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net: fix fanout UAF in packet_release() via NETDEV_UP race

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-2026-31504

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/packet/af_packet.c"
                    ],
                    "versions": [
                        {
                            "version": "ce06b03e60fc19c680d1bf873e779bf11c2fc518",
                            "lessThan": "ee642b1962caa9aa231c01abbd58bc453ae6b66e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce06b03e60fc19c680d1bf873e779bf11c2fc518",
                            "lessThan": "42cfd7898eeed290c9fb73f732af1f7d6b0a703e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce06b03e60fc19c680d1bf873e779bf11c2fc518",
                            "lessThan": "1b4c03f8892d955385c202009af7485364731bb9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce06b03e60fc19c680d1bf873e779bf11c2fc518",
                            "lessThan": "654386baef228c2992dbf604c819e4c7c35fc71b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce06b03e60fc19c680d1bf873e779bf11c2fc518",
                            "lessThan": "75fe6db23705a1d55160081f7b37db9665b1880b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce06b03e60fc19c680d1bf873e779bf11c2fc518",
                            "lessThan": "d0c7cdc15fdf8c4f91aca1928e52295d175b6ec6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce06b03e60fc19c680d1bf873e779bf11c2fc518",
                            "lessThan": "ceccbfc6de720ad633519a226715989cfb065af1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce06b03e60fc19c680d1bf873e779bf11c2fc518",
                            "lessThan": "42156f93d123436f2a27c468f18c966b7e5db796",
                            "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/packet/af_packet.c"
                    ],
                    "versions": [
                        {
                            "version": "3.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.1",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.253",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.203",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.168",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.131",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.80",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.21",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.11",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

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Sources read 8 Nov 21:05 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current