{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53116", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-05-02T15:51:43.554Z", "datePublished": "2025-05-02T15:55:54.858Z", "dateUpdated": "2026-08-05T09:12:52.059Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:12:52.059Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: avoid potential UAF in nvmet_req_complete()\n\nAn nvme target ->queue_response() operation implementation may free the\nrequest passed as argument. Such implementation potentially could result\nin a use after free of the request pointer when percpu_ref_put() is\ncalled in nvmet_req_complete().\n\nAvoid such problem by using a local variable to save the sq pointer\nbefore calling __nvmet_req_complete(), thus avoiding dereferencing the\nreq pointer after that function call." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL" }, "scenarios": [ { "lang": "en", "value": "AV:N - The vulnerable code is in the shared NVMe target core and is reachable via network-facing transports such as nvmet-tcp and nvmet-rdma, which accept remote NVMe-oF connections and complete requests through nvmet_req_complete().\nAC:L - An attacker who can send NVMe commands reliably drives request completion; on FC the abort path frees the request synchronously inside queue_response, and on TCP/RDMA concurrent requests create a reuse race the attacker controls.\nPR:N - The discovery subsystem allows any host without credentials, DH-CHAP auth is optional, and allow_any_host deployments accept unauthenticated connects, so a remote peer can reach nvmet_req_complete with no privileges.\nUI:N - Exploitation requires only attacker-sent NVMe-oF traffic to a configured target; no victim user action is needed.\nS:U - This is memory corruption within the host kernel's NVMe target authority and does not cross a VM, IOMMU, or other security boundary.\nC:H - Use-after-free of the request object allows reuse/spray of the freed structure, which can be leveraged for arbitrary kernel memory disclosure.\nI:H - The same UAF/reuse of the nvmet request enables attacker-controlled heap contents and corruption suitable for arbitrary write or control-flow hijacking.\nA:H - Dereferencing the freed request (e.g., req->sq for percpu_ref_put) can crash the kernel via oops/panic even when not fully exploited for code execution." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/nvme/target/core.c" ], "versions": [ { "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "e5d99b29012bbf0e86929403209723b2806500c1", "status": "affected", "versionType": "git" }, { "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "fafcb4b26393870c45462f9af6a48e581dbbcf7e", "status": "affected", "versionType": "git" }, { "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "04c394208831d5e0d5cfee46722eb0f033cd4083", "status": "affected", "versionType": "git" }, { "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "a6317235da8aa7cb97529ebc8121cc2a4c4c437a", "status": "affected", "versionType": "git" }, { "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "f1d5888a5efe345b63c430b256e95acb0a475642", "status": "affected", "versionType": "git" }, { "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "bcd535f07c58342302a2cd2bdd8894fe0872c8a9", "status": "affected", "versionType": "git" }, { "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "8ed9813871038b25a934b21ab76b5b7dbf44fc3a", "status": "affected", "versionType": "git" }, { "version": "a07b4970f464f13640e28e16dad6cfa33647cc99", "lessThan": "6173a77b7e9d3e202bdb9897b23f2a8afe7bf286", "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/nvme/target/core.c" ], "versions": [ { "version": "4.8", "status": "affected" }, { "version": "0", "lessThan": "4.8", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.311", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.279", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.238", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.176", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.104", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.21", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.8", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3", "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": "4.8", "versionEndExcluding": "4.14.311" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "4.19.279" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.4.238" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.10.176" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.15.104" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.1.21" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.2.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/e5d99b29012bbf0e86929403209723b2806500c1" }, { "url": "https://git.kernel.org/stable/c/fafcb4b26393870c45462f9af6a48e581dbbcf7e" }, { "url": "https://git.kernel.org/stable/c/04c394208831d5e0d5cfee46722eb0f033cd4083" }, { "url": "https://git.kernel.org/stable/c/a6317235da8aa7cb97529ebc8121cc2a4c4c437a" }, { "url": "https://git.kernel.org/stable/c/f1d5888a5efe345b63c430b256e95acb0a475642" }, { "url": "https://git.kernel.org/stable/c/bcd535f07c58342302a2cd2bdd8894fe0872c8a9" }, { "url": "https://git.kernel.org/stable/c/8ed9813871038b25a934b21ab76b5b7dbf44fc3a" }, { "url": "https://git.kernel.org/stable/c/6173a77b7e9d3e202bdb9897b23f2a8afe7bf286" } ], "title": "nvmet: avoid potential UAF in nvmet_req_complete()", "x_generator": { "engine": "bippy-1.2.0" } } } }