CVE-2026-68315

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68315", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.382Z", "datePublished": "2026-08-10T12:02:50.156Z", "dateUpdated": "2026-10-19T21:09:04.525Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:33:08.206Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: validate stream count in sctp_process_strreset_inreq()\n\nWhen processing a RESET_IN_REQUEST from a peer,\nsctp_process_strreset_inreq() derives the stream count from the\nparameter length but does not check whether the resulting\nRESET_OUT_REQUEST would exceed SCTP_MAX_CHUNK_LEN.\n\nThe OUT request header (sctp_strreset_outreq, 16 bytes) is 8 bytes\nlarger than the IN request header (sctp_strreset_inreq, 8 bytes).\nGenerally, the IP payload is bounded to 65535 bytes, so the stream\nlist cannot be large enough to trigger the overflow. However, on\ninterfaces with MTU > 65535 (e.g., loopback with IPv6 jumbograms), a\nstream list that fits within the incoming IN parameter can cause a\n__u16 overflow in sctp_make_strreset_req() when computing the OUT\nrequest size, leading to an undersized skb allocation and a kernel\nBUG:\n\n net/core/skbuff.c:207 skb_panic\n net/core/skbuff.c:2625 skb_put\n net/sctp/sm_make_chunk.c:1535 sctp_addto_chunk\n net/sctp/sm_make_chunk.c:3695 sctp_make_strreset_req\n net/sctp/stream.c:655 sctp_process_strreset_inreq\n\nThe local setsockopt path validates the generated reset request size.\nHowever, for an incoming-only reset, it accounts for the smaller IN\nrequest even though the peer must generate an OUT request with the same\nstream list. Such a request cannot be completed successfully by the\npeer.\n\nReject peer IN requests whose corresponding OUT request would exceed\nSCTP_MAX_CHUNK_LEN. Also tighten the local check so it does not send an\nIN request that would require an oversized OUT request from the peer."}], "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 vulnerability is triggered by processing an SCTP RECONF chunk (RESET_IN_REQUEST) received from a remote/loopback peer in the in-kernel SCTP stack; per kernel guidance net-stack bugs reachable via received packets are Network.\nAC:L - The attacker fully controls the stream list length in the IN request, and the required MTU>65535 is the default for loopback (65536), so the panic is reliably triggerable; stream-reset must be enabled but that is a deployment condition, not an attacker-uncontrollable one.\nPR:N - Sending the RECONF chunk only requires an established SCTP association, which any peer can set up without authentication or credentials; the bug is reached during normal association-scoped packet processing.\nUI:N - No victim interaction is needed; the attacker simply sends a crafted RECONF chunk to an established association.\nS:U - The crash occurs within the kernel's own security scope with no crossing of a security boundary such as VM or IOMMU.\nC:N - The bug is a controlled BUG()/skb_over_panic that aborts before any out-of-bounds access, disclosing no memory contents.\nI:N - The panic fires before the oversized copy executes, so no memory is written or modified out of bounds.\nA:H - The undersized skb allocation causes skb_put to invoke skb_over_panic \u2192 BUG(), producing a kernel panic (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/sctp/stream.c"], "versions": [{"version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "61327d8e7cfb0259d527be17202630f556213249", "status": "affected", "versionType": "git"}, {"version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "7cf7439948e3bf639119119922c88ec190874ca3", "status": "affected", "versionType": "git"}, {"version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "60c47dea5d320d2fc706e9aad1db38a04df0a056", "status": "affected", "versionType": "git"}, {"version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "b255d8cd6cc68045ae9eecbac3b3c14e1f176c9b", "status": "affected", "versionType": "git"}, {"version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "6f0e39d180cd7cced647381b6fa14fd83d261047", "status": "affected", "versionType": "git"}, {"version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "1a10fe1aa9c01f41b389a31906a77d538637c9d9", "status": "affected", "versionType": "git"}, {"version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "00ae679cb21a035491fdad8d58dc6d79cc68b675", "status": "affected", "versionType": "git"}, {"version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "18ae07691d43183d270de8be9dc8e027906015d9", "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/sctp/stream.c"], "versions": [{"version": "4.11", "status": "affected"}, {