{"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"}}]}}