CVE-2024-58239

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Any kTLS-enabled endpoint (OpenSSL/nginx offload, NVMe-TCP target, NFS/RPC-with-TLS, tlshd-provisioned sockets) is reachable from the network.\nAC:L - The attacker simply sends two same-type non-DATA records back-to-back, and can force the required \"leftover record on rx_list\" precondition by making the first control record larger than the reader's buffer (partially_consumed \u2192 put_on_rx_list). There is no race, no memory-layout dependency, and no timing window to win.\nPR:N - The attacker only needs to be the TLS peer on an established session; on a public kTLS server the handshake is server-authenticated only, so any anonymous client can complete it and then emit arbitrary post-handshake alert/handshake records. No privileges or accounts on the target host are required.\nUI:N - The vulnerable path is the target's ordinary recvmsg() server loop; no victim action beyond normal socket reads is needed. The remote peer triggers it purely by its own record transmission pattern.\nS:U - The consequences are confined to the affected socket and the kernel/process security authority that owns it. No VM, IOMMU, or sandbox boundary is crossed.\nC:N - Only the attacker's own decrypted record payload is delivered to the consumer; all copies remain bounded by the caller-supplied len, so no kernel memory, uninitialized data, or other-session content is exposed.\nI:L - A remote peer can make the kernel coalesce two distinct TLS control records into one recvmsg() under a single TLS_GET_RECORD_TYPE cmsg with no intervening record boundary, corrupting the protocol message stream handed to the consumer \u2014 e.g. tls_alert_recv() parses only the first two bytes, letting a fatal alert be hidden behind a preceding warning alert. The modification is real but limited to attacker-supplied control-message framing, not arbitrary data or control-flow.\nA:H - With MSG_WAITALL, target is derived from the full requested length before len -= copied, so after process_rx_list returns a complete control record the loop re-enters tls_rx_rec_wait() and blocks indefinitely (default SO_RCVTIMEO of 0) instead of returning the record. The wedged reader holds ctx->reader_present, so every other thread reading that socket also stalls in tls_rx_reader_acquire(), and a remote peer can repeat this across connections to hang service threads."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/tls/tls_sw.c"], "versions": [{"version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "f310143961e2d9a0479fca117ce869f8aaecc140", "status": "affected", "versionType": "git"}, {"version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "31e10d6cb0c9532ff070cf50da1657c3acee9276", "status": "affected", "versionType": "git"}, {"version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "4338032aa90bd1d5b33a4274e8fa8347cda5ee09", "status": "affected", "versionType": "git"}, {"version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "6756168add1c6c3ef1c32c335bb843a5d1f99a75", "status": "affected", "versionType": "git"}, {"version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "3b952d8fdfcf6fd8ea0b8954bc9277642cf0977f", "status": "affected", "versionType": "git"}, {"version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "a4ed943882a8fc057ea5a67643314245e048bbdd", "status": "affected", "versionType": "git"}, {"version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "fdfbaec5923d9359698cbb286bc0deadbb717504", "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/tls/tls_sw.c"], "versions": [{"version": "5.1", "status": "affected"}, {"version": "0", "lessThan": "5.1", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.270", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.211", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.150", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.80", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.19", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.7.7", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8", "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": "5.1", "versionEndExcluding": "5.4.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.10.211"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.15.150"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.1.80"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.6.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.7.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.8"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f310143961e2d9a0479fca117ce869f8aaecc140"}, {"url": "https://git.kernel.org/stable/c/31e10d6cb0c9532ff070cf50da1657c3acee9276"}, {"url": "https://git.kernel.org/stable/c/4338032aa90bd1d5b33a4274e8fa8347cda5ee09"}, {"url": "https://git.kernel.org/stable/c/6756168add1c6c3ef1c32c335bb843a5d1f99a75"}, {"url": "https://git.kernel.org/stable/c/3b952d8fdfcf6fd8ea0b8954bc9277642cf0977f"}, {"url": "https://git.kernel.org/stable/c/a4ed943882a8fc057ea5a67643314245e048bbdd"}, {"url": "https://git.kernel.org/stable/c/fdfbaec5923d9359698cbb286bc0deadbb717504"}], "title": "tls: stop recv() if initial process_rx_list gave us non-DATA", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-58239", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-15T21:42:29.347860Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:51:51.549Z"}}]}}

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Any kTLS-enabled endpoint (OpenSSL/nginx offload, NVMe-TCP target, NFS/RPC-with-TLS, tlshd-provisioned sockets) is reachable from the network.\nAC:L - The attacker simply sends two same-type non-DATA records back-to-back, and can force the required \"leftover record on rx_list\" precondition by making the first control record larger than the reader's buffer (partially_consumed \u2192 put_on_rx_list). There is no race, no memory-layout dependency, and no timing window to win.\nPR:N - The attacker only needs to be the TLS peer on an established session; on a public kTLS server the handshake is server-authenticated only, so any anonymous client can complete it and then emit arbitrary post-handshake alert/handshake records. No privileges or accounts on the target host are required.\nUI:N - The vulnerable path is the target's ordinary recvmsg() server loop; no victim action beyond normal socket reads is needed. The remote peer triggers it purely by its own record transmission pattern.\nS:U - The consequences are confined to the affected socket and the kernel/process security authority that owns it. No VM, IOMMU, or sandbox boundary is crossed.\nC:N - Only the attacker's own decrypted record payload is delivered to the consumer; all copies remain bounded by the caller-supplied len, so no kernel memory, uninitialized data, or other-session content is exposed.\nI:L - A remote peer can make the kernel coalesce two distinct TLS control records into one recvmsg() under a single TLS_GET_RECORD_TYPE cmsg with no intervening record boundary, corrupting the protocol message stream handed to the consumer \u2014 e.g. tls_alert_recv() parses only the first two bytes, letting a fatal alert be hidden behind a preceding warning alert. The modification is real but limited to attacker-supplied control-message framing, not arbitrary data or control-flow.\nA:H - With MSG_WAITALL, target is derived from the full requested length before len -= copied, so after process_rx_list returns a complete control record the loop re-enters tls_rx_rec_wait() and blocks indefinitely (default SO_RCVTIMEO of 0) instead of returning the record. The wedged reader holds ctx->reader_present, so every other thread reading that socket also stalls in tls_rx_reader_acquire(), and a remote peer can repeat this across connections to hang service threads."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "f310143961e2d9a0479fca117ce869f8aaecc140", "versionType": "git"}, {"status": "affected", "version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "31e10d6cb0c9532ff070cf50da1657c3acee9276", "versionType": "git"}, {"status": "affected", "version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "4338032aa90bd1d5b33a4274e8fa8347cda5ee09", "versionType": "git"}, {"status": "affected", "version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "6756168add1c6c3ef1c32c335bb843a5d1f99a75", "versionType": "git"}, {"status": "affected", "version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "3b952d8fdfcf6fd8ea0b8954bc9277642cf0977f", "versionType": "git"}, {"status": "affected", "version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "a4ed943882a8fc057ea5a67643314245e048bbdd", "versionType": "git"}, {"status": "affected", "version": "692d7b5d1f9125a1cf0595e979e3b5fb7210547e", "lessThan": "fdfbaec5923d9359698cbb286bc0deadbb717504", "versionType": "git"}], "programFiles": ["net/tls/tls_sw.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.1"}, {"status": "unaffected", "version": "0", "lessThan": "5.1", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.270", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.211", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.150", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.80", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.19", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.7.7", "versionType": "semver", "lessThanOrEqual": "6.7.*"}, {"status": "unaffected", "version": "6.8", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/tls/tls_sw.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/f310143961e2d9a0479fca117ce869f8aaecc140"}, {"url": "https://git.kernel.org/stable/c/31e10d6cb0c9532ff070cf50da1657c3acee9276"}, {"url": "https://git.kernel.org/stable/c/4338032aa90bd1d5b33a4274e8fa8347cda5ee09"}, {"url": "https://git.kernel.org/stable/c/6756168add1c6c3ef1c32c335bb843a5d1f99a75"}, {"url": "https://git.kernel.org/stable/c/3b952d8fdfcf6fd8ea0b8954bc9277642cf0977f"}, {"url": "https://git.kernel.org/stable/c/a4ed943882a8fc057ea5a67643314245e048bbdd"}, {"url": "https://git.kernel.org/stable/c/fdfbaec5923d9359698cbb286bc0deadbb717504"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntls: stop recv() if initial process_rx_list gave us non-DATA\n\nIf we have a non-DATA record on the rx_list and another record of the\nsame type still on the queue, we will end up merging them:\n - process_rx_list copies the non-DATA record\n - we start the loop and process the first available record since it's\n of the same type\n - we break out of the loop since the record was not DATA\n\nJust check the record type and jump to the end in case process_rx_list\ndid some work."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.270", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.211", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.150", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.80", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.19", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.7.7", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8", "versionStartIncluding": "5.1"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:47:49.124Z"}}}, "cveMetadata": {"cveId": "CVE-2024-58239", "state": "PUBLISHED", "dateUpdated": "2026-10-15T21:51:51.549Z", "dateReserved": "2025-04-16T07:19:43.804Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-08-22T13:01:17.440Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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process_rx_list copies the non-DATA record\n - we start the loop and process the first available record since it's\n of the same type\n - we break out of the loop since the record was not DATA\n\nJust check the record type and jump to the end in case process_rx_list\ndid some work."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tls: detener recv() si el proceso inicial process_rx_list nos dio un valor que no es DATA Si tenemos un registro que no es DATA en rx_list y otro registro del mismo tipo todav\u00eda en la cola, terminaremos fusion\u00e1ndolos: - process_rx_list copia el registro que no es DATA - iniciamos el bucle y procesamos el primer registro disponible ya que es del mismo tipo - salimos del bucle ya que el registro no era DATA Simplemente verifique el tipo de registro y salte al final en caso de que process_rx_list haya hecho alg\u00fan trabajo."}], "id": "CVE-2024-58239", "lastModified": "2026-10-15T22:18:06.467", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-58239", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:42:29.347860Z", "version": "2.0.3"}}]}, "published": "2025-08-22T14:15:45.840", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/31e10d6cb0c9532ff070cf50da1657c3acee9276"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3b952d8fdfcf6fd8ea0b8954bc9277642cf0977f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4338032aa90bd1d5b33a4274e8fa8347cda5ee09"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6756168add1c6c3ef1c32c335bb843a5d1f99a75"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a4ed943882a8fc057ea5a67643314245e048bbdd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f310143961e2d9a0479fca117ce869f8aaecc140"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fdfbaec5923d9359698cbb286bc0deadbb717504"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: tls: stop recv() if initial process_rx_list gave us non-DATA", "id": "2390320", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2390320"}, "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-2024-58239", "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": "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": "2025-08-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-58239\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-58239\nhttps://lore.kernel.org/linux-cve-announce/2025082210-CVE-2024-58239-dd4f@gregkh/T"], "threat_severity": "Important"}

{"created": "2025-08-23T10:55:30.162161+00:00", "updated": "2025-08-23T10:55:30.162226+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}