{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53340", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-16T16:08:59.565Z", "datePublished": "2025-09-17T14:56:33.917Z", "dateUpdated": "2026-08-05T09:13:36.548Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:13:36.548Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Collect command failures data only for known commands\n\nDEVX can issue a general command, which is not used by mlx5 driver.\nIn case such command is failed, mlx5 is trying to collect the failure\ndata, However, mlx5 doesn't create a storage for this command, since\nmlx5 doesn't use it. This lead to array-index-out-of-bounds error.\n\nFix it by checking whether the command is known before collecting the\nfailure data." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - Reachable only via local RDMA uverbs/DEVX ioctls on /dev/infiniband/uverbs*; the bug is not triggered by remote network packet processing.\nAC:L - An attacker can reliably issue MLX5_IB_METHOD_DEVX_OTHER with an opcode in [MLX5_CMD_OP_MAX, 0xd00) that firmware rejects, causing cmd_status_log to index past the stats array with no race or luck required.\nPR:L - uverbs devices default to mode 0666 and DEVX ucontext allocation requires no elevated capability, so a normal unprivileged local user with mlx5 RDMA access can trigger it.\nUI:N - Exploitation requires only attacker-controlled DEVX commands; no victim action is needed.\nS:U - Impact is kernel memory corruption / privilege escalation within the same host security authority, not a VM or IOMMU boundary cross.\nC:H - Attacker-controlled OOB writes corrupt adjacent mlx5_core_dev fields (including HCA capability pointers), which per kernel scoring guidance for exploitable memory corruption supports high confidentiality impact.\nI:H - This is an attacker-indexed out-of-bounds write (~493 opcodes past the array into following caps and device state), which can corrupt kernel data and enable control-flow hijacking.\nA:H - OOB access takes spin_lock_irq on non-stats memory and can oops/panic or hang the kernel, matching high availability impact." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/mellanox/mlx5/core/cmd.c" ], "versions": [ { "version": "34f46ae0d4b38e83cfb26fb6f06b5b5efea47fdc", "lessThan": "411e4d6caa7f7169192b8dacc8421ac4fd64a354", "status": "affected", "versionType": "git" }, { "version": "34f46ae0d4b38e83cfb26fb6f06b5b5efea47fdc", "lessThan": "d8b6f175235d7327b4e1b13216859e89496dfbd5", "status": "affected", "versionType": "git" }, { "version": "34f46ae0d4b38e83cfb26fb6f06b5b5efea47fdc", "lessThan": "2a0a935fb64ee8af253b9c6133bb6702fb152ac2", "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/net/ethernet/mellanox/mlx5/core/cmd.c" ], "versions": [ { "version": "5.18", "status": "affected" }, { "version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.31", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3.5", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4", "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": "5.18", "versionEndExcluding": "6.1.31" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.3.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.4" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/411e4d6caa7f7169192b8dacc8421ac4fd64a354" }, { "url": "https://git.kernel.org/stable/c/d8b6f175235d7327b4e1b13216859e89496dfbd5" }, { "url": "https://git.kernel.org/stable/c/2a0a935fb64ee8af253b9c6133bb6702fb152ac2" } ], "title": "net/mlx5: Collect command failures data only for known commands", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2023-53340", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-01-14T18:38:29.430498Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-129", "description": "CWE-129 Improper Validation of Array Index" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T18:43:01.728Z" } } ] } }