cve-2021-47040
Vulnerability from cvelistv5
Published
2024-02-28 08:13
Modified
2024-11-04 11:58
Severity ?
EPSS score ?
Summary
io_uring: fix overflows checks in provide buffers
References
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As Linus pointed out previous attempt did nothing\nuseful, see d81269fecb8ce (\"io_uring: fix provide_buffers sign extension\").\n\nDo that with help of check_\u003cop\u003e_overflow helpers. And fix struct\nio_provide_buf::len type, as it doesn\u0027t make much sense to keep it\nsigned." } ], "providerMetadata": { "dateUpdated": "2024-11-04T11:58:15.435Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/cbbc13b115b8f18e0a714d89f87fbdc499acfe2d" }, { "url": "https://git.kernel.org/stable/c/51bf90901952aaac564bbdb36b2b503050c53dd9" }, { "url": "https://git.kernel.org/stable/c/84b8c266c4bfe9ed5128e13253c388deb74b1b03" }, { "url": "https://git.kernel.org/stable/c/38134ada0ceea3e848fe993263c0ff6207fd46e7" } ], "title": "io_uring: fix overflows checks in provide buffers", "x_generator": { "engine": "bippy-9e1c9544281a" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2021-47040", "datePublished": "2024-02-28T08:13:46.557Z", "dateReserved": "2024-02-27T18:42:55.968Z", "dateUpdated": "2024-11-04T11:58:15.435Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2021-47040\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-28T09:15:39.993\",\"lastModified\":\"2024-02-28T14:06:45.783\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nio_uring: fix overflows checks in provide buffers\\n\\nColin reported before possible overflow and sign extension problems in\\nio_provide_buffers_prep(). As Linus pointed out previous attempt did nothing\\nuseful, see d81269fecb8ce (\\\"io_uring: fix provide_buffers sign extension\\\").\\n\\nDo that with help of check_\u003cop\u003e_overflow helpers. And fix struct\\nio_provide_buf::len type, as it doesn\u0027t make much sense to keep it\\nsigned.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: io_uring: soluciona comprobaciones de desbordamiento en los buffers de suministro que Colin inform\u00f3 antes de posibles problemas de desbordamiento y extensi\u00f3n de firma en io_provide_buffers_prep(). Como Linus se\u00f1al\u00f3 que el intento anterior no hizo nada \u00fatil, consulte d81269fecb8ce (\\\"io_uring: corrige la extensi\u00f3n de signo provide_buffers\\\"). Haga esto con la ayuda de los ayudantes check__overflow. Y corrija el tipo struct io_provide_buf::len, ya que no tiene mucho sentido mantenerlo firmado.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/38134ada0ceea3e848fe993263c0ff6207fd46e7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/51bf90901952aaac564bbdb36b2b503050c53dd9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/84b8c266c4bfe9ed5128e13253c388deb74b1b03\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cbbc13b115b8f18e0a714d89f87fbdc499acfe2d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}" } }
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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