{"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": "2026-08-10T12:02:50.156Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-10T12:02:50.156Z"}, "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."}], "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": "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": "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-rc5", "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": "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-rc5"}]}]}], "references": [{"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"}}}}

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{"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": "2026-08-10T21:30:03.869508+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-190", "CWE-119", "CWE-122"]}