{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-54085", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T13:02:52.515Z", "datePublished": "2025-12-24T13:06:16.161Z", "dateUpdated": "2026-05-11T19:55:12.059Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:55:12.059Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix NULL pointer dereference on fastopen early fallback\n\nIn case of early fallback to TCP, subflow_syn_recv_sock() deletes\nthe subflow context before returning the newly allocated sock to\nthe caller.\n\nThe fastopen path does not cope with the above unconditionally\ndereferencing the subflow context."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/mptcp/fastopen.c"], "versions": [{"version": "36b122baf6a8bd46b4a591f12f4ed17b22257408", "lessThan": "95135835519b0ab931c39908b2c99e9fb3c9068b", "status": "affected", "versionType": "git"}, {"version": "36b122baf6a8bd46b4a591f12f4ed17b22257408", "lessThan": "c0ff6f6da66a7791a32c0234388b1bdc00244917", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/mptcp/fastopen.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.12", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3", "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": "6.2", "versionEndExcluding": "6.2.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/95135835519b0ab931c39908b2c99e9fb3c9068b"}, {"url": "https://git.kernel.org/stable/c/c0ff6f6da66a7791a32c0234388b1bdc00244917"}], "title": "mptcp: fix NULL pointer dereference on fastopen early fallback", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix NULL pointer dereference on fastopen early fallback\n\nIn case of early fallback to TCP, subflow_syn_recv_sock() deletes\nthe subflow context before returning the newly allocated sock to\nthe caller.\n\nThe fastopen path does not cope with the above unconditionally\ndereferencing the subflow context."}], "id": "CVE-2023-54085", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-12-24T13:16:10.357", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/95135835519b0ab931c39908b2c99e9fb3c9068b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c0ff6f6da66a7791a32c0234388b1bdc00244917"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: mptcp: fix NULL pointer dereference on fastopen early fallback", "id": "2425184", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2425184"}, "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"}, "details": ["No description is available for this CVE."], "name": "CVE-2023-54085", "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": "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": "2025-12-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-54085\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-54085\nhttps://lore.kernel.org/linux-cve-announce/2025122405-CVE-2023-54085-7e32@gregkh/T"], "threat_severity": "Moderate"}

{}