CVE-2026-45939
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().
Affected versions
Linux kernel versions
6.13
and later are affected. Fixed in
6.18.14,
6.19.4,
7.0
and their respective stable series.
References
The following references provide additional information about CVE-2026-45939 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/9c97fcfb7a62dea893104a046d544da8ac23370b
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PatchKernel patch commithttps://git.kernel.org/stable/c/b89921eed8cf2d97250bac4be38dbcfbf048b586
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PatchKernel patch commithttps://git.kernel.org/stable/c/c899d4b62c0757a280831e89c1f3801b597e8f38
Frequently asked questions
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What is CVE-2026-45939?
CVE-2026-45939 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.13 onward and has been patched in 6.18.14, 6.19.4 and 7.0. CVE-2026-45939 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-45939?
Yes — CVE-2026-45939 has been patched. Fixed versions include 6.18.14, 6.19.4 and 7.0. If you are running Linux kernel 6.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-45939 actively exploited?
No — CVE-2026-45939 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.