{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43457", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:56.010Z", "datePublished": "2026-05-08T14:22:20.725Z", "dateUpdated": "2026-05-11T22:24:57.488Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:24:57.488Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmctp: i2c: fix skb memory leak in receive path\n\nWhen 'midev->allow_rx' is false, the newly allocated skb isn't consumed\nby netif_rx(), it needs to free the skb directly."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/mctp/mctp-i2c.c"], "versions": [{"version": "f5b8abf9fc3dacd7529d363e26fe8230935d65f8", "lessThan": "0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb", "status": "affected", "versionType": "git"}, {"version": "f5b8abf9fc3dacd7529d363e26fe8230935d65f8", "lessThan": "d7900a43b0a314a645ca0a2adf45928dbc7001f4", "status": "affected", "versionType": "git"}, {"version": "f5b8abf9fc3dacd7529d363e26fe8230935d65f8", "lessThan": "9f81be2ab9d8e4744871bfb3e868ef413413829f", "status": "affected", "versionType": "git"}, {"version": "f5b8abf9fc3dacd7529d363e26fe8230935d65f8", "lessThan": "1ec54187e1aa40a4cfa2b265e9a311179f24b98d", "status": "affected", "versionType": "git"}, {"version": "f5b8abf9fc3dacd7529d363e26fe8230935d65f8", "lessThan": "1b1be322342a6b0085bf6ee52235e5ac9834ec25", "status": "affected", "versionType": "git"}, {"version": "f5b8abf9fc3dacd7529d363e26fe8230935d65f8", "lessThan": "e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/mctp/mctp-i2c.c"], "versions": [{"version": "5.18", "status": "affected"}, {"version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.167", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.130", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.78", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.19", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.9", "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": "5.18", "versionEndExcluding": "6.1.167"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.6.130"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.12.78"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.18.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.19.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb"}, {"url": "https://git.kernel.org/stable/c/d7900a43b0a314a645ca0a2adf45928dbc7001f4"}, {"url": "https://git.kernel.org/stable/c/9f81be2ab9d8e4744871bfb3e868ef413413829f"}, {"url": "https://git.kernel.org/stable/c/1ec54187e1aa40a4cfa2b265e9a311179f24b98d"}, {"url": "https://git.kernel.org/stable/c/1b1be322342a6b0085bf6ee52235e5ac9834ec25"}, {"url": "https://git.kernel.org/stable/c/e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69"}], "title": "mctp: i2c: fix skb memory leak in receive path", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmctp: i2c: fix skb memory leak in receive path\n\nWhen 'midev->allow_rx' is false, the newly allocated skb isn't consumed\nby netif_rx(), it needs to free the skb directly."}], "id": "CVE-2026-43457", "lastModified": "2026-05-12T14:10:27.343", "metrics": {}, "published": "2026-05-08T15:16:58.517", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1b1be322342a6b0085bf6ee52235e5ac9834ec25"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1ec54187e1aa40a4cfa2b265e9a311179f24b98d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9f81be2ab9d8e4744871bfb3e868ef413413829f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d7900a43b0a314a645ca0a2adf45928dbc7001f4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: mctp: i2c: fix skb memory leak in receive path", "id": "2468163", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468163"}, "csaw": false, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's Management Component Transport Protocol (MCTP) over I2C receive path. When the `midev->allow_rx` flag is false, a newly allocated network buffer (skb) is not properly freed. This memory leak can lead to a gradual exhaustion of system memory, potentially allowing a local attacker to cause a Denial of Service (DoS)."], "name": "CVE-2026-43457", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "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": "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43457\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43457\nhttps://lore.kernel.org/linux-cve-announce/2026050800-CVE-2026-43457-85fe@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b8abf9fc3dacd7529d363e26fe8230935d65f8,0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b8abf9fc3dacd7529d363e26fe8230935d65f8,d7900a43b0a314a645ca0a2adf45928dbc7001f4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b8abf9fc3dacd7529d363e26fe8230935d65f8,9f81be2ab9d8e4744871bfb3e868ef413413829f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b8abf9fc3dacd7529d363e26fe8230935d65f8,e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b8abf9fc3dacd7529d363e26fe8230935d65f8,1ec54187e1aa40a4cfa2b265e9a311179f24b98d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b8abf9fc3dacd7529d363e26fe8230935d65f8,1b1be322342a6b0085bf6ee52235e5ac9834ec25)"}}], "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": "5.18"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.18)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.167,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.130,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.78,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.19,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.9,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "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": "2026-05-08T17:00:16.201428+00:00", "updated": "2026-05-09T16:30:37.777365+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}