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ipv4: fix use-after-free in fib_nhc_update_mtu()

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-2026-74656

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": [
                        "include/net/route.h",
                        "net/ipv4/fib_semantics.c",
                        "net/ipv4/route.c"
                    ],
                    "versions": [
                        {
                            "version": "af7d6cce53694a88d6a1bb60c9a239a6a5144459",
                            "lessThan": "fd39e711866498ae94fcf9acf6f422a4f045b681",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "af7d6cce53694a88d6a1bb60c9a239a6a5144459",
                            "lessThan": "e1e602d6b22d5cb1641c4459c487eb18bf569e0a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "af7d6cce53694a88d6a1bb60c9a239a6a5144459",
                            "lessThan": "e00f7d2b5f2540a3415a229c982af7a25ff6362e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "af7d6cce53694a88d6a1bb60c9a239a6a5144459",
                            "lessThan": "dfe388da13aa784851e5ebbea90afbb099075761",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "af7d6cce53694a88d6a1bb60c9a239a6a5144459",
                            "lessThan": "5a28a4b22dde92f9d293b94236314b8d6181dc4a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "af7d6cce53694a88d6a1bb60c9a239a6a5144459",
                            "lessThan": "63996ffc594d128ccec8fc0983f91effd2d3adc4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "af7d6cce53694a88d6a1bb60c9a239a6a5144459",
                            "lessThan": "ed503eaad62f20cdd5122d7c3078a648a99c8f16",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "af7d6cce53694a88d6a1bb60c9a239a6a5144459",
                            "lessThan": "bc5bde9ce3cc36502839dfe98e068f7303a50982",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b427832009b97a3ee412ef643a80b15372a7754d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2b7e4c735933be79882aba2bed9afa789e03c62f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8d59c3a6376bbc6dd3f7303968a719ffba75a4f1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9b4869cf385aa16f89c0f019eed4ec4e36aa441c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ff34695ced21e2dfa04d0fa1c5f6c35011fa8117",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3.16.62",
                            "lessThan": "3.17",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.4.162",
                            "lessThan": "4.5",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.9.134",
                            "lessThan": "4.10",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.77",
                            "lessThan": "4.15",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.18.15",
                            "lessThan": "4.19",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }

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": [
                        "include/net/route.h",
                        "net/ipv4/fib_semantics.c",
                        "net/ipv4/route.c"
                    ],
                    "versions": [
                        {
                            "version": "4.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.265",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.216",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.152",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.104",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.45",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.9",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

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

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Sources read 9 Nov 07:39 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current