CVE-2026-68289

{"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": "2026-10-03T10:55:45.132Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-03T10:55:45.132Z"}, "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": "9fd4f92671146b068809b6c34b50346cb30cf8f7", "status": "affected", "versionType": "git"}, {"version": "e9f8b10101c6da3ab000a2fb17162374c9bd2c69", "lessThan": "93580911f02d1f4a506ec0a6fc4354140c53ffe8", "status": "affected", "versionType": "git"}, {"version": "e9f8b10101c6da3ab000a2fb17162374c9bd2c69", "lessThan": "1b6066313b9b8fac870483bf7a26d6bd56579747", "status": "affected", "versionType": "git"}, {"version": "e9f8b10101c6da3ab000a2fb17162374c9bd2c69", "lessThan": "7364014fdc289225229eb08de8bcbf4580e78e4d", "status": "affected", "versionType": "git"}, {"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": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "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": "4.12", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.18.53"}, {"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/9fd4f92671146b068809b6c34b50346cb30cf8f7"}, {"url": "https://git.kernel.org/stable/c/93580911f02d1f4a506ec0a6fc4354140c53ffe8"}, {"url": "https://git.kernel.org/stable/c/1b6066313b9b8fac870483bf7a26d6bd56579747"}, {"url": "https://git.kernel.org/stable/c/7364014fdc289225229eb08de8bcbf4580e78e4d"}, {"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"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/tipc/socket.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "9fd4f92671146b068809b6c34b50346cb30cf8f7", "status": "affected", "version": "e9f8b10101c6da3ab000a2fb17162374c9bd2c69", "versionType": "git"}, {"lessThan": "93580911f02d1f4a506ec0a6fc4354140c53ffe8", "status": "affected", "version": "e9f8b10101c6da3ab000a2fb17162374c9bd2c69", "versionType": "git"}, {"lessThan": "1b6066313b9b8fac870483bf7a26d6bd56579747", "status": "affected", "version": "e9f8b10101c6da3ab000a2fb17162374c9bd2c69", "versionType": "git"}, {"lessThan": "7364014fdc289225229eb08de8bcbf4580e78e4d", "status": "affected", "version": "e9f8b10101c6da3ab000a2fb17162374c9bd2c69", "versionType": "git"}, {"lessThan": "fe9bf32bb18f2d35789d4960fb007d1059bbaa38", "status": "affected", "version": "e9f8b10101c6da3ab000a2fb17162374c9bd2c69", "versionType": "git"}, {"lessThan": "47f42ff521b4eeb46e82f9a46a4783a99f7570d7", "status": "affected", "version": "e9f8b10101c6da3ab000a2fb17162374c9bd2c69", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/tipc/socket.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.12"}, {"lessThan": "4.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "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\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."}], "id": "CVE-2026-68289", "lastModified": "2026-10-03T11:17:36.700", "metrics": {}, "published": "2026-08-10T13:20:18.233", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1b6066313b9b8fac870483bf7a26d6bd56579747"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/47f42ff521b4eeb46e82f9a46a4783a99f7570d7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7364014fdc289225229eb08de8bcbf4580e78e4d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/93580911f02d1f4a506ec0a6fc4354140c53ffe8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9fd4f92671146b068809b6c34b50346cb30cf8f7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fe9bf32bb18f2d35789d4960fb007d1059bbaa38"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: Denial of Service in TIPC due to integer overflow", "id": "2513161", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513161"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-131", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ntipc: fix integer overflow in tipc_recvmsg() and tipc_recvstream()\nIn tipc_recvmsg(), the copy length is computed as:\ncopy = min_t(int, dlen - offset, buflen);\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.\nKernel panic - not syncing: kernel: panic_on_warn set ...\nRIP: 0010:simple_copy_to_iter+0x9e/0xd0 (net/core/datagram.c:521)\nCall Trace:\n__skb_datagram_iter+0x123/0x8b0 (net/core/datagram.c:402)\nskb_copy_datagram_iter+0x77/0x1a0 (net/core/datagram.c:534)\ntipc_recvmsg+0x3d7/0xe80 (net/tipc/socket.c:1934)\nio_recvmsg+0x47e/0xda0\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.", "A flaw was found in the Linux kernel. An integer overflow vulnerability exists within the Transparent Inter-Process Communication (TIPC) subsystem, specifically in the `tipc_recvmsg()` and `tipc_recvstream()` functions. This issue occurs when a buffer length value exceeds the maximum integer size, leading to a negative copy length. A local attacker could exploit this flaw to trigger a kernel panic, resulting in a Denial of Service (DoS) for the system."], "name": "CVE-2026-68289", "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"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T12:02:22Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68289\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68289\nhttps://git.kernel.org/stable/c/47f42ff521b4eeb46e82f9a46a4783a99f7570d7\nhttps://git.kernel.org/stable/c/fe9bf32bb18f2d35789d4960fb007d1059bbaa38"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e9f8b10101c6da3ab000a2fb17162374c9bd2c69,fe9bf32bb18f2d35789d4960fb007d1059bbaa38)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e9f8b10101c6da3ab000a2fb17162374c9bd2c69,47f42ff521b4eeb46e82f9a46a4783a99f7570d7)"}}], "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": "4.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.12)"}}, {"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": "2026-08-10T17:30:17.999778+00:00", "updated": "2026-08-12T18:15:03.105253+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-131", "CWE-680"]}