CVE-2026-53227

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order,\nassuming \"reply\" is allocated before locking: it is freed after unlocking.\n\nIf \"reply\" allocation happens after locking the mutex and it fails,\n\"reply\" is left with an ERR_PTR, and execution jumps to the correspondent\ncleanup stage which will try to free an invalid pointer.\n\nFix this by setting the pointer to NULL after having saved its error\nvalue."}], "id": "CVE-2026-53227", "lastModified": "2026-11-06T17:18:14.973", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53227", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:22:47.210573Z", "version": "2.0.3"}}]}, "published": "2026-06-25T09:16:40.520", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/25fdf53698535fe8790237f5a8a9626791429785"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/895d1dd9057cde1687fa0f4286d47ceed0b82997"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/971b1b37774f13acc5add0a2843f8598446b8598"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e248fb2e680deb2bd37bac551b72638fe4938a76"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e3d509a1b71396e1452060dbf84a805fd1c3c549"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ecc55aad3390129a87106841f4b68bf3d70c9264"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ee30dd2909d8b98619f4341c70ec8dc8e155ab02"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net: openvswitch: fix possible kfree_skb of ERR_PTR", "id": "2492777", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492777"}, "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-763", "details": ["A flaw was found in the Linux kernel's Open vSwitch (OVS) component. This issue occurs due to incorrect error handling during the allocation of a 'reply' skb (socket buffer) after locking the ovs_mutex. If the allocation fails, an invalid pointer may be passed to kfree_skb, leading to a system crash and resulting in a Denial of Service (DoS)."], "name": "CVE-2026-53227", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "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": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53227\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53227\nhttps://lore.kernel.org/linux-cve-announce/2026062507-CVE-2026-53227-cda0@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[893f139b9a6c00c097b9082a90f3041cfb3a0d20,e248fb2e680deb2bd37bac551b72638fe4938a76)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[893f139b9a6c00c097b9082a90f3041cfb3a0d20,0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[893f139b9a6c00c097b9082a90f3041cfb3a0d20,971b1b37774f13acc5add0a2843f8598446b8598)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[893f139b9a6c00c097b9082a90f3041cfb3a0d20,25fdf53698535fe8790237f5a8a9626791429785)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[893f139b9a6c00c097b9082a90f3041cfb3a0d20,e3d509a1b71396e1452060dbf84a805fd1c3c549)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[893f139b9a6c00c097b9082a90f3041cfb3a0d20,ecc55aad3390129a87106841f4b68bf3d70c9264)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[893f139b9a6c00c097b9082a90f3041cfb3a0d20,895d1dd9057cde1687fa0f4286d47ceed0b82997)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[893f139b9a6c00c097b9082a90f3041cfb3a0d20,ee30dd2909d8b98619f4341c70ec8dc8e155ab02)"}}], "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": "generic", "value": "3.16"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.16)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.259,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.210,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.176,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.143,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.94,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.36,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.13,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[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": "2026-06-25T12:00:14.005239+00:00", "updated": "2026-08-13T13:30:17.329513+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}