CVE-2026-45939
gpib: Fix memory leak in ni_usb_init()
Description
In the Linux kernel, the following vulnerability has been resolved: gpib: Fix memory leak in ni_usb_init() In ni_usb_init(), if ni_usb_setup_init() fails, the function returns -EFAULT without freeing the allocated writes buffer, leading to a memory leak. Additionally, ni_usb_setup_init() returns 0 on failure, which causes ni_usb_init() to return -EFAULT, an inappropriate error code for this situation. Fix the leak by freeing writes in the error path. Modify ni_usb_setup_init() to return -EINVAL on failure and propagate this error code in ni_usb_init().
INFO
Published Date :
May 27, 2026, 2:17 p.m.
Last Modified :
June 24, 2026, 5:09 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Free writes buffer in ni_usb_init error path.
- Return -EINVAL from ni_usb_setup_init on failure.
- Propagate error code in ni_usb_init.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-45939.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45939 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45939
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-45939 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45939 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 24, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 6.19.4 Added Reference Type kernel.org: https://git.kernel.org/stable/c/9c97fcfb7a62dea893104a046d544da8ac23370b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b89921eed8cf2d97250bac4be38dbcfbf048b586 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c899d4b62c0757a280831e89c1f3801b597e8f38 Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4e127de14fa78bcd98c6459b0b984b8266cd0203', 'lessThan': '9c97fcfb7a62dea893104a046d544da8ac23370b', 'versionType': 'git'}, {'status': 'affected', 'version': '4e127de14fa78bcd98c6459b0b984b8266cd0203', 'lessThan': 'c899d4b62c0757a280831e89c1f3801b597e8f38', 'versionType': 'git'}, {'status': 'affected', 'version': '4e127de14fa78bcd98c6459b0b984b8266cd0203', 'lessThan': 'b89921eed8cf2d97250bac4be38dbcfbf048b586', 'versionType': 'git'}], 'programFiles': ['drivers/gpib/ni_usb/ni_usb_gpib.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.13', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.14', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '6.19.4', 'versionType': 'semver', 'lessThanOrEqual': '6.19.*'}, {'status': 'unaffected', 'version': '7.0', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpib/ni_usb/ni_usb_gpib.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 27, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: gpib: Fix memory leak in ni_usb_init() In ni_usb_init(), if ni_usb_setup_init() fails, the function returns -EFAULT without freeing the allocated writes buffer, leading to a memory leak. Additionally, ni_usb_setup_init() returns 0 on failure, which causes ni_usb_init() to return -EFAULT, an inappropriate error code for this situation. Fix the leak by freeing writes in the error path. Modify ni_usb_setup_init() to return -EINVAL on failure and propagate this error code in ni_usb_init(). Added Reference https://git.kernel.org/stable/c/9c97fcfb7a62dea893104a046d544da8ac23370b Added Reference https://git.kernel.org/stable/c/b89921eed8cf2d97250bac4be38dbcfbf048b586 Added Reference https://git.kernel.org/stable/c/c899d4b62c0757a280831e89c1f3801b597e8f38