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CVE-2026-98481

Unknown

Last modified

CVE-2026-98481 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: nfc: port100: reject frames whose declared length exceeds the received data port100_recv_response() passes the URB transfer buffer to port100_rx_frame_is_valid(), which checksums le16_to_cpu(frame->datalen) bytes of frame->data. datalen is a 16-bit field supplied by the device and is never checked against the number of bytes actually received (urb->actual_length), so a device reporting a datalen larger than the received frame makes port100_data_checksum() read out of bounds past the transfer buffer. Reject a response whose declared frame size does not fit the received length before validating it. Found by 0sec (https://0sec.ai) using automated source analysis; the missing bound is evident from source.

Description

In the Linux kernel, the following vulnerability has been resolved: nfc: port100: reject frames whose declared length exceeds the received data port100_recv_response() passes the URB transfer buffer to port100_rx_frame_is_valid(), which checksums le16_to_cpu(frame->datalen) bytes of frame->data. datalen is a 16-bit field supplied by the device and is never checked against the number of bytes actually received (urb->actual_length), so a device reporting a datalen larger than the received frame makes port100_data_checksum() read out of bounds past the transfer buffer. Reject a response whose declared frame size does not fit the received length before validating it. Found by 0sec (https://0sec.ai) using automated source analysis; the missing bound is evident from source. Compile-tested.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06, < 0d482995f0cdd0302450aa300c684c642d8ab31f; >= 562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06, < 9e8df087826b9999d1b83b06f5d85675d5a69c9e; >= 562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06, < db66a30588630c7de30ef033f00daddef69f6ad9; >= 562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06, < 144ad477c381e2c592b64898d04ab4ce03b32861; >= 562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06, < e4da1452e10c6472a4bac48dc2f6a35fff1fcd69; >= 562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06, < 14b1467cfc6630583650f33538174c5a1ec685ab; >= 562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06, < 035056e07ea65be670284246d9bc62f2f00ff4a3; >= 562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06, < 092c6a605cbd6414ef499834c2e0da69c2c3388e
LinuxLinux3.13

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98481?
In the Linux kernel, the following vulnerability has been resolved: nfc: port100: reject frames whose declared length exceeds the received data port100_recv_response() passes the URB transfer buffer to port100_rx_frame_is_valid(), which checksums le16_to_cpu(frame->datalen) bytes of frame->data. datalen is a 16-bit field supplied by the device and is never checked against the number of bytes actually received (urb->actual_length), so a device reporting a datalen larger than the received frame makes port100_data_checksum() read out of bounds past the transfer buffer. Reject a response whose declared frame size does not fit the received length before validating it. Found by 0sec (https://0sec.ai) using automated source analysis; the missing bound is evident from source. Compile-tested.
How severe is CVE-2026-98481?
Severity scoring for CVE-2026-98481 is pending analysis.
How do I fix CVE-2026-98481?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST