Answer in brief
CVE-2026-98582 records a Unknown severity vulnerability in nfc: st21nfca: validate received frame size. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=3096e25a3e40b73afd59e46f3bf8d84f919992a1 <8934d2889ae16a7c77520e002398d0689c1ecea5 || >=3096e25a3e40b73afd59e46f3bf8d84f919992a1 <d0596ee6c4b928a5c288790522a7495ee867da72 || >=3096e25a3e40b73afd59e46f3bf8d84f919992a1 <f526c218a149a30f110ce434ff17e033042404b8 || >=3096e25a3e40b73afd59e46f3bf8d84f919992a1 <d4008c3499dba7829bfe002edd99a8bff8ae3a7c || >=3096e25a3e40b73afd59e46f3bf8d84f919992a1 <91be5161f37b0a2795ad6806d69be5fa74522e5c || >=3096e25a3e40b73afd59e46f3bf8d84f919992a1 <57919d0662d8856211b794140172e51ca389f23d || >=3096e25a3e40b73afd59e46f3bf8d84f919992a1 <7b996cc06dda54c02a5aa607bda01109f0ac51e6 || >=3096e25a3e40b73afd59e46f3bf8d84f919992a1 <a653c01ce447f10c36b901646888c0330363af4f | 8934d2889ae16a7c77520e002398d0689c1ecea5, d0596ee6c4b928a5c288790522a7495ee867da72, f526c218a149a30f110ce434ff17e033042404b8, d4008c3499dba7829bfe002edd99a8bff8ae3a7c, 91be5161f37b0a2795ad6806d69be5fa74522e5c, 57919d0662d8856211b794140172e51ca389f23d, 7b996cc06dda54c02a5aa607bda01109f0ac51e6, a653c01ce447f10c36b901646888c0330363af4f |
| Linux/Linuxgeneric | 3.16 | Not reported |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
In the Linux kernel, the following vulnerability has been resolved: nfc: st21nfca: validate received frame size st21nfca_hci_i2c_repack() trims a received frame at its EOF marker before removing byte stuffing. It then assumes the truncated frame contains the LLC header and two CRC bytes, and it unconditionally reads the byte after an escape marker. A malformed frame can place EOF immediately after the start marker or can end its data portion with an escape marker. The former leaves too few bytes for check_crc(), while the latter makes the unstuffing loop read past the current skb length. Require the minimum framing bytes both before and after unstuffing. Use separate input and output cursors while removing byte stuffing, and reject an escape marker without its encoded byte. This keeps malformed frames within the received frame boundary before CRC processing.
Quoted source text, attributed separately from HOL analysis.