What’s Vulnerable › Vulnerabilities

CVE-2026-98583: nfc: nfcmrvl: validate helper command length before pull

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-18 · updated 2026-10-19

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.

Affected products

• Linux kernel: 4.4 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

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

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