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The W=1 builds were\nreporting this warning:\n\ndrivers/block/rnbd/rnbd-srv.c: In function 'process_msg_open.isra':\ndrivers/block/rnbd/rnbd-srv.c:616:51: warning: '%s' directive output may be truncated writing up to 254 bytes into a region of size between 0 and 4095 [-Wformat-truncation=]\n 616 | snprintf(full_path, PATH_MAX, \"%s/%s\",\n | ^~\nIn function 'rnbd_srv_get_full_path',\n inlined from 'process_msg_open.isra' at drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block/rnbd/rnbd-srv.c:616:17: note: 'snprintf' output between 2 and 4351 bytes into a destination of size 4096\n 616 | snprintf(full_path, PATH_MAX, \"%s/%s\",\n | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n 617 | dev_search_path, dev_name);\n | ~~~~~~~~~~~~~~~~~~~~~~~~~~\n\nTo fix this, unconditionally check for truncation (as was already done\nfor the case where \"%SESSNAME%\" was present)."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: block/rnbd-srv: Comprueba si hay un desbordamiento de cadena improbable. Dado que \"dev_search_path\" t\u00e9cnicamente puede ser tan grande como PATH_MAX, exist\u00eda el riesgo de truncamiento al copiarlo y una segunda cadena en \" full_path\" ya que tambi\u00e9n ten\u00eda un tama\u00f1o PATH_MAX. Las compilaciones W=1 informaban esta advertencia: drivers/block/rnbd/rnbd-srv.c: En funci\u00f3n 'process_msg_open.isra': drivers/block/rnbd/rnbd-srv.c:616:51: advertencia: '% La salida de la directiva s se puede truncar escribiendo hasta 254 bytes en una regi\u00f3n de tama\u00f1o entre 0 y 4095 [-Wformat-truncation=] 616 | snprintf(full_path, PATH_MAX, \"%s/%s\", | ^~ En la funci\u00f3n 'rnbd_srv_get_full_path', insertada desde 'process_msg_open.isra' en drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block /rnbd/rnbd-srv.c:616:17: nota: 'snprintf' genera entre 2 y 4351 bytes en un destino de tama\u00f1o 4096 616 | snprintf(full_path, PATH_MAX, \"%s/%s\", | ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 617 | dev_search_path, dev_name); | ~~~~~~~ ~~~~~~~~~~~~~~~~~~~ Para solucionar este problema, verifique incondicionalmente el truncamiento (como ya se hizo en el caso en el que \"%SESSNAME%\" estaba presente)."}], "id": "CVE-2023-52618", "lastModified": "2025-04-04T14:51:32.453", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-03-18T11:15:09.110", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5b9ea86e662035a886ccb5c76d56793cba618827"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/95bc866c11974d3e4a9d922275ea8127ff809cf7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a2c6206f18104fba7f887bf4dbbfe4c41adc4339"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/af7bbdac89739e2e7380387fda598848d3b7010f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f6abd5e17da33eba15df2bddc93413e76c2b55f7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5b9ea86e662035a886ccb5c76d56793cba618827"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/95bc866c11974d3e4a9d922275ea8127ff809cf7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a2c6206f18104fba7f887bf4dbbfe4c41adc4339"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/af7bbdac89739e2e7380387fda598848d3b7010f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f6abd5e17da33eba15df2bddc93413e76c2b55f7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: block/rnbd-srv: Check for unlikely string overflow", "id": "2270086", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2270086"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N", "status": "draft"}, "cwe": "CWE-121", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nblock/rnbd-srv: Check for unlikely string overflow\nSince \"dev_search_path\" can technically be as large as PATH_MAX,\nthere was a risk of truncation when copying it and a second string\ninto \"full_path\" since it was also PATH_MAX sized. The W=1 builds were\nreporting this warning:\ndrivers/block/rnbd/rnbd-srv.c: In function 'process_msg_open.isra':\ndrivers/block/rnbd/rnbd-srv.c:616:51: warning: '%s' directive output may be truncated writing up to 254 bytes into a region of size between 0 and 4095 [-Wformat-truncation=]\n616 | snprintf(full_path, PATH_MAX, \"%s/%s\",\n| ^~\nIn function 'rnbd_srv_get_full_path',\ninlined from 'process_msg_open.isra' at drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block/rnbd/rnbd-srv.c:616:17: note: 'snprintf' output between 2 and 4351 bytes into a destination of size 4096\n616 | snprintf(full_path, PATH_MAX, \"%s/%s\",\n| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n617 | dev_search_path, dev_name);\n| ~~~~~~~~~~~~~~~~~~~~~~~~~~\nTo fix this, unconditionally check for truncation (as was already done\nfor the case where \"%SESSNAME%\" was present)."], "name": "CVE-2023-52618", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-03-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52618\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52618\nhttps://lore.kernel.org/linux-cve-announce/20240318102117.2839904-8-lee@kernel.org/T"], "threat_severity": "Low"}