mt76_connac_mcu_alloc_wtbl_req() fails afterward, the error path returns without freeing sskb. Kernel stable fixes add dev_kfree_skb() on that failure path.

Likely exposure

Exposure appears limited to Linux systems running affected kernels with the mt76 mt7615 MediaTek wireless driver in use. Servers without this driver or hardware are less likely to be exposed.

Exploitation context

The bundle does not report active exploitation, KEV listing, public exploit code, CVSS, or a confirmed attacker-controlled trigger. Treat exploitation evidence as incomplete and availability-focused.

Researcher notes

The evidence describes a single error-path leak in a Linux wireless driver. No CWE, CVSS vector, exploitability analysis, or attacker preconditions are supplied, so validation should focus on code presence, backports, and driver usage.

Mitigation direction

  • Update to a kernel or vendor package containing the referenced stable fix.
  • Prioritize Linux endpoints, appliances, or embedded devices using mt76 mt7615 wireless hardware.
  • Check distribution security advisories for backported fixes and package names.
  • Where patching is delayed, reduce exposure of affected wireless functionality if operationally acceptable.

Validation and detection

  • Inventory Linux kernel versions and systems using the mt76 or mt7615 driver.
  • Verify the running kernel package includes one of the referenced stable commits.
  • Confirm vendor advisories classify the installed package as fixed or unaffected.
  • Monitor affected systems for unusual kernel memory growth until patched.
Prepared
Confidence
medium
Sources
9

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

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CVE-2025-68765 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
0ADP providers
8Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux99c457d902cf90bdc0df5d57e6156ec108711068, 99c457d902cf90bdc0df5d57e6156ec108711068, 99c457d902cf90bdc0df5d57e6156ec108711068, 99c457d902cf90bdc0df5d57e6156ec108711068, 99c457d902cf90bdc0df5d57e6156ec108711068, 99c457d902cf90bdc0df5d57e6156ec108711068, 99c457d902cf90bdc0df5d57e6156ec108711068unaffected
LinuxLinux5.7, 0, 5.15.198, 6.1.160, 6.6.120, 6.12.63, 6.17.13, 6.18.2, 6.19affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.