{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45847", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.078Z", "datePublished": "2026-05-27T12:15:07.344Z", "dateUpdated": "2026-05-27T12:15:07.344Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-27T12:15:07.344Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: remove WARN_ON_ONCE when accessing forward path array\n\nAlthough unlikely, recent support for IPIP tunnels increases chances of\nreaching this WARN_ON_ONCE if userspace manages to build a sufficiently\nlong forward path.\n\nRemove it."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/core/dev.c"], "versions": [{"version": "ddb94eafab8b597b05904c8277194ea2d6357fa9", "lessThan": "548244c2f542aa0ad49453e9306e715a3877bc44", "status": "affected", "versionType": "git"}, {"version": "ddb94eafab8b597b05904c8277194ea2d6357fa9", "lessThan": "dcf9b3c90e5560339649d088836529883fb509f3", "status": "affected", "versionType": "git"}, {"version": "ddb94eafab8b597b05904c8277194ea2d6357fa9", "lessThan": "9464ca7a6e56ad1ebf48b2ad5c16871edfad10c6", "status": "affected", "versionType": "git"}, {"version": "ddb94eafab8b597b05904c8277194ea2d6357fa9", "lessThan": "959ea349c7e2d4edf07b6838ca7e59345fe61a08", "status": "affected", "versionType": "git"}, {"version": "ddb94eafab8b597b05904c8277194ea2d6357fa9", "lessThan": "50422613185d505201167e8bdd2f2700790d5db6", "status": "affected", "versionType": "git"}, {"version": "ddb94eafab8b597b05904c8277194ea2d6357fa9", "lessThan": "a78d055ba7c31103ad02f8eceb0c452e154d2660", "status": "affected", "versionType": "git"}, {"version": "ddb94eafab8b597b05904c8277194ea2d6357fa9", "lessThan": "008e7a7c293b30bc43e4368dac6ea3808b75a572", "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/core/dev.c"], "versions": [{"version": "5.13", "status": "affected"}, {"version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.202", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.165", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.128", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.75", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.14", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.4", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "5.13", "versionEndExcluding": "5.15.202"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.1.165"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.6.128"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.12.75"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.18.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.19.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/548244c2f542aa0ad49453e9306e715a3877bc44"}, {"url": "https://git.kernel.org/stable/c/dcf9b3c90e5560339649d088836529883fb509f3"}, {"url": "https://git.kernel.org/stable/c/9464ca7a6e56ad1ebf48b2ad5c16871edfad10c6"}, {"url": "https://git.kernel.org/stable/c/959ea349c7e2d4edf07b6838ca7e59345fe61a08"}, {"url": "https://git.kernel.org/stable/c/50422613185d505201167e8bdd2f2700790d5db6"}, {"url": "https://git.kernel.org/stable/c/a78d055ba7c31103ad02f8eceb0c452e154d2660"}, {"url": "https://git.kernel.org/stable/c/008e7a7c293b30bc43e4368dac6ea3808b75a572"}], "title": "net: remove WARN_ON_ONCE when accessing forward path array", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: remove WARN_ON_ONCE when accessing forward path array\n\nAlthough unlikely, recent support for IPIP tunnels increases chances of\nreaching this WARN_ON_ONCE if userspace manages to build a sufficiently\nlong forward path.\n\nRemove it."}], "id": "CVE-2026-45847", "lastModified": "2026-05-27T14:48:31.480", "metrics": {}, "published": "2026-05-27T14:16:56.577", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/008e7a7c293b30bc43e4368dac6ea3808b75a572"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/50422613185d505201167e8bdd2f2700790d5db6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/548244c2f542aa0ad49453e9306e715a3877bc44"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9464ca7a6e56ad1ebf48b2ad5c16871edfad10c6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/959ea349c7e2d4edf07b6838ca7e59345fe61a08"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a78d055ba7c31103ad02f8eceb0c452e154d2660"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dcf9b3c90e5560339649d088836529883fb509f3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: net: remove WARN_ON_ONCE when accessing forward path array", "id": "2482161", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482161"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1284", "details": ["A flaw was found in the Linux kernel's network component, specifically related to handling Internet Protocol over Internet Protocol (IPIP) tunnels. A local user could potentially craft a network configuration with a very long forward path, which could lead to an unexpected condition within the kernel. This condition could potentially cause system instability or a minor denial of service."], "name": "CVE-2026-45847", "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": "Out of support scope", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "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"}], "public_date": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-45847\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-45847\nhttps://lore.kernel.org/linux-cve-announce/2026052707-CVE-2026-45847-433e@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ddb94eafab8b597b05904c8277194ea2d6357fa9,548244c2f542aa0ad49453e9306e715a3877bc44)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ddb94eafab8b597b05904c8277194ea2d6357fa9,dcf9b3c90e5560339649d088836529883fb509f3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ddb94eafab8b597b05904c8277194ea2d6357fa9,9464ca7a6e56ad1ebf48b2ad5c16871edfad10c6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ddb94eafab8b597b05904c8277194ea2d6357fa9,959ea349c7e2d4edf07b6838ca7e59345fe61a08)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ddb94eafab8b597b05904c8277194ea2d6357fa9,50422613185d505201167e8bdd2f2700790d5db6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ddb94eafab8b597b05904c8277194ea2d6357fa9,a78d055ba7c31103ad02f8eceb0c452e154d2660)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ddb94eafab8b597b05904c8277194ea2d6357fa9,008e7a7c293b30bc43e4368dac6ea3808b75a572)"}}], "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": "semver", "value": "5.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.202,5.16.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.165,6.2.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.128,6.7.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.75,6.13.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.14,6.19.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.4,6.20.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "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": "2026-05-27T20:15:15.902488+00:00", "updated": "2026-05-28T17:45:22.941993+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}