CVE-2026-23058
Vulnerability Scoring
Analysis In Progress
CVE-2026-23058 Vulnerability Analysis & Exploit Details
CVE-2026-23058
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2026-23058 Details
Status: Awaiting Analysis
Last updated: 🕔 06 Feb 2026, 17:16 UTC
Originally published on: 🕔 04 Feb 2026, 17:16 UTC
Time between publication and last update: 2 days
CVSS Release:
CVE-2026-23058 Vulnerability Summary
CVE-2026-23058: In the Linux kernel, the following vulnerability has been resolved: can: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak Fix similar memory leak as in commit 7352e1d5932a ("can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak"). In ems_usb_open(), the URBs for USB-in transfers are allocated, added to the dev->rx_submitted anchor and submitted. In the complete callback ems_usb_read_bulk_callback(), the URBs are processed and resubmitted. In ems_usb_close() the URBs are freed by calling usb_kill_anchored_urbs(&dev->rx_submitted). However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in ems_usb_close(). Fix the memory leak by anchoring the URB in the ems_usb_read_bulk_callback() to the dev->rx_submitted anchor.
Assessing the Risk of CVE-2026-23058
Access Complexity Graph
The exploitability of CVE-2026-23058 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2026-23058
No exploitability data is available for CVE-2026-23058.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2026-23058, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2026-23058, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2026-23058 does not compromise confidentiality.
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Integrity:
None
CVE-2026-23058 does not impact data integrity.
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Availability:
None
CVE-2026-23058 does not affect system availability.
CVE-2026-23058 References
External References
- https://git.kernel.org/stable/c/0ce73a0eb5a27070957b67fd74059b6da89cc516
- https://git.kernel.org/stable/c/46a191ff7eeec33a2ccb2a1bfea34e18fbc5dc1a
- https://git.kernel.org/stable/c/61e6d3674c3d1da1475dc207b3e75c55d678d18e
- https://git.kernel.org/stable/c/68c62b3e53901846b5f68c5a8bade72a5d9c0b87
- https://git.kernel.org/stable/c/e2c71030dc464d437110bcfb367c493fd402bddb
- https://git.kernel.org/stable/c/e9410fdd4d5f7eaa6526d8c80e83029d7c86a8e8
- https://git.kernel.org/stable/c/f48eabd15194b216030b32445f44230df95f5fe0
CWE Common Weakness Enumeration
Unknown
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