CVE-2026-98582

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98582", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.358Z", "datePublished": "2026-10-18T15:18:55.545Z", "dateUpdated": "2026-10-19T09:22:08.022Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:22:08.022Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: st21nfca: validate received frame size\n\nst21nfca_hci_i2c_repack() trims a received frame at its EOF marker\nbefore removing byte stuffing. It then assumes the truncated frame\ncontains the LLC header and two CRC bytes, and it unconditionally reads\nthe byte after an escape marker.\n\nA malformed frame can place EOF immediately after the start marker or can\nend its data portion with an escape marker. The former leaves too few\nbytes for check_crc(), while the latter makes the unstuffing loop read past\nthe current skb length.\n\nRequire the minimum framing bytes both before and after unstuffing. Use\nseparate input and output cursors while removing byte stuffing, and reject\nan escape marker without its encoded byte. This keeps malformed frames\nwithin the received frame boundary before CRC processing."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nfc/st21nfca/i2c.c"], "versions": [{"version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "lessThan": "8934d2889ae16a7c77520e002398d0689c1ecea5", "status": "affected", "versionType": "git"}, {"version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "lessThan": "d0596ee6c4b928a5c288790522a7495ee867da72", "status": "affected", "versionType": "git"}, {"version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "lessThan": "f526c218a149a30f110ce434ff17e033042404b8", "status": "affected", "versionType": "git"}, {"version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "lessThan": "d4008c3499dba7829bfe002edd99a8bff8ae3a7c", "status": "affected", "versionType": "git"}, {"version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "lessThan": "91be5161f37b0a2795ad6806d69be5fa74522e5c", "status": "affected", "versionType": "git"}, {"version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "lessThan": "57919d0662d8856211b794140172e51ca389f23d", "status": "affected", "versionType": "git"}, {"version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "lessThan": "7b996cc06dda54c02a5aa607bda01109f0ac51e6", "status": "affected", "versionType": "git"}, {"version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "lessThan": "a653c01ce447f10c36b901646888c0330363af4f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nfc/st21nfca/i2c.c"], "versions": [{"version": "3.16", "status": "affected"}, {"version": "0", "lessThan": "3.16", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.55", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.9", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.16", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.16", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.16", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.16", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.16", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.16", "versionEndExcluding": "6.18.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.16", "versionEndExcluding": "7.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.16", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8934d2889ae16a7c77520e002398d0689c1ecea5"}, {"url": "https://git.kernel.org/stable/c/d0596ee6c4b928a5c288790522a7495ee867da72"}, {"url": "https://git.kernel.org/stable/c/f526c218a149a30f110ce434ff17e033042404b8"}, {"url": "https://git.kernel.org/stable/c/d4008c3499dba7829bfe002edd99a8bff8ae3a7c"}, {"url": "https://git.kernel.org/stable/c/91be5161f37b0a2795ad6806d69be5fa74522e5c"}, {"url": "https://git.kernel.org/stable/c/57919d0662d8856211b794140172e51ca389f23d"}, {"url": "https://git.kernel.org/stable/c/7b996cc06dda54c02a5aa607bda01109f0ac51e6"}, {"url": "https://git.kernel.org/stable/c/a653c01ce447f10c36b901646888c0330363af4f"}], "title": "nfc: st21nfca: validate received frame size", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/nfc/st21nfca/i2c.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8934d2889ae16a7c77520e002398d0689c1ecea5", "status": "affected", "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "versionType": "git"}, {"lessThan": "d0596ee6c4b928a5c288790522a7495ee867da72", "status": "affected", "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "versionType": "git"}, {"lessThan": "f526c218a149a30f110ce434ff17e033042404b8", "status": "affected", "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "versionType": "git"}, {"lessThan": "d4008c3499dba7829bfe002edd99a8bff8ae3a7c", "status": "affected", "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "versionType": "git"}, {"lessThan": "91be5161f37b0a2795ad6806d69be5fa74522e5c", "status": "affected", "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "versionType": "git"}, {"lessThan": "57919d0662d8856211b794140172e51ca389f23d", "status": "affected", "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "versionType": "git"}, {"lessThan": "7b996cc06dda54c02a5aa607bda01109f0ac51e6", "status": "affected", "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "versionType": "git"}, {"lessThan": "a653c01ce447f10c36b901646888c0330363af4f", "status": "affected", "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/nfc/st21nfca/i2c.