{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-72494", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.937Z", "datePublished": "2026-08-15T05:57:28.280Z", "dateUpdated": "2026-10-30T12:29:31.628Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:29:31.628Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Replace waitqueue and flag with completion\n\nThe driver previously used a waitqueue along with an explicit\nrequest_done flag, but without proper barriers around request_done.\n\nAn earlier patch by Gui-Dong Han attempted\nto fix this by adding the missing memory barriers. Rather than\nadding the barriers, this patch replaces the waitqueue+flag with\na completion, which is designed for this exact purpose." } ], "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 - Intel irdma CQP completion/wait synchronization is exercised from remote iWARP/RoCE connection management (SYN/listener/IEQ/AEQ) and deferred-completion events, not only local ibverbs; network peers drive the completion side of the race on internet-facing RDMA/NFS/SMB-Direct servers.\nAC:L - Attacker controls both sides by flooding concurrent connections/CQP ops remotely or via concurrent RDMA verbs locally; missing release/acquire ordering on request_done vs compl_info is triggerable at high operation rates without luck-dependent layout.\nPR:N - Remote CM and packet-processing paths issue/wait on CQP before MPA/application auth; local exploitation needs only standard unprivileged /dev/infiniband/uverbs* access (0666 under typical rdma-core udev rules), not init-namespace capabilities.\nUI:N - Exploitation needs only attacker-driven network or verbs traffic against an already-bound RDMA device/listener; no additional victim user action at attack time beyond normal server role.\nS:U - Impact stays within kernel/driver security domain (CQP request objects, NIC PF reset); no VM escape or cross-authority boundary.\nC:H - Without proper barriers the waiter can observe request_done before compl_info stores, return success with stale op_ret_val/error, and recycle the cqp_request while hardware still references scratch → UAF/read primitives.\nI:H - Premature recycle/double-put of dynamic cqp_requests enables attacker-influenced heap reuse; stale callbacks on reused objects and invalid kfree paths provide kernel write/control-flow corruption primitives.\nA:H - Lost request_done causes CQP timeout → ice_rdma_request_reset PF reset; wrong completion state can leave mod_qp_waitq in uninterruptible wait; UAF/panic paths cause kernel crash/hang." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/hw/irdma/hw.c", "drivers/infiniband/hw/irdma/main.h", "drivers/infiniband/hw/irdma/utils.c" ], "versions": [ { "version": "44d9e52977a1b90b0db1c7f8b197c218e9226520", "lessThan": "4dcd5afcc3516b07f0a506c338a49bccfd24589b", "status": "affected", "versionType": "git" }, { "version": "44d9e52977a1b90b0db1c7f8b197c218e9226520", "lessThan": "7d89bff21c12e543d12ad70cb0103cf815891b24", "status": "affected", "versionType": "git" }, { "version": "44d9e52977a1b90b0db1c7f8b197c218e9226520", "lessThan": "8de303efe2ff4fcbf240dfc6eb3469e1e8f18a3f", "status": "affected", "versionType": "git" }, { "version": "44d9e52977a1b90b0db1c7f8b197c218e9226520", "lessThan": "706591cccdd3ac2c0ddc8c2ed6c89a6be9865826", "status": "affected", "versionType": "git" }, { "version": "44d9e52977a1b90b0db1c7f8b197c218e9226520", "lessThan": "bde37aed0724c0139dea177f3aae8d989b6babb1", "status": "affected", "versionType": "git" }, { "version": "44d9e52977a1b90b0db1c7f8b197c218e9226520", "lessThan": "d9c8c45e6d2f438a3c8e643ae78b59454fa0fadd", "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/infiniband/hw/irdma/hw.c", "drivers/infiniband/hw/irdma/main.h", "drivers/infiniband/hw/irdma/utils.c" ], "versions": [ { "version": "5.14", "status": "affected" }, { "version": "0", "lessThan": "5.14", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "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": "5.14", "versionEndExcluding": "6.1.191" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.6.160" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.12.114" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.18.53" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "7.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/4dcd5afcc3516b07f0a506c338a49bccfd24589b" }, { "url": "https://git.kernel.org/stable/c/7d89bff21c12e543d12ad70cb0103cf815891b24" }, { "url": "https://git.kernel.org/stable/c/8de303efe2ff4fcbf240dfc6eb3469e1e8f18a3f" }, { "url": "https://git.kernel.org/stable/c/706591cccdd3ac2c0ddc8c2ed6c89a6be9865826" }, { "url": "https://git.kernel.org/stable/c/bde37aed0724c0139dea177f3aae8d989b6babb1" }, { "url": "https://git.kernel.org/stable/c/d9c8c45e6d2f438a3c8e643ae78b59454fa0fadd" } ], "title": "RDMA/irdma: Replace waitqueue and flag with completion", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2026-72494", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-10-16T18:50:55.518866Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T18:55:26.821Z" } } ] } }