{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53006", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.377Z", "datePublished": "2026-06-24T16:29:17.691Z", "dateUpdated": "2026-09-16T12:04:21.297Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:32:35.427Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: fix possible UAF in icmpv6_rcv()\n\nCaching saddr and daddr before pskb_pull() is problematic\nsince skb->head can change.\n\nRemove these temporary variables:\n\n- We only access &ipv6_hdr(skb)->saddr and &ipv6_hdr(skb)->daddr\n when net_dbg_ratelimited() is called in the slow path.\n\n- Avoid potential future misuse after pskb_pull() call."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL"}, "scenarios": [{"lang": "en", "value": "AV:N - icmpv6_rcv() is reached by inbound IPv6 ICMPv6 packets through the normal network receive path. A remote IPv6 peer can send crafted ICMPv6 packets to a reachable host without local access.\nAC:L - The attacker can craft the ICMPv6 type, checksum, and fragmentation/non-linear skb layout needed to reach the stale-pointer path after pskb_pull(). There is no attacker-uncontrolled race required.\nPR:N - Inbound ICMPv6 processing occurs before any user authentication or privilege check. No local account or kernel capability is required to send the triggering packets.\nUI:N - No victim user action is required. The kernel processes the packets automatically on receive.\nS:U - The impact is within the vulnerable kernel/network stack security authority. This is not a guest-to-host escape or other cross-scope boundary bypass.\nC:H - The bug is a use-after-free of IPv6 address pointers into skb->head after pskb_pull() can reallocate and free that buffer. Under the required conservative kernel guidance, UAF is treated as high confidentiality impact due potential freed-kernel-memory disclosure.\nI:H - This is a kernel heap use-after-free in a remote packet-processing path. Under the required conservative kernel guidance, UAF is treated as high integrity impact because heap reuse/spraying can make UAFs exploitable beyond the immediate stale read.\nA:H - A remotely triggerable kernel UAF can produce an oops/panic or repeated fault, especially in debug/KASAN or hardened deployments. 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{"bugzilla": {"description": "kernel: ipv6: fix possible UAF in icmpv6_rcv()", "id": "2492363", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492363"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's IPv6 (Internet Protocol version 6) implementation. This vulnerability, a Use-After-Free (UAF) error, occurs due to incorrect caching of network packet addresses before a memory operation. An attacker could potentially exploit this flaw to cause memory corruption, which may lead to a denial of service or, in some scenarios, arbitrary code execution."], "name": "CVE-2026-53006", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53006\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53006\nhttps://lore.kernel.org/linux-cve-announce/2026062448-CVE-2026-53006-2b02@gregkh/T"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4b3418fba0fe819197e3359d5ddbef84ba2c59de,7bff2c8fe5c35ae58bf73104f53db3676e6e5d94)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4b3418fba0fe819197e3359d5ddbef84ba2c59de,aff0f28f5be803de2452ce702631c021fcd9ce8a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4b3418fba0fe819197e3359d5ddbef84ba2c59de,38bdbc897c0d83a3e2b925a51b69420f1feba29a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4b3418fba0fe819197e3359d5ddbef84ba2c59de,0069813e6ca9309eca78022bcb3aeb1e9ef90a12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4b3418fba0fe819197e3359d5ddbef84ba2c59de,1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4b3418fba0fe819197e3359d5ddbef84ba2c59de,7c66b368c6ff453f99cb39d84af93e908e51eef2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4b3418fba0fe819197e3359d5ddbef84ba2c59de,085e31a811ef234ef8c3e219c4636dfebfe7e10f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4b3418fba0fe819197e3359d5ddbef84ba2c59de,f996edd7615e686ada141b7f3395025729ff8ccb)"}}], "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": "4.4"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,4.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.10.258,5.10.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.209,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.175,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.141,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.91,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.33,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0.10,7.0.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "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": "2026-06-24T19:45:05.748846+00:00", "updated": "2026-08-12T06:45:04.793174+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}