CVE-2026-80802

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80802", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.794Z", "datePublished": "2026-09-04T15:13:16.241Z", "dateUpdated": "2026-10-19T08:43:55.498Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:43:55.498Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: fdp: bound the device-reported read length and fix an skb leak\n\nfdp_nci_i2c_read() takes the next packet length from two device-supplied\nbytes and never validates it. The value is a u16 used as the\ni2c_master_recv() count into a 261-byte on-stack buffer: a malicious,\ncounterfeit or malfunctioning controller (or an i2c bus interposer) can\ndrive it far past the buffer for a stack out-of-bounds write that\nclobbers the canary and return address, or below the minimum frame size\n(directly, or by truncating the computed sum) so the header/LRC strip\nand the next length read run past a short receive. Reject a length\noutside [FDP_NCI_I2C_MIN_PAYLOAD, FDP_NCI_I2C_MAX_PAYLOAD], as a\ncorrupted packet already is, and force resynchronization.\n\nThe same loop allocates one data skb per iteration and assumes a length\npacket followed by a data packet; a device that sends two data packets\nin one call leaks the first skb when the second allocation overwrites\nit. Free a previously allocated skb before allocating the next."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nfc/fdp/i2c.c"], "versions": [{"version": "a06347c04c13e380afce0c9816df51f00b83faf1", "lessThan": "d9498ab9a78cb63d78dbe4f221d8cc6c91f285ee", "status": "affected", "versionType": "git"}, {"version": "a06347c04c13e380afce0c9816df51f00b83faf1", "lessThan": "1fc32327b927a6e2cde086f82575c29880844228", "status": "affected", "versionType": "git"}, {"version": "a06347c04c13e380afce0c9816df51f00b83faf1", "lessThan": "8d2c243b79854628ff076c38748c020042f02f57", "status": "affected", "versionType": "git"}, {"version": "a06347c04c13e380afce0c9816df51f00b83faf1", "lessThan": "fc3c2bd5b1ec6c7cbc8a50e32d9bcec114f25463", "status": "affected", "versionType": "git"}, {"version": "a06347c04c13e380afce0c9816df51f00b83faf1", "lessThan": "0d723090645b82c1cb27cfd7ebf81f0e7c96bcae", "status": "affected", "versionType": "git"}, {"version": "a06347c04c13e380afce0c9816df51f00b83faf1", "lessThan": "db7e464b350969c6ea8340de00d9796e5fd5123b", "status": "affected", "versionType": "git"}, {"version": "a06347c04c13e380afce0c9816df51f00b83faf1", "lessThan": "e5eec121f2c3bc4c7022613bedd9121a8aa4c949", "status": "affected", "versionType": "git"}, {"version": "a06347c04c13e380afce0c9816df51f00b83faf1", "lessThan": "1aa3fc769b0c45bd19f8dab1697084c2b3f6d706", "status": "affected", "versionType": "git"}, {"version": "a06347c04c13e380afce0c9816df51f00b83faf1", "lessThan": "7ad21dcfeb5181af0c3ee2608808c0c0a5283aa1", "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/fdp/i2c.c"], "versions": [{"version": "4.4", "status": "affected"}, {"version": "0", "lessThan": "4.4", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.267", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.218", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.185", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.154", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.106", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.47", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.11", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.1", "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": "4.4", "versionEndExcluding": "5.10.267"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "5.15.218"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.1.185"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.6.154"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.12.106"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.18.47"}, {"vulnerable": true, "criteria": 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"https://git.kernel.org/stable/c/e5eec121f2c3bc4c7022613bedd9121a8aa4c949"}, {"url": "https://git.kernel.org/stable/c/1aa3fc769b0c45bd19f8dab1697084c2b3f6d706"}, {"url": "https://git.kernel.org/stable/c/7ad21dcfeb5181af0c3ee2608808c0c0a5283aa1"}], "title": "nfc: fdp: bound the device-reported read length and fix an skb leak", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/nfc/fdp/i2c.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d9498ab9a78cb63d78dbe4f221d8cc6c91f285ee", "status": "affected", "version": "a06347c04c13e380afce0c9816df51f00b83faf1", "versionType": "git"}, {"lessThan": "1fc32327b927a6e2cde086f82575c29880844228", "status": "affected", "version": "a06347c04c13e380afce0c9816df51f00b83faf1", "versionType": "git"}, {"lessThan": "8d2c243b79854628ff076c38748c020042f02f57", "status": "affected", "version": "a06347c04c13e380afce0c9816df51f00b83faf1", "versionType": "git"}, {"lessThan": "fc3c2bd5b1ec6c7cbc8a50e32d9bcec114f25463", "status": "affected", "version": "a06347c04c13e380afce0c9816df51f00b83faf1", "versionType": "git"}, {"lessThan": "0d723090645b82c1cb27cfd7ebf81f0e7c96bcae", "status": "affected", "version": "a06347c04c13e380afce0c9816df51f00b83faf1", "versionType": "git"}, {"lessThan": "db7e464b350969c6ea8340de00d9796e5fd5123b", "status": "affected", "version": "a06347c04c13e380afce0c9816df51f00b83faf1", "versionType": "git"}, {"lessThan": "e5eec121f2c3bc4c7022613bedd9121a8aa4c949", "status": "affected", "version": "a06347c04c13e380afce0c9816df51f00b83faf1", "versionType": "git"}, {"lessThan": "1aa3fc769b0c45bd19f8dab1697084c2b3f6d706", "status": "affected", "version": "a06347c04c13e380afce0c9816df51f00b83faf1", "versionType": "git"}, {"lessThan": "7ad21dcfeb5181af0c3ee2608808c0c0a5283aa1", "status": "affected", "version": "a06347c04c13e380afce0c9816df51f00b83faf1", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/nfc/fdp/i2c.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.4"}, {"lessThan": "4.4", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.267", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.218", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.185", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.154", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.106", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.47", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.11", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.1", "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: fdp: bound the device-reported read length and fix an skb leak\n\nfdp_nci_i2c_read() takes the next packet length from two device-supplied\nbytes and never validates it. The value is a u16 used as the\ni2c_master_recv() count into a 261-byte on-stack buffer: a malicious,\ncounterfeit or malfunctioning controller (or an i2c bus interposer) can\ndrive it far past the buffer for a stack out-of-bounds write that\nclobbers the canary and return address, or below the minimum frame size\n(directly, or by truncating the computed sum) so the header/LRC strip\nand the next length read run past a short receive. Reject a length\noutside [FDP_NCI_I2C_MIN_PAYLOAD, FDP_NCI_I2C_MAX_PAYLOAD], as a\ncorrupted packet already is, and force resynchronization.\n\nThe same loop allocates one data skb per iteration and assumes a length\npacket followed by a data packet; a device that sends two data packets\nin one call leaks the first skb when the second allocation overwrites\nit. Free a previously allocated skb before allocating the next."}], "id": "CVE-2026-80802", "lastModified": "2026-10-19T09:17:14.740", "metrics": {}, "published": "2026-09-04T16:18:07.103", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0d723090645b82c1cb27cfd7ebf81f0e7c96bcae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1aa3fc769b0c45bd19f8dab1697084c2b3f6d706"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1fc32327b927a6e2cde086f82575c29880844228"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7ad21dcfeb5181af0c3ee2608808c0c0a5283aa1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8d2c243b79854628ff076c38748c020042f02f57"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d9498ab9a78cb63d78dbe4f221d8cc6c91f285ee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/db7e464b350969c6ea8340de00d9796e5fd5123b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e5eec121f2c3bc4c7022613bedd9121a8aa4c949"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fc3c2bd5b1ec6c7cbc8a50e32d9bcec114f25463"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a06347c04c13e380afce0c9816df51f00b83faf1,d9498ab9a78cb63d78dbe4f221d8cc6c91f285ee)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a06347c04c13e380afce0c9816df51f00b83faf1,1fc32327b927a6e2cde086f82575c29880844228)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a06347c04c13e380afce0c9816df51f00b83faf1,8d2c243b79854628ff076c38748c020042f02f57)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a06347c04c13e380afce0c9816df51f00b83faf1,fc3c2bd5b1ec6c7cbc8a50e32d9bcec114f25463)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a06347c04c13e380afce0c9816df51f00b83faf1,0d723090645b82c1cb27cfd7ebf81f0e7c96bcae)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a06347c04c13e380afce0c9816df51f00b83faf1,db7e464b350969c6ea8340de00d9796e5fd5123b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a06347c04c13e380afce0c9816df51f00b83faf1,e5eec121f2c3bc4c7022613bedd9121a8aa4c949)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a06347c04c13e380afce0c9816df51f00b83faf1,1aa3fc769b0c45bd19f8dab1697084c2b3f6d706)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a06347c04c13e380afce0c9816df51f00b83faf1,7ad21dcfeb5181af0c3ee2608808c0c0a5283aa1)"}}], "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": "4.4"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,4.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.267,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.218,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.185,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.154,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.106,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.47,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.11,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.1,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc1,*]"}}], "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": "2026-09-04T19:15:07.416177+00:00", "updated": "2026-09-04T21:45:17.570183+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-119", "CWE-401"]}