"version": "0", "lessThan": "4.11", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.265", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.216", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "4.11", "versionEndExcluding": "5.10.265"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "5.15.216"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/61327d8e7cfb0259d527be17202630f556213249"}, {"url": "https://git.kernel.org/stable/c/7cf7439948e3bf639119119922c88ec190874ca3"}, {"url": "https://git.kernel.org/stable/c/60c47dea5d320d2fc706e9aad1db38a04df0a056"}, {"url": "https://git.kernel.org/stable/c/b255d8cd6cc68045ae9eecbac3b3c14e1f176c9b"}, {"url": "https://git.kernel.org/stable/c/6f0e39d180cd7cced647381b6fa14fd83d261047"}, {"url": "https://git.kernel.org/stable/c/1a10fe1aa9c01f41b389a31906a77d538637c9d9"}, {"url": "https://git.kernel.org/stable/c/00ae679cb21a035491fdad8d58dc6d79cc68b675"}, {"url": "https://git.kernel.org/stable/c/18ae07691d43183d270de8be9dc8e027906015d9"}], "title": "sctp: validate stream count in sctp_process_strreset_inreq()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-68315", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T15:47:00.535274Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-190", "description": "CWE-190 Integer Overflow or Wraparound"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T21:09:04.525Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-68315", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T15:47:00.535274Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-190", "description": "CWE-190 Integer Overflow or Wraparound"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T15:47:01.191Z"}}], "cna": {"title": "sctp: validate stream count in sctp_process_strreset_inreq()", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.5, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}, "scenarios": [{"lang": "en", "value": "AV:N - The vulnerability is triggered by processing an SCTP RECONF chunk (RESET_IN_REQUEST) received from a remote/loopback peer in the in-kernel SCTP stack; per kernel guidance net-stack bugs reachable via received packets are Network.\nAC:L - The attacker fully controls the stream list length in the IN request, and the required MTU>65535 is the default for loopback (65536), so the panic is reliably triggerable; stream-reset must be enabled but that is a deployment condition, not an attacker-uncontrollable one.\nPR:N - Sending the RECONF chunk only requires an established SCTP association, which any peer can set up without authentication or credentials; the bug is reached during normal association-scoped packet processing.\nUI:N - No victim interaction is needed; the attacker simply sends a crafted RECONF chunk to an established association.\nS:U - The crash occurs within the kernel's own security scope with no crossing of a security boundary such as VM or IOMMU.\nC:N - The bug is a controlled BUG()/skb_over_panic that aborts before any out-of-bounds access, disclosing no memory contents.\nI:N - The panic fires before the oversized copy executes, so no memory is written or modified out of bounds.\nA:H - The undersized skb allocation causes skb_put to invoke skb_over_panic \u2192 BUG(), producing a kernel panic (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": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "61327d8e7cfb0259d527be17202630f556213249", "versionType": "git"}, {"status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "7cf7439948e3bf639119119922c88ec190874ca3", "versionType": "git"}, {"status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "60c47dea5d320d2fc706e9aad1db38a04df0a056", "versionType": "git"}, {"status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "b255d8cd6cc68045ae9eecbac3b3c14e1f176c9b", "versionType": "git"}, {"status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "6f0e39d180cd7cced647381b6fa14fd83d261047", "versionType": "git"}, {"status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "1a10fe1aa9c01f41b389a31906a77d538637c9d9", "versionType": "git"}, {"status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "00ae679cb21a035491fdad8d58dc6d79cc68b675", "versionType": "git"}, {"status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "lessThan": "18ae07691d43183d270de8be9dc8e027906015d9", "versionType": "git"}], "programFiles": ["net/sctp/stream.