CVE-2026-46145

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Bounds check it so the memcpy cannot 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 by issuing RDMA verbs to the local /dev/infiniband/uverbs* character device; `rx_hash_key_len` arrives via `ib_copy_from_udata` from a local process, with no remote network path.\nAC:L - The attacker directly controls `rx_hash_key_len` in the uAPI struct and can set it arbitrarily large to trigger the overflow on every call; there is no race or condition outside the attacker's control.\nPR:L - Reaching the raw-packet QP path requires CAP_NET_RAW, but that is a narrow, non-root capability (not the \"real root/admin\" bar for High) and is routinely granted to unprivileged networking/RDMA applications such as DPDK workloads.\nUI:N - The overflow is triggered entirely by the attacker's own QP-creation request; no action by any other user is required.\nS:U - The corruption is of the kernel's own heap allocation within the same kernel security authority; no crossing into a separate scope (VM/IOMMU) occurs.\nC:H - The memcpy over-reads the 40-byte stack source by an unbounded amount and the heap overflow can be leveraged to disclose adjacent kernel memory, so confidentiality impact is High.\nI:H - An attacker-controlled-length memcpy writes past a 40-byte heap field, giving a heap out-of-bounds write that corrupts adjacent kernel objects and is exploitable toward arbitrary write/control-flow hijack.\nA:H - A large `rx_hash_key_len` corrupts the kernel heap and/or faults reading unmapped stack/heap pages, reliably causing a kernel panic/oops."}]}], "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/qp.c"], "versions": [{"version": 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{"bugzilla": {"description": "kernel: RDMA/mana: Validate rx_hash_key_len", "id": "2482581", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482581"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["A flaw was found in the Linux kernel's RDMA/mana component. A local user could exploit this vulnerability by providing an invalid `rx_hash_key_len` value through a user-space API (uAPI) structure. This invalid value is then used in a `memcpy` operation without proper bounds checking, allowing the user to write beyond intended memory boundaries. This can lead to kernel memory corruption, potentially resulting in privilege escalation or a denial of service (DoS)."], "name": "CVE-2026-46145", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-46145\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46145\nhttps://lore.kernel.org/linux-cve-announce/2026052821-CVE-2026-46145-e347@gregkh/T"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0266a177631d4c6b963b5b12dd986a8c5abdbf06,7d7c9f0fcd19c4d2f0164347c58d49cafa961b72)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0266a177631d4c6b963b5b12dd986a8c5abdbf06,11c1431d641e0e4e0529e96957995820600c7287)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0266a177631d4c6b963b5b12dd986a8c5abdbf06,012796f9541fcd0c1fa8ae4da7eb4d83931ef838)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0266a177631d4c6b963b5b12dd986a8c5abdbf06,7d94f155f354b961c598f71bafa804dceded513f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0266a177631d4c6b963b5b12dd986a8c5abdbf06,6dd2d4ad9c8429523b1c220c5132bd551c006425)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.141,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.88,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.30,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.7,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1-rc3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-28T11:45:16.113478+00:00", "updated": "2026-10-23T01:30:13.894231+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}