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.16"}, {"lessThan": "3.16", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.55", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: st21nfca: validate received frame size\n\nst21nfca_hci_i2c_repack() trims a received frame at its EOF marker\nbefore removing byte stuffing. It then assumes the truncated frame\ncontains the LLC header and two CRC bytes, and it unconditionally reads\nthe byte after an escape marker.\n\nA malformed frame can place EOF immediately after the start marker or can\nend its data portion with an escape marker. The former leaves too few\nbytes for check_crc(), while the latter makes the unstuffing loop read past\nthe current skb length.\n\nRequire the minimum framing bytes both before and after unstuffing. Use\nseparate input and output cursors while removing byte stuffing, and reject\nan escape marker without its encoded byte. This keeps malformed frames\nwithin the received frame boundary before CRC processing."}], "id": "CVE-2026-98582", "lastModified": "2026-10-19T10:19:18.997", "metrics": {}, "published": "2026-10-18T16:17:10.743", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/57919d0662d8856211b794140172e51ca389f23d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7b996cc06dda54c02a5aa607bda01109f0ac51e6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8934d2889ae16a7c77520e002398d0689c1ecea5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/91be5161f37b0a2795ad6806d69be5fa74522e5c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a653c01ce447f10c36b901646888c0330363af4f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d0596ee6c4b928a5c288790522a7495ee867da72"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d4008c3499dba7829bfe002edd99a8bff8ae3a7c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f526c218a149a30f110ce434ff17e033042404b8"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: nfc: st21nfca: validate received frame size", "id": "2554910", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2554910"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnfc: st21nfca: validate received frame size\nst21nfca_hci_i2c_repack() trims a received frame at its EOF marker\nbefore removing byte stuffing. It then assumes the truncated frame\ncontains the LLC header and two CRC bytes, and it unconditionally reads\nthe byte after an escape marker.\nA malformed frame can place EOF immediately after the start marker or can\nend its data portion with an escape marker. The former leaves too few\nbytes for check_crc(), while the latter makes the unstuffing loop read past\nthe current skb length.\nRequire the minimum framing bytes both before and after unstuffing. Use\nseparate input and output cursors while removing byte stuffing, and reject\nan escape marker without its encoded byte. This keeps malformed frames\nwithin the received frame boundary before CRC processing.", "A flaw was found in the Linux kernel's ST21NFCA Near Field Communication (NFC) driver. The driver fails to properly validate the length of received frames when processing escape sequences. An attacker capable of sending crafted NFC frames could exploit this vulnerability to trigger an out-of-bounds memory read, leading to a system crash and Denial of Service (DoS) or potential kernel memory disclosure."], "name": "CVE-2026-98582", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98582\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98582\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98582.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3096e25a3e40b73afd59e46f3bf8d84f919992a1,8934d2889ae16a7c77520e002398d0689c1ecea5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3096e25a3e40b73afd59e46f3bf8d84f919992a1,d0596ee6c4b928a5c288790522a7495ee867da72)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3096e25a3e40b73afd59e46f3bf8d84f919992a1,f526c218a149a30f110ce434ff17e033042404b8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3096e25a3e40b73afd59e46f3bf8d84f919992a1,d4008c3499dba7829bfe002edd99a8bff8ae3a7c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3096e25a3e40b73afd59e46f3bf8d84f919992a1,91be5161f37b0a2795ad6806d69be5fa74522e5c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3096e25a3e40b73afd59e46f3bf8d84f919992a1,57919d0662d8856211b794140172e51ca389f23d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3096e25a3e40b73afd59e46f3bf8d84f919992a1,7b996cc06dda54c02a5aa607bda01109f0ac51e6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3096e25a3e40b73afd59e46f3bf8d84f919992a1,a653c01ce447f10c36b901646888c0330363af4f)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.16"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.16)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.271,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.222,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.189,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.158,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.55,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.9,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc5,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-18T23:15:14.328229+00:00", "updated": "2026-10-20T19:15:14.400427+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}