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.11"}, {"status": "unaffected", "version": "0", "lessThan": "4.11", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.265", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.216", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.183", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.148", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.101", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.42", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.6", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/sctp/stream.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/61327d8e7cfb0259d527be17202630f556213249"}, {"url": "https://git.kernel.org/stable/c/7cf7439948e3bf639119119922c88ec190874ca3"}, {"url": "https://git.kernel.org/stable/c/60c47dea5d320d2fc706e9aad1db38a04df0a056"}, {"url": "https://git.kernel.org/stable/c/b255d8cd6cc68045ae9eecbac3b3c14e1f176c9b"}, {"url": "https://git.kernel.org/stable/c/6f0e39d180cd7cced647381b6fa14fd83d261047"}, {"url": "https://git.kernel.org/stable/c/1a10fe1aa9c01f41b389a31906a77d538637c9d9"}, {"url": "https://git.kernel.org/stable/c/00ae679cb21a035491fdad8d58dc6d79cc68b675"}, {"url": "https://git.kernel.org/stable/c/18ae07691d43183d270de8be9dc8e027906015d9"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: validate stream count in sctp_process_strreset_inreq()\n\nWhen processing a RESET_IN_REQUEST from a peer,\nsctp_process_strreset_inreq() derives the stream count from the\nparameter length but does not check whether the resulting\nRESET_OUT_REQUEST would exceed SCTP_MAX_CHUNK_LEN.\n\nThe OUT request header (sctp_strreset_outreq, 16 bytes) is 8 bytes\nlarger than the IN request header (sctp_strreset_inreq, 8 bytes).\nGenerally, the IP payload is bounded to 65535 bytes, so the stream\nlist cannot be large enough to trigger the overflow. However, on\ninterfaces with MTU > 65535 (e.g., loopback with IPv6 jumbograms), a\nstream list that fits within the incoming IN parameter can cause a\n__u16 overflow in sctp_make_strreset_req() when computing the OUT\nrequest size, leading to an undersized skb allocation and a kernel\nBUG:\n\n net/core/skbuff.c:207 skb_panic\n net/core/skbuff.c:2625 skb_put\n net/sctp/sm_make_chunk.c:1535 sctp_addto_chunk\n net/sctp/sm_make_chunk.c:3695 sctp_make_strreset_req\n net/sctp/stream.c:655 sctp_process_strreset_inreq\n\nThe local setsockopt path validates the generated reset request size.\nHowever, for an incoming-only reset, it accounts for the smaller IN\nrequest even though the peer must generate an OUT request with the same\nstream list. Such a request cannot be completed successfully by the\npeer.\n\nReject peer IN requests whose corresponding OUT request would exceed\nSCTP_MAX_CHUNK_LEN. Also tighten the local check so it does not send an\nIN request that would require an oversized OUT request from the peer."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.265", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.216", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.183", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.148", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.101", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.42", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.6", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "4.11"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:33:08.206Z"}}}, "cveMetadata": {"cveId": "CVE-2026-68315", "state": "PUBLISHED", "dateUpdated": "2026-10-19T21:09:04.525Z", "dateReserved": "2026-07-30T09:28:09.382Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-10T12:02:50.156Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/sctp/stream.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "61327d8e7cfb0259d527be17202630f556213249", "status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "versionType": "git"}, {"lessThan": "7cf7439948e3bf639119119922c88ec190874ca3", "status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "versionType": "git"}, {"lessThan": "60c47dea5d320d2fc706e9aad1db38a04df0a056", "status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "versionType": "git"}, {"lessThan": "b255d8cd6cc68045ae9eecbac3b3c14e1f176c9b", "status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "versionType": "git"}, {"lessThan": "6f0e39d180cd7cced647381b6fa14fd83d261047", "status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "versionType": "git"}, {"lessThan": "1a10fe1aa9c01f41b389a31906a77d538637c9d9", "status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "versionType": "git"}, {"lessThan": "00ae679cb21a035491fdad8d58dc6d79cc68b675", "status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "versionType": "git"}, {"lessThan": "18ae07691d43183d270de8be9dc8e027906015d9", "status": "affected", "version": "7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/sctp/stream.