CVE-2026-98583
Published Oct 18, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: nfc: nfcmrvl: validate helper command length before pull The firmware download receive path removes the NCI data header and reads the helper command before validating the remaining packet length. A short frame can therefore reach the data access before the malformed packet is rejected. Validate the complete helper command length before stripping the NCI data header.
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References
Other References
https://git.kernel.org/stable/c/4d4601e182c8567329be7d919669ec4d847ddd93
https://git.kernel.org/stable/c/686f942332b1667f13f3b8d6a2f50bcfbf42e277
https://git.kernel.org/stable/c/6a17a5806e9fcd99cf0dd30c3e6301f2aa1fac3c
https://git.kernel.org/stable/c/842c0603cfa49530ef081f181a2ddbba77a37231
https://git.kernel.org/stable/c/a4e56f57dd04d8f9bc6bc55f90f3d129da759ec9
https://git.kernel.org/stable/c/e4b012240c8aaf57cec192234c24e0db5f531ffa
https://git.kernel.org/stable/c/ed2e00bb22c73156bf8030b6204deabb25cf4eb5
https://git.kernel.org/stable/c/f15ad9d6e9173a037587dded77c904fdae8df380
Frequently Asked Questions
What is CVE-2026-98583? +
In the Linux kernel, the following vulnerability has been resolved:
nfc: nfcmrvl: validate helper command length before pull
The firmware download receive path removes the NCI data header and
reads the helper command before validating the remaining packet length.
A short frame can therefore reach the data access before the malformed
packet is rejected.
Validate the complete helper command length before stripping the NCI
data header.
How do I check if I'm vulnerable to CVE-2026-98583? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.