{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68289",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.380Z",
        "datePublished": "2026-08-10T12:02:22.101Z",
        "dateUpdated": "2026-08-17T05:02:24.704Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T05:02:24.704Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix integer overflow in tipc_recvmsg() and tipc_recvstream()\n\nIn tipc_recvmsg(), the copy length is computed as:\n\n  copy = min_t(int, dlen - offset, buflen);\n\nbuflen is size_t but min_t(int, ...) casts it to int. When buflen\nexceeds INT_MAX (e.g. 0xFFFFFFFF via io_uring provided buffers), it\nwraps negative, wins the comparison, and the negative copy length\npropagates to simple_copy_to_iter() where int-to-size_t promotion\nmakes it SIZE_MAX, triggering a WARN_ON. tipc_recvstream() has the\nsame pattern.\n\n  Kernel panic - not syncing: kernel: panic_on_warn set ...\n  RIP: 0010:simple_copy_to_iter+0x9e/0xd0 (net/core/datagram.c:521)\n  Call Trace:\n   __skb_datagram_iter+0x123/0x8b0 (net/core/datagram.c:402)\n   skb_copy_datagram_iter+0x77/0x1a0 (net/core/datagram.c:534)\n   tipc_recvmsg+0x3d7/0xe80 (net/tipc/socket.c:1934)\n   io_recvmsg+0x47e/0xda0\n\nFix by changing min_t(int, ...) to min_t(size_t, ...) in both\nfunctions. The result is always <= (dlen - offset), which is bounded\nby TIPC maximum message size (0x1ffff bytes), so the implicit\nnarrowing on assignment to int copy is always safe."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/tipc/socket.c"
                    ],
                    "versions": [
                        {
                            "version": "e9f8b10101c6da3ab000a2fb17162374c9bd2c69",
                            "lessThan": "fe9bf32bb18f2d35789d4960fb007d1059bbaa38",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e9f8b10101c6da3ab000a2fb17162374c9bd2c69",
                            "lessThan": "47f42ff521b4eeb46e82f9a46a4783a99f7570d7",
                            "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/tipc/socket.c"
                    ],
                    "versions": [
                        {
                            "version": "4.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.12",
                            "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": "4.12",
                                    "versionEndExcluding": "7.1.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.12",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/fe9bf32bb18f2d35789d4960fb007d1059bbaa38"
                },
                {
                    "url": "https://git.kernel.org/stable/c/47f42ff521b4eeb46e82f9a46a4783a99f7570d7"
                }
            ],
            "title": "tipc: fix integer overflow in tipc_recvmsg() and tipc_recvstream()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}