CVE-2026-98582 (GCVE-0-2026-98582)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:18 – Updated: 2026-10-19 09:22
VLAI
Title
nfc: st21nfca: validate received frame size
Summary
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6641 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3096e25a3e40b73afd59e46f3bf8d84f919992a1 , < 8934d2889ae16a7c77520e002398d0689c1ecea5 (git)
Affected: 3096e25a3e40b73afd59e46f3bf8d84f919992a1 , < d0596ee6c4b928a5c288790522a7495ee867da72 (git)
Affected: 3096e25a3e40b73afd59e46f3bf8d84f919992a1 , < f526c218a149a30f110ce434ff17e033042404b8 (git)
Affected: 3096e25a3e40b73afd59e46f3bf8d84f919992a1 , < d4008c3499dba7829bfe002edd99a8bff8ae3a7c (git)
Affected: 3096e25a3e40b73afd59e46f3bf8d84f919992a1 , < 91be5161f37b0a2795ad6806d69be5fa74522e5c (git)
Affected: 3096e25a3e40b73afd59e46f3bf8d84f919992a1 , < 57919d0662d8856211b794140172e51ca389f23d (git)
Affected: 3096e25a3e40b73afd59e46f3bf8d84f919992a1 , < 7b996cc06dda54c02a5aa607bda01109f0ac51e6 (git)
Affected: 3096e25a3e40b73afd59e46f3bf8d84f919992a1 , < a653c01ce447f10c36b901646888c0330363af4f (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.16
Unaffected: 0 , < 3.16 (semver)
Unaffected: 5.10.271 , ≤ 5.10.* (semver)
Unaffected: 5.15.222 , ≤ 5.15.* (semver)
Unaffected: 6.1.189 , ≤ 6.1.* (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.55 , ≤ 6.18.* (semver)
Unaffected: 7.2.9 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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        }
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      "providerMetadata": {
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        "shortName": "Linux"
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    "datePublished": "2026-10-18T15:18:55.545Z",
    "dateReserved": "2026-09-25T10:25:14.358Z",
    "dateUpdated": "2026-10-19T09:22:08.022Z",
    "state": "PUBLISHED"
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          }
        ],
        "id": "CVE-2026-98582",
        "lastModified": "2026-10-19T10:19:18.997",
        "metrics": {},
        "published": "2026-10-18T16:17:10.743",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nfc: st21nfca: validate received frame size",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98582.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-11-12T00:47:31Z",
      "cve": "CVE-2026-98582",
      "id": "CVE-2026-98582",
      "initial_release_date": "2026-10-19T23:49:24Z",
      "product_status:known_affected": "661",
      "product_status:known_not_affected": "52",
      "product_status:recommended": "149",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98582",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98582.json",
      "version": "11"
    }
  }
}



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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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