{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-38542", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-06-18T19:36:34.919Z", "datePublished": "2024-06-19T13:35:17.310Z", "dateUpdated": "2026-08-05T11:32:40.715Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:32:40.715Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mana_ib: boundary check before installing cq callbacks\n\nAdd a boundary check inside mana_ib_install_cq_cb to prevent index overflow." } ], "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 - The vulnerable code is reached only from local userspace via write()/ioctl() on /dev/infiniband/uverbs* (ibv_create_qp with IB_QPT_RAW_PACKET), not from any network-facing handler. No remote peer data influences the path.\nAC:L - The attacker deterministically drives the code path by creating raw-packet QPs (including RSS QPs with a 64-entry indirection table, allocating many HW CQs per call), and the missing check fires on any device/host-returned cq_id outside [0, max_num_cqs) — including the INVALID_QUEUE_ID sentinel the sibling remove helper explicitly guards against; on a confidential/untrusted-host Azure VM the id is fully attacker-chosen.\nPR:L - An unprivileged local user with access to the RDMA uverbs device node and CAP_NET_RAW — routinely granted to non-root RDMA/HPC workloads and included in default container capability sets — can trigger it; consistent with the existing scoring of the identical mana_ib_create_qp_rss/install_cq_cb path (CVE-2026-46117, CVE-2026-46145).\nUI:N - Exploitation is entirely self-contained in the attacker's own QP-creation sequence; no victim action, mount, or file open is required.\nS:U - The out-of-bounds access corrupts kernel memory within the same kernel security authority; there is no hypervisor, IOMMU, or sandbox boundary crossed.\nC:H - `WARN_ON(gc->cq_table[cq->queue.id])` performs an unbounded out-of-bounds read past the vcalloc'd table, and the resulting kernel-memory corruption is leverageable for arbitrary kernel read, disclosing sensitive data and defeating KASLR.\nI:H - `gc->cq_table[cq->queue.id] = gdma_cq` is an out-of-bounds write of a valid kernel heap pointer at an unvalidated index, and the stale entry is never cleared on teardown (remove_cq_cb bails on its bound check), giving a persistent write primitive usable for control-flow hijack and privilege escalation.\nA:H - An index beyond the table lands in unmapped vmalloc guard pages or corrupts adjacent kernel structures, producing an oops/panic; the completion path later dereferences cq_table entries, so a corrupted entry crashes the kernel." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/hw/mana/cq.c" ], "versions": [ { "version": "cf9cc859d6ff37ce52c09dfbb169b9ee25595a3f", "lessThan": "f12afddfb142587d786df9e3cc4862190d3e2ec8", "status": "affected", "versionType": "git" }, { "version": "2a31c5a7e0d87959a03e846523013c75f4395a91", "lessThan": "168f6fbde0eabd71d1f4133df7d001a950b96977", "status": "affected", "versionType": "git" }, { "version": "2a31c5a7e0d87959a03e846523013c75f4395a91", "lessThan": "f79edef79b6a2161f4124112f9b0c46891bb0b74", "status": "affected", "versionType": "git" }, { "version": "6.8.2", "lessThan": "6.8.12", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/hw/mana/cq.c" ], "versions": [ { "version": "6.9", "status": "affected" }, { "version": "0", "lessThan": "6.9", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.12", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9.3", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10", "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": "6.8.2", "versionEndExcluding": "6.8.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.9.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.10" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/f12afddfb142587d786df9e3cc4862190d3e2ec8" }, { "url": "https://git.kernel.org/stable/c/168f6fbde0eabd71d1f4133df7d001a950b96977" }, { "url": "https://git.kernel.org/stable/c/f79edef79b6a2161f4124112f9b0c46891bb0b74" } ], "title": "RDMA/mana_ib: boundary check before installing cq callbacks", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-20T15:44:47.071270Z", "id": "CVE-2024-38542", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-11-07T16:22:42.359Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:12:25.624Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/f12afddfb142587d786df9e3cc4862190d3e2ec8", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/168f6fbde0eabd71d1f4133df7d001a950b96977", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/f79edef79b6a2161f4124112f9b0c46891bb0b74", "tags": [ "x_transferred" ] } ] } ] } }