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tipc: reject invalid and unexpected GRP_ACK_MSG to prevent bc_ackers underflow

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

cve-program · CVE-2026-98550

Published

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/tipc/group.c"
                    ],
                    "versions": [
                        {
                            "version": "2f487712b89376fce267223bbb0db93d393d4b09",
                            "lessThan": "edc6593c442278fceff0120e8cc58bc592168c35",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2f487712b89376fce267223bbb0db93d393d4b09",
                            "lessThan": "9b94a90651e1fa573c6ac6a5a6b269d5874df2c0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2f487712b89376fce267223bbb0db93d393d4b09",
                            "lessThan": "507a27435b2bb1f22e3a3674f6a6553eb815021b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2f487712b89376fce267223bbb0db93d393d4b09",
                            "lessThan": "80a9ccfc24d3776ef6753a57315e726475fac7d7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2f487712b89376fce267223bbb0db93d393d4b09",
                            "lessThan": "478fb08d0c2a53002a721d22b8d6681ec971d90f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2f487712b89376fce267223bbb0db93d393d4b09",
                            "lessThan": "12cc3a1eac5a2a06b67a7b85f0f48ff241a94d1b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2f487712b89376fce267223bbb0db93d393d4b09",
                            "lessThan": "b0e517961f09b9f60d338d1ea4e17aacdbf206f0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2f487712b89376fce267223bbb0db93d393d4b09",
                            "lessThan": "99cc2a62e07a44a22254d7beca9ef1f8ad886d0d",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/tipc/group.c"
                    ],
                    "versions": [
                        {
                            "version": "4.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.271",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "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": "6.12.112",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.55",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.9",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
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Sources read 26 Oct 04:30 UTC · 271 of 271 readable · 269 fully read · documentation 464/464 current