{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97618", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "REJECTED", "assignerShortName": "Linux", "dateReserved": "2026-09-24T16:01:01.159Z", "datePublished": "2026-09-25T10:22:25.049Z", "dateUpdated": "2026-11-04T18:21:29.026Z", "dateRejected": "2026-11-04T18:21:29.026Z"}, "containers": {"cna": {"rejectedReasons": [{"lang": "en", "value": "This CVE ID has been rejected or withdrawn by its CVE Numbering Authority."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-11-04T18:21:29.026Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["io_uring/net.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "41d24d2fb168fa05fcaf9ec4e55478411dbbf8e1", "status": "affected", "version": "ae98dbf43d755b4e111fcd086e53939bef3e9a1a", "versionType": "git"}, {"lessThan": "927d96f91c582b319d104ecf50ec935a8dc29193", "status": "affected", "version": "ae98dbf43d755b4e111fcd086e53939bef3e9a1a", "versionType": "git"}, {"lessThan": "2e70ea75c7bb38a6dc212975f887310f14f7c043", "status": "affected", "version": "ae98dbf43d755b4e111fcd086e53939bef3e9a1a", "versionType": "git"}, {"lessThan": "6028b543884f8735e057ec9eea4908cd61cab230", "status": "affected", "version": "ae98dbf43d755b4e111fcd086e53939bef3e9a1a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["io_uring/net.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"lessThan": "6.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nio_uring/net: don't overconsume buffers when using MSG_TRUNC\n\nWhen a recv/recvmsg is issued with MSG_TRUNC and the incoming packet is\nlarger than the provided buffer, the net layer returns the full length\nof the packet rather than the number of bytes actually copied into the\nbuffer. As a result, io_uring advances more of the provided buffer ring\nthan was actually filled. Use the actual filled region size to consume\nthe buffer, but still return the full size to preserve MSG_TRUNC\nsemantics.\n\nTake care with multishot, because that seems to already truncate the\nconsumption based on the available payload size.\n\nThis was reported in https://github.com/axboe/liburing/issues/1619.\n\n[axboe: fold in size_t unsigned fix]"}], "id": "CVE-2026-97618", "lastModified": "2026-10-19T10:17:38.773", "metrics": {}, "published": "2026-09-25T11:17:16.000", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2e70ea75c7bb38a6dc212975f887310f14f7c043"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/41d24d2fb168fa05fcaf9ec4e55478411dbbf8e1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6028b543884f8735e057ec9eea4908cd61cab230"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/927d96f91c582b319d104ecf50ec935a8dc29193"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: io_uring/net: don't overconsume buffers when using MSG_TRUNC", "id": "2541281", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541281"}, "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-805", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nio_uring/net: don't overconsume buffers when using MSG_TRUNC\nWhen a recv/recvmsg is issued with MSG_TRUNC and the incoming packet is\nlarger than the provided buffer, the net layer returns the full length\nof the packet rather than the number of bytes actually copied into the\nbuffer. As a result, io_uring advances more of the provided buffer ring\nthan was actually filled. Use the actual filled region size to consume\nthe buffer, but still return the full size to preserve MSG_TRUNC\nsemantics.\nTake care with multishot, because that seems to already truncate the\nconsumption based on the available payload size.\nThis was reported in https://github.com/axboe/liburing/issues/1619.\n[axboe: fold in size_t unsigned fix]", "A flaw was found in the Linux kernel's io_uring subsystem. This vulnerability allows a local user to cause a denial of service (DoS) or buffer corruption. When handling network receive operations configured with the packet truncation flag (MSG_TRUNC), the kernel calculates buffer consumption based on the total packet length instead of the bytes actually copied into the buffer. This mismatch causes io_uring to advance the buffer ring past the filled region, resulting in overconsumption of buffers and potential system instability."], "name": "CVE-2026-97618", "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": "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": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-97618\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97618\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97618.mbox"], "threat_severity": "Moderate"}