{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23453",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:46.020Z",
        "datePublished": "2026-04-03T15:15:35.549Z",
        "dateUpdated": "2026-08-05T12:21:53.011Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T12:21:53.011Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ti: icssg-prueth: Fix memory leak in XDP_DROP for non-zero-copy mode\n\nPage recycling was removed from the XDP_DROP path in emac_run_xdp() to\navoid conflicts with AF_XDP zero-copy mode, which uses xsk_buff_free()\ninstead.\n\nHowever, this causes a memory leak when running XDP programs that drop\npackets in non-zero-copy mode (standard page pool mode). The pages are\nnever returned to the page pool, leading to OOM conditions.\n\nFix this by handling cleanup in the caller, emac_rx_packet().\nWhen emac_run_xdp() returns ICSSG_XDP_CONSUMED for XDP_DROP, the\ncaller now recycles the page back to the page pool. The zero-copy\npath, emac_rx_packet_zc() already handles cleanup correctly with\nxsk_buff_free()."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:N - The vulnerable path is native RX packet processing in the TI ICSSG Ethernet driver, reached by packets arriving on the network interface. In a reasonable XDP firewall/drop deployment, a remote sender can supply packets that the installed XDP program drops.\nAC:L - Once the interface is running with a non-zero-copy XDP program that returns XDP_DROP, triggering the leak only requires sending matching packets. There is no race, timing window, or fragile memory-layout dependency.\nPR:N - The attacker does not need to load or attach the XDP program in the highest-impact scenario; the target is already configured with an XDP drop program. The triggering packets can be unauthenticated network traffic.\nUI:N - No victim user action is required during exploitation. Packet receipt and NAPI RX processing occur automatically on the running interface.\nS:U - The impact remains within the same kernel and host security authority. This is not a VM escape, IOMMU bypass, or cross-scope boundary violation.\nC:N - The bug is an unrecycled page-pool buffer leak on XDP_DROP, not an out-of-bounds access, use-after-free, or information disclosure. No attacker-readable data is exposed by this flaw.\nI:N - The leak does not corrupt memory or provide a write primitive. It only loses references to RX pages that should have been returned to the page pool.\nA:H - Each dropped packet in the affected mode can permanently leak a page, and sustained unauthenticated traffic can drive the system into OOM. On embedded or network-gateway deployments this can cause loss of service, process termination, watchdog reset, or system unavailability."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/ti/icssg/icssg_common.c"
                    ],
                    "versions": [
                        {
                            "version": "7a64bb388df3cf091afdd047c701039a13acd3b4",
                            "lessThan": "d16d57dedcb69c1a1257e0638f8698ce1f0ccbe5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7a64bb388df3cf091afdd047c701039a13acd3b4",
                            "lessThan": "719d3e71691db7c4f1658ba5a6d1472928121594",
                            "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/ethernet/ti/icssg/icssg_common.c"
                    ],
                    "versions": [
                        {
                            "version": "6.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.10",
                            "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": "6.19",
                                    "versionEndExcluding": "6.19.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.19",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d16d57dedcb69c1a1257e0638f8698ce1f0ccbe5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/719d3e71691db7c4f1658ba5a6d1472928121594"
                }
            ],
            "title": "net: ti: icssg-prueth: Fix memory leak in XDP_DROP for non-zero-copy mode",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}