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.11"}, {"lessThan": "4.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.265", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: validate stream count in sctp_process_strreset_inreq()\n\nWhen processing a RESET_IN_REQUEST from a peer,\nsctp_process_strreset_inreq() derives the stream count from the\nparameter length but does not check whether the resulting\nRESET_OUT_REQUEST would exceed SCTP_MAX_CHUNK_LEN.\n\nThe OUT request header (sctp_strreset_outreq, 16 bytes) is 8 bytes\nlarger than the IN request header (sctp_strreset_inreq, 8 bytes).\nGenerally, the IP payload is bounded to 65535 bytes, so the stream\nlist cannot be large enough to trigger the overflow. However, on\ninterfaces with MTU > 65535 (e.g., loopback with IPv6 jumbograms), a\nstream list that fits within the incoming IN parameter can cause a\n__u16 overflow in sctp_make_strreset_req() when computing the OUT\nrequest size, leading to an undersized skb allocation and a kernel\nBUG:\n\n net/core/skbuff.c:207 skb_panic\n net/core/skbuff.c:2625 skb_put\n net/sctp/sm_make_chunk.c:1535 sctp_addto_chunk\n net/sctp/sm_make_chunk.c:3695 sctp_make_strreset_req\n net/sctp/stream.c:655 sctp_process_strreset_inreq\n\nThe local setsockopt path validates the generated reset request size.\nHowever, for an incoming-only reset, it accounts for the smaller IN\nrequest even though the peer must generate an OUT request with the same\nstream list. Such a request cannot be completed successfully by the\npeer.\n\nReject peer IN requests whose corresponding OUT request would exceed\nSCTP_MAX_CHUNK_LEN. Also tighten the local check so it does not send an\nIN request that would require an oversized OUT request from the peer."}], "id": "CVE-2026-68315", "lastModified": "2026-10-19T22:17:12.863", "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-2026-68315", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:47:00.535274Z", "version": "2.0.3"}}]}, "published": "2026-08-10T13:20:21.440", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/00ae679cb21a035491fdad8d58dc6d79cc68b675"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/18ae07691d43183d270de8be9dc8e027906015d9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1a10fe1aa9c01f41b389a31906a77d538637c9d9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/60c47dea5d320d2fc706e9aad1db38a04df0a056"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/61327d8e7cfb0259d527be17202630f556213249"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6f0e39d180cd7cced647381b6fa14fd83d261047"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7cf7439948e3bf639119119922c88ec190874ca3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b255d8cd6cc68045ae9eecbac3b3c14e1f176c9b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: sctp: validate stream count in sctp_process_strreset_inreq()", "id": "2513474", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513474"}, "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 Stream Control Transmission Protocol (SCTP) implementation. When processing a Stream Reset Incoming Request (RESET_IN_REQUEST) from a peer, the kernel does not properly validate the stream count. This can lead to an integer overflow when calculating the size for the corresponding outgoing request, resulting in an undersized memory allocation. A remote attacker could exploit this vulnerability on interfaces supporting large Maximum Transmission Units (MTU) to trigger a kernel bug, causing a denial of service."], "name": "CVE-2026-68315", "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": "2026-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68315\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68315\nhttps://lore.kernel.org/linux-cve-announce/2026081032-CVE-2026-68315-b0e7@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137,b255d8cd6cc68045ae9eecbac3b3c14e1f176c9b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137,6f0e39d180cd7cced647381b6fa14fd83d261047)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137,1a10fe1aa9c01f41b389a31906a77d538637c9d9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137,00ae679cb21a035491fdad8d58dc6d79cc68b675)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137,18ae07691d43183d270de8be9dc8e027906015d9)"}}], "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": "4.11"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.11)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc5,*)"}}], "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": "2026-08-10T18:15:11.381640+00:00", "updated": "2026-10-20T13:45:13.294156+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}