{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-21735", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T08:45:45.756Z", "datePublished": "2025-02-27T02:12:12.202Z", "dateUpdated": "2026-08-05T11:54:04.509Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:54:04.509Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFC: nci: Add bounds checking in nci_hci_create_pipe()\n\nThe \"pipe\" variable is a u8 which comes from the network. If it's more\nthan 127, then it results in memory corruption in the caller,\nnci_hci_connect_gate()." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - The malformed `pipe` value arrives in an HCI-over-NCI response from the NFC controller/HCI host network (host controller, UICC, eSE), not from any local syscall argument, so the attacker sits on the NFC proximity/host-network boundary rather than on the local host. NFC is a limited-distance, logically adjacent transport, matching AV:A.\nAC:L - The attacker only has to return a pipe identifier of 129-255 in the ADM_CREATE_PIPE response; the out-of-bounds index is taken deterministically with no race, no memory-layout grooming, and no state the attacker cannot influence. Every attempt succeeds on the first try.\nPR:N - The attacker supplying the response needs no credentials or account on the target system whatsoever. The local side of the path (`nfc_dev_up` → `discover_se`) is performed automatically by the platform's NFC daemon at boot/NFC-enable, so no attacker-held privilege is involved in reaching the vulnerable code.\nUI:N - HCI session init runs as part of normal NFC device bring-up and secure-element discovery, which happens automatically when the NFC stack starts; no victim action is required for the malicious response to be parsed.\nS:U - The corruption occurs in kernel heap memory belonging to the NFC subsystem and is handled entirely within the kernel's own security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The attacker controls the index of an out-of-bounds array write into `struct nci_hci_dev`, and kernel-heap memory corruption of this kind is treatable as a primitive that can be leveraged toward disclosure of adjacent kernel state; corrupted `gate2pipe[]` entries are subsequently emitted in HCP headers back over the HCI link, giving the attacker an observable read-back channel for the corrupted region.\nI:H - This is a genuine out-of-bounds array write with an attacker-controlled offset (`pipes[129..255]`), overwriting kernel data structures outside the intended array bounds — the fix author explicitly describes it as \"memory corruption in the caller\". Out-of-bounds writes are scored High for integrity.\nA:H - The out-of-bounds index triggers a kernel panic outright on hardened/Android configurations built with CONFIG_UBSAN_BOUNDS + CONFIG_UBSAN_TRAP, and otherwise corrupts the gate-to-pipe mapping state so the NFC/secure-element stack operates on bogus pipe identifiers, leaving the subsystem in an inconsistent, non-functional state." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/nfc/nci/hci.c" ], "versions": [ { "version": "a1b0b9415817c14d207921582f269d03f848b69f", "lessThan": "bd249109d266f1d52548c46634a15b71656e0d44", "status": "affected", "versionType": "git" }, { "version": "a1b0b9415817c14d207921582f269d03f848b69f", "lessThan": "674e17c5933779a8bf5c15d596fdfcb5ccdebbc2", "status": "affected", "versionType": "git" }, { "version": "a1b0b9415817c14d207921582f269d03f848b69f", "lessThan": "10b3f947b609713e04022101f492d288a014ddfa", "status": "affected", "versionType": "git" }, { "version": "a1b0b9415817c14d207921582f269d03f848b69f", "lessThan": "d5a461c315e5ff92657f84d8ba50caa5abf5c22a", "status": "affected", "versionType": "git" }, { "version": "a1b0b9415817c14d207921582f269d03f848b69f", "lessThan": "172cdfc3a5ea20289c58fb73dadc6fd4a8784a4e", "status": "affected", "versionType": "git" }, { "version": "a1b0b9415817c14d207921582f269d03f848b69f", "lessThan": "2ae4bade5a64d126bd18eb66bd419005c5550218", "status": "affected", "versionType": "git" }, { "version": "a1b0b9415817c14d207921582f269d03f848b69f", "lessThan": "59c7ed20217c0939862fbf8145bc49d5b3a13f4f", "status": "affected", "versionType": "git" }, { "version": "a1b0b9415817c14d207921582f269d03f848b69f", "lessThan": "110b43ef05342d5a11284cc8b21582b698b4ef1c", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/nfc/nci/hci.c" ], "versions": [ { "version": "4.4", "status": "affected" }, { "version": "0", "lessThan": "4.4", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.291", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.235", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.179", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.129", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.78", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.14", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.13.3", "lessThanOrEqual": "6.13.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.14", "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": "5.4.291" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "5.10.235" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "5.15.179" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.1.129" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.6.78" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.12.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.13.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.14" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/bd249109d266f1d52548c46634a15b71656e0d44" }, { "url": "https://git.kernel.org/stable/c/674e17c5933779a8bf5c15d596fdfcb5ccdebbc2" }, { "url": "https://git.kernel.org/stable/c/10b3f947b609713e04022101f492d288a014ddfa" }, { "url": "https://git.kernel.org/stable/c/d5a461c315e5ff92657f84d8ba50caa5abf5c22a" }, { "url": "https://git.kernel.org/stable/c/172cdfc3a5ea20289c58fb73dadc6fd4a8784a4e" }, { "url": "https://git.kernel.org/stable/c/2ae4bade5a64d126bd18eb66bd419005c5550218" }, { "url": "https://git.kernel.org/stable/c/59c7ed20217c0939862fbf8145bc49d5b3a13f4f" }, { "url": "https://git.kernel.org/stable/c/110b43ef05342d5a11284cc8b21582b698b4ef1c" } ], "title": "NFC: nci: Add bounds checking in nci_hci_create_pipe()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T19:36:40.328Z" } }, { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-05-12T12:03:33.287Z" }, "affected": [ { "vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [ { "status": "affected", "version": "0", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" } ], "references": [ { "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html" } ] } ] } }