rxrpc: Fix the ACK parser to extract the SACK table for parsing_CVE-2026-53151

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix the ACK parser to extract the SACK table for parsing\n\nFix modification of the received skbuff in rxrpc_input_soft_acks() and a\npotential incorrect access of the buffer in a fragmented UDP packet (the\npacket would probably have to be deliberately pre-generated as fragmented)\nwhen AF_RXRPC tries to extract the contents of the SACK table by copying\nout the contents of the SACK table into a buffer before attempting to parse\n\nAF_RXRPC assumes that it can just call skb_condense() and then validly\naccess the SACK table from skb->data and that it will be a flat buffer -\nbut skb_condense() can silently fail to do anything under some\ncircumstances.\n\nNote that whilst rxrpc_input_soft_acks() should be able to parse extended\nACKs, the rest of AF_RXRPC doesn't currently support that.\n\nFurther, there's then no need to call skb_condense() in rxrpc_input_ack(),\nso don't.",
    "published": "2026-06-25T08:38:36.187Z",
    "modified": "2026-06-28T06:39:33.520Z",
    "type": "cve",
    "title": "rxrpc: Fix the ACK parser to extract the SACK table for parsing",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/566c4c1244de50fbff1f89ff93c9d7b0fc256db4\nhttps://git.kernel.org/stable/c/224298450be5c04d2a6ea1c2a94669d7ebf65d00\nhttps://git.kernel.org/stable/c/333b6d5bb9f87827ac2639c737bf9613dbae7253",
    "id": "CVE-2026-53151",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux d57a3a151660902091491ac2633134e1be92557f\nLinux Linux d57a3a151660902091491ac2633134e1be92557f\nLinux Linux d57a3a151660902091491ac2633134e1be92557f\nLinux Linux 6.2",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "d57a3a151660902091491ac2633134e1be92557f",
    "vendor": "Linux",
    "ai_description": "A vulnerability in the Linux kernel's rxrpc module allows for potential incorrect access of the buffer in a fragmented UDP packet, leading to a denial of service or code execution.",
    "ai_severity": "Critical",
    "ai_vendor": "Linux",
    "ai_product": "Linux Kernel",
    "ai_version": "6.2, d57a3a151660902091491ac2633134e1be92557f",
    "ai_score": 9.8
}