{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-98483", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.352Z", "datePublished": "2026-10-18T15:15:57.275Z", "dateUpdated": "2026-10-19T09:20:20.665Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:20:20.665Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: fix use-after-free in nfc_get_local_general_bytes\n\nCommit 6709d4b7bc2e (\"net: nfc: Fix use-after-free caused by\nnfc_llcp_find_local\") attempted to fix a use-after-free (UAF) issue by\ninvoking nfc_llcp_local_put(local) after accessing local->gb. However,\nif the reference count drops to zero, local is freed immediately,\nleading to a use-after-free when callers access the returned pointer.\nAlternative approaches using dynamic allocation (e.g. kmemdup) introduced\nmemory leaks because callers consistently treat the returned pointer as\nborrowed memory.\n\nFix this properly by refactoring nfc_llcp_general_bytes() and\nnfc_get_local_general_bytes() to accept a caller-provided output buffer\n(out_gb) and its maximum length (gb_max_len). The general bytes are\nsafely copied into out_gb before calling nfc_llcp_local_put(local),\nensuring safe lifetime management without ownership transfer complications.\n\nUpdate all callers across drivers (microread, pn533, pn544, st21nfca,\ndigital_dep, and nci) to provide their own destination buffers and pass\nthem to nfc_get_local_general_bytes()." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/nfc/microread/microread.c", "drivers/nfc/pn533/pn533.c", "drivers/nfc/pn533/pn533.h", "drivers/nfc/pn544/pn544.c", "drivers/nfc/st21nfca/core.c", "include/net/nfc/hci.h", "include/net/nfc/nfc.h", "net/nfc/core.c", "net/nfc/digital_dep.c", "net/nfc/llcp_core.c", "net/nfc/nci/core.c", "net/nfc/nfc.h" ], "versions": [ { "version": "96f2c6f272ec04083d828de46285a7d7b17d1aad", "lessThan": "25bfa673adc70189c0bc872940421ae59f789cf6", "status": "affected", "versionType": "git" }, { "version": "fc8429f8d86801f092fbfbd257c3af821ac0dcd3", "lessThan": "2b31d0cc95856c856ada91f943fb14dfdf29a923", "status": "affected", "versionType": "git" }, { "version": "425d9d3a92df7d96b3cfb7ee5c240293a21cbde3", "lessThan": "c40f61a6a413f3eaf028e5fe367fd9749e503ab0", "status": "affected", "versionType": "git" }, { "version": "6709d4b7bc2e079241fdef15d1160581c5261c10", "lessThan": "19bcfc2a56d0b82919079b5424c5a9a0ac897dcf", "status": "affected", "versionType": "git" }, { "version": "6709d4b7bc2e079241fdef15d1160581c5261c10", "lessThan": "d8c929e9afdbc33b1876ecb97a517e850449b5bd", "status": "affected", "versionType": "git" }, { "version": "6709d4b7bc2e079241fdef15d1160581c5261c10", "lessThan": "841af260ff477f6191872bc3b2e15488615c1827", "status": "affected", "versionType": "git" }, { "version": "6709d4b7bc2e079241fdef15d1160581c5261c10", "lessThan": "9ede11e12f965ace97c4e0f606667f24fb41e7e1", "status": "affected", "versionType": "git" }, { "version": "6709d4b7bc2e079241fdef15d1160581c5261c10", "lessThan": "dcab71a7011918f6fdba7adcec02d217dcb84b8d", "status": "affected", "versionType": "git" }, { "version": "dd6ff3f3862709ab1a12566e73b9d6a9b8f6e548", "status": "affected", "versionType": "git" }, { "version": "b3ad46e155a6d91b36c6e892019a43e3ef3c696d", "status": "affected", "versionType": "git" }, { "version": "e5207c1d69b1a9707615ab6ff9376e59fc096815", "status": "affected", "versionType": "git" }, { "version": "5.10.188", "lessThan": "5.10.271", "status": "affected", "versionType": "semver" }, { "version": "5.15.121", "lessThan": "5.15.222", "status": "affected", "versionType": "semver" }, { "version": "6.1.39", "lessThan": "6.1.189", "status": "affected", "versionType": "semver" }, { "version": "5.4.251", "lessThan": "5.5", "status": "affected", "versionType": "semver" }, { "version": "6.3.13", "lessThan": "6.4", "status": "affected", "versionType": "semver" }, { "version": "6.4.4", "lessThan": "6.5", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/nfc/microread/microread.c", "drivers/nfc/pn533/pn533.c", "drivers/nfc/pn533/pn533.h", "drivers/nfc/pn544/pn544.c", "drivers/nfc/st21nfca/core.c", "include/net/nfc/hci.h", "include/net/nfc/nfc.h", "net/nfc/core.c", "net/nfc/digital_dep.c", "net/nfc/llcp_core.c", "net/nfc/nci/core.c", "net/nfc/nfc.h" ], "versions": [ { "version": "6.5", "status": "affected" }, { "version": "0", "lessThan": "6.5", "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": "5.10.188", "versionEndExcluding": "5.10.271" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.121", "versionEndExcluding": "5.15.222" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.39", "versionEndExcluding": "6.1.189" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.6.158" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.12.112" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.18.55" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "7.2.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "7.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.251" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4.4" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/25bfa673adc70189c0bc872940421ae59f789cf6" }, { "url": "https://git.kernel.org/stable/c/2b31d0cc95856c856ada91f943fb14dfdf29a923" }, { "url": "https://git.kernel.org/stable/c/c40f61a6a413f3eaf028e5fe367fd9749e503ab0" }, { "url": "https://git.kernel.org/stable/c/19bcfc2a56d0b82919079b5424c5a9a0ac897dcf" }, { "url": "https://git.kernel.org/stable/c/d8c929e9afdbc33b1876ecb97a517e850449b5bd" }, { "url": "https://git.kernel.org/stable/c/841af260ff477f6191872bc3b2e15488615c1827" }, { "url": "https://git.kernel.org/stable/c/9ede11e12f965ace97c4e0f606667f24fb41e7e1" }, { "url": "https://git.kernel.org/stable/c/dcab71a7011918f6fdba7adcec02d217dcb84b8d" } ], "title": "nfc: fix use-after-free in nfc_get_local_general_bytes", 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