307 lines
15 KiB
JSON
307 lines
15 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-80799",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-08-26T14:34:25.793Z",
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"datePublished": "2026-09-04T15:13:13.311Z",
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"dateUpdated": "2026-10-19T08:43:52.451Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T08:43:52.451Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: fix OOB read and u8 offset wrap in TLV parsers\n\nnfc_llcp_parse_gb_tlv() and nfc_llcp_parse_connection_tlv() contain\nthree related bugs in their TLV parsing loops:\n\n1. 'offset' is declared u8 but tlv_array_len is u16. When TLV data\n advances offset past 255 it silently wraps to zero, causing\n infinite loops or double-processing of buffer data.\n\n2. Before reading tlv[0] (type) and tlv[1] (length) there is no\n check that offset+2 <= tlv_array_len. A truncated TLV causes\n an OOB read of one byte past the buffer end.\n\n3. After reading the length field, the value bytes are accessed\n without checking offset+2+length <= tlv_array_len. A crafted\n length=0xFF on a short buffer causes up to 255 bytes of OOB\n read past the buffer end.\n\nBoth functions are reachable without authentication via\nnfc_llcp_set_remote_gb() which feeds remote LLCP general bytes\ndirectly into nfc_llcp_parse_gb_tlv() with no additional\nvalidation.\n\nFix all three issues by widening offset from u8 to u16 and adding\nbounds checks for both the TLV header and value field before each\naccess."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/nfc/llcp_commands.c"
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],
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"versions": [
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{
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"version": "0be9de2ea01e8d52646e7310a7eef5459cf07ea8",
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"lessThan": "2c1456fe09ab1a5a9fe1d8339ca6d509589b56e1",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3df40eb3a2ea58bf404a38f15a7a2768e4762cb0",
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"lessThan": "7f6f3d087c67a4346189ef2c36481455bbc59a74",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3df40eb3a2ea58bf404a38f15a7a2768e4762cb0",
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"lessThan": "9c47d667963542c3cf8e3007b7f10c0904d08238",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3df40eb3a2ea58bf404a38f15a7a2768e4762cb0",
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"lessThan": "a209334ed929941b20810c17c3a507445b0a7c85",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3df40eb3a2ea58bf404a38f15a7a2768e4762cb0",
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"lessThan": "382eaa770335acf4f16a5a55524500f2bb4207df",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3df40eb3a2ea58bf404a38f15a7a2768e4762cb0",
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"lessThan": "2d239590d1845a706304833d40dd6d4fec20ad88",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3df40eb3a2ea58bf404a38f15a7a2768e4762cb0",
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"lessThan": "e84cdfdc4a6c88e8b751144458f2e04e24415a28",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3df40eb3a2ea58bf404a38f15a7a2768e4762cb0",
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"lessThan": "875285a165fd3b402de2ab3be0deb355d6f4caf5",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3df40eb3a2ea58bf404a38f15a7a2768e4762cb0",
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"lessThan": "78b20c8eeacd2e44a2d8a4cb5316d3c521d90911",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1deacb5e031e289ca5636f2db4fcae6612c05d34",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "66a1be74230bbe098e651766c9a0cf4038db8442",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "5.10.188",
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"lessThan": "5.10.267",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "4.19.291",
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"lessThan": "4.20",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.4.251",
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"lessThan": "5.5",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/nfc/llcp_commands.c"
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],
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"versions": [
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{
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"version": "5.15",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.15",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.267",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.218",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.185",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.154",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.106",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.47",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.11",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.1",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.10.188",
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"versionEndExcluding": "5.10.267"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "5.15.218"
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},
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"versionStartIncluding": "5.15",
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.19.291"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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]
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/2c1456fe09ab1a5a9fe1d8339ca6d509589b56e1"
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},
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{
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"url": "https://git.kernel.org/stable/c/7f6f3d087c67a4346189ef2c36481455bbc59a74"
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},
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{
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"url": "https://git.kernel.org/stable/c/9c47d667963542c3cf8e3007b7f10c0904d08238"
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},
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{
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"url": "https://git.kernel.org/stable/c/a209334ed929941b20810c17c3a507445b0a7c85"
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},
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{
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"url": "https://git.kernel.org/stable/c/382eaa770335acf4f16a5a55524500f2bb4207df"
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},
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{
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"url": "https://git.kernel.org/stable/c/2d239590d1845a706304833d40dd6d4fec20ad88"
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},
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{
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"url": "https://git.kernel.org/stable/c/e84cdfdc4a6c88e8b751144458f2e04e24415a28"
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},
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{
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"url": "https://git.kernel.org/stable/c/875285a165fd3b402de2ab3be0deb355d6f4caf5"
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},
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{
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"url": "https://git.kernel.org/stable/c/78b20c8eeacd2e44a2d8a4cb5316d3c521d90911"
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}
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],
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"title": "nfc: llcp: fix OOB read and u8 offset wrap in TLV parsers",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |