CVE-2026-46102

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Leave strp_stop() unchanged so final cleanup still happens in\nstrp_done() after the work and timer have been synchronized."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - The strparser parses data received from a remote TCP peer (espintcp ESP-in-TCP framing, sockmap framed protocols); the leak is driven by a remote peer sending a partial length-prefixed frame that never completes.\nAC:L - The attacker reliably sends an incomplete framed message and simply lets the message-assembly timer expire; this trigger is fully under the attacker's control.\nPR:N - The framing parse (length-prefix read) occurs at the stream layer before any authentication of the payload, so a remote peer needs no privileges on the target to send partial frames and trigger the leak.\nUI:N - No victim interaction is required; the leak is triggered solely by the attacker's network data and the timeout firing.\nS:U - The leaked skb is kernel memory within the same security authority; no security boundary is crossed.\nC:N - The leaked partial-message skb is orphaned, not exposed to the attacker; the bug discloses no information.\nI:N - Nothing is overwritten or modified; the parser is stopped and the dangling pointer is never reused, so there is no integrity impact.\nA:H - Each abort leaks a partial message (up to sk_rcvbuf) and the commit notes it can be triggered repeatedly to exhaust memory, leading to kernel-wide memory exhaustion / OOM denial of service."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/strparser/strparser.c"], "versions": [{"version": "43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a", "lessThan": "d6668ce0e78d23eabecef9a6bc4f0f739cb28ad3", "status": "affected", "versionType": "git"}, 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"status": "unaffected", "versionType": "semver"}, {"version": "7.0.4", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "4.9", "versionEndExcluding": "5.10.258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.6.140"}, {"vulnerable": true, "criteria": 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{"url": "https://git.kernel.org/stable/c/19ca9475f18f991735f98a22e735c43e95e6298d"}, {"url": "https://git.kernel.org/stable/c/56082f442023db9be1a5a29d4ee361de4017c0b7"}, {"url": "https://git.kernel.org/stable/c/fe72340daaf1af588be88056faf98965f39e6032"}], "title": "net: strparser: fix skb_head leak in strp_abort_strp()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"x_adpType": "supplier", "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-10-15T01:20:31.343Z"}, "affected": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [{"status": "affected", "version": "0", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}], "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-46102", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, 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The strparser parses data received from a remote TCP peer (espintcp ESP-in-TCP framing, sockmap framed protocols); the leak is driven by a remote peer sending a partial length-prefixed frame that never completes.\nAC:L - The attacker reliably sends an incomplete framed message and simply lets the message-assembly timer expire; this trigger is fully under the attacker's control.\nPR:N - The framing parse (length-prefix read) occurs at the stream layer before any authentication of the payload, so a remote peer needs no privileges on the target to send partial frames and trigger the leak.\nUI:N - No victim interaction is required; the leak is triggered solely by the attacker's network data and the timeout firing.\nS:U - The leaked skb is kernel memory within the same security authority; no security boundary is crossed.\nC:N - The leaked partial-message skb is orphaned, not exposed to the attacker; the bug discloses no information.\nI:N - Nothing is overwritten or modified; the parser is stopped and the dangling pointer is never reused, so there is no integrity impact.\nA:H - Each abort leaks a partial message (up to sk_rcvbuf) and the commit notes it can be triggered repeatedly to exhaust memory, leading to kernel-wide memory exhaustion / OOM denial of service."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a", "lessThan": "d6668ce0e78d23eabecef9a6bc4f0f739cb28ad3", "versionType": "git"}, {"status": "affected", "version": "43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a", "lessThan": "a470ed71c906cc8cbad0d74c9942216698911f8b", "versionType": "git"}, {"status": "affected", "version": "43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a", "lessThan": "c2e57695ec9ff9d42f23de70f3805199153d007b", "versionType": "git"}, {"status": "affected", "version": "43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a", "lessThan": "e9ae00490d474757c0f9c65073de83e6bb1e5a00", "versionType": "git"}, {"status": "affected", "version": "43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a", "lessThan": "5327dad2ffe9c1b49881dd6d51ff3c6893847568", "versionType": "git"}, {"status": "affected", "version": "43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a", "lessThan": "19ca9475f18f991735f98a22e735c43e95e6298d", "versionType": "git"}, {"status": "affected", "version": "43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a", "lessThan": "56082f442023db9be1a5a29d4ee361de4017c0b7", "versionType": "git"}, {"status": "affected", "version": "43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a", "lessThan": "fe72340daaf1af588be88056faf98965f39e6032", "versionType": "git"}], "programFiles": ["net/strparser/strparser.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.9"}, {"status": "unaffected", "version": "0", "lessThan": "4.9", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.258", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.209", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.175", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.140", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.86", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.27", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.4", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/strparser/strparser.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/d6668ce0e78d23eabecef9a6bc4f0f739cb28ad3"}, {"url": "https://git.kernel.org/stable/c/a470ed71c906cc8cbad0d74c9942216698911f8b"}, {"url": "https://git.kernel.org/stable/c/c2e57695ec9ff9d42f23de70f3805199153d007b"}, {"url": "https://git.kernel.org/stable/c/e9ae00490d474757c0f9c65073de83e6bb1e5a00"}, {"url": "https://git.kernel.org/stable/c/5327dad2ffe9c1b49881dd6d51ff3c6893847568"}, {"url": "https://git.kernel.org/stable/c/19ca9475f18f991735f98a22e735c43e95e6298d"}, {"url": "https://git.kernel.org/stable/c/56082f442023db9be1a5a29d4ee361de4017c0b7"}, {"url": "https://git.kernel.org/stable/c/fe72340daaf1af588be88056faf98965f39e6032"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: strparser: fix skb_head leak in strp_abort_strp()\n\nWhen the stream parser is aborted, for example after a message assembly timeout,\nit can still hold a reference to a partially assembled message in\nstrp->skb_head.\n\nThat skb is not released in strp_abort_strp(), which leaks the partially\nassembled message and can be triggered repeatedly to exhaust memory.\n\nFix this by freeing strp->skb_head and resetting the parser state in the\nabort path. 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Leave strp_stop() unchanged so final cleanup still happens in\nstrp_done() after the work and timer have been synchronized."}], "id": "CVE-2026-46102", "lastModified": "2026-10-19T20:18:29.717", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-46102", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:19:37.365331Z", "version": "2.0.3"}}]}, "published": "2026-05-27T14:17:32.323", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/19ca9475f18f991735f98a22e735c43e95e6298d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5327dad2ffe9c1b49881dd6d51ff3c6893847568"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/56082f442023db9be1a5a29d4ee361de4017c0b7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a470ed71c906cc8cbad0d74c9942216698911f8b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c2e57695ec9ff9d42f23de70f3805199153d007b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d6668ce0e78d23eabecef9a6bc4f0f739cb28ad3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e9ae00490d474757c0f9c65073de83e6bb1e5a00"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fe72340daaf1af588be88056faf98965f39e6032"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-401"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: net: strparser: fix skb_head leak in strp_abort_strp()", "id": "2482117", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482117"}, "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"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's network stream parser. This vulnerability occurs when the stream parser is unexpectedly stopped, such as during a message assembly timeout. A partially processed network message is not properly released from memory, leading to a memory leak. An attacker could repeatedly trigger this issue, causing the system to run out of memory and become unresponsive, resulting in a denial of service (DoS)."], "name": "CVE-2026-46102", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-46102\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46102\nhttps://lore.kernel.org/linux-cve-announce/2026052705-CVE-2026-46102-651a@gregkh/T"], "threat_severity": "Moderate"}

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