{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-53817", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-08T23:58:35.277Z", "datePublished": "2025-12-09T00:01:15.411Z", "dateUpdated": "2026-05-11T19:52:06.568Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:52:06.568Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()\n\nDuring NVMeTCP Authentication a controller can trigger a kernel\noops by specifying the 8192 bit Diffie Hellman group and passing\na correctly sized, but zeroed Diffie Hellamn value.\nmpi_cmp_ui() was detecting this if the second parameter was 0,\nbut 1 is passed from dh_is_pubkey_valid(). This causes the null\npointer u->d to be dereferenced towards the end of mpi_cmp_ui()"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["lib/crypto/mpi/mpi-cmp.c"], "versions": [{"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5", "lessThan": "fde791e8a96a64ea7b0ad2440e43586447a209c6", "status": "affected", "versionType": "git"}, {"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5", "lessThan": "ae63e84ffda74267bf7277c38415ba38389229a0", "status": "affected", "versionType": "git"}, {"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5", "lessThan": "61f5453e9706e99713825594e0c8f9031485fb5f", "status": "affected", "versionType": "git"}, {"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5", "lessThan": "0fc7147c694394f8a8cbc19570c6bc918cac0906", "status": "affected", "versionType": "git"}, {"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5", "lessThan": "67589d247909043e94d2dd5fb590958e0f99d58d", "status": "affected", "versionType": "git"}, {"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5", "lessThan": "d3ad023a39f1127dcfd331c562673355dc078650", "status": "affected", "versionType": "git"}, {"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5", "lessThan": "12ac013ad7ff0df066451e825801d805095b3776", "status": "affected", "versionType": "git"}, {"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5", "lessThan": "9e47a758b70167c9301d2b44d2569f86c7796f2d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["lib/crypto/mpi/mpi-cmp.c"], "versions": [{"version": "3.7", "status": "affected"}, {"version": "0", "lessThan": "3.7", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.326", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.295", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.257", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.197", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.133", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.55", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.5.5", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6", "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": "3.7", "versionEndExcluding": "4.14.326"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "4.19.295"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.4.257"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.10.197"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.15.133"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.1.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.5.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/fde791e8a96a64ea7b0ad2440e43586447a209c6"}, {"url": "https://git.kernel.org/stable/c/ae63e84ffda74267bf7277c38415ba38389229a0"}, {"url": "https://git.kernel.org/stable/c/61f5453e9706e99713825594e0c8f9031485fb5f"}, {"url": "https://git.kernel.org/stable/c/0fc7147c694394f8a8cbc19570c6bc918cac0906"}, {"url": "https://git.kernel.org/stable/c/67589d247909043e94d2dd5fb590958e0f99d58d"}, {"url": "https://git.kernel.org/stable/c/d3ad023a39f1127dcfd331c562673355dc078650"}, {"url": "https://git.kernel.org/stable/c/12ac013ad7ff0df066451e825801d805095b3776"}, {"url": "https://git.kernel.org/stable/c/9e47a758b70167c9301d2b44d2569f86c7796f2d"}], "title": "crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()\n\nDuring NVMeTCP Authentication a controller can trigger a kernel\noops by specifying the 8192 bit Diffie Hellman group and passing\na correctly sized, but zeroed Diffie Hellamn value.\nmpi_cmp_ui() was detecting this if the second parameter was 0,\nbut 1 is passed from dh_is_pubkey_valid(). This causes the null\npointer u->d to be dereferenced towards the end of mpi_cmp_ui()"}], "id": "CVE-2023-53817", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-12-09T01:16:53.960", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0fc7147c694394f8a8cbc19570c6bc918cac0906"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/12ac013ad7ff0df066451e825801d805095b3776"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/61f5453e9706e99713825594e0c8f9031485fb5f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/67589d247909043e94d2dd5fb590958e0f99d58d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9e47a758b70167c9301d2b44d2569f86c7796f2d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ae63e84ffda74267bf7277c38415ba38389229a0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d3ad023a39f1127dcfd331c562673355dc078650"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fde791e8a96a64ea7b0ad2440e43586447a209c6"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()", "id": "2420277", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2420277"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ncrypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()\nDuring NVMeTCP Authentication a controller can trigger a kernel\noops by specifying the 8192 bit Diffie Hellman group and passing\na correctly sized, but zeroed Diffie Hellamn value.\nmpi_cmp_ui() was detecting this if the second parameter was 0,\nbut 1 is passed from dh_is_pubkey_valid(). This causes the null\npointer u->d to be dereferenced towards the end of mpi_cmp_ui()"], "name": "CVE-2023-53817", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not 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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-09T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53817\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53817\nhttps://lore.kernel.org/linux-cve-announce/2025120945-CVE-2023-53817-49a5@gregkh/T"], "threat_severity": "Moderate"}

{}