{"id":"CVE-2025-21832","revision":"8f3fe045ecfb437db13398809ed7bc7e","records":[{"revision":"8f3fe045ecfb437db13398809ed7bc7e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-21832","aliases":[],"title":"block: don't revert iter for -EIOCBQUEUED","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nblock: don't revert iter for -EIOCBQUEUED\n\nblkdev_read_iter() has a few odd checks, like gating the position and\ncount adjustment on whether or not the result is bigger-than-or-equal to\nzero (where bigger than makes more sense), and not checking the return\nvalue of blkdev_direct_IO() before doing an iov_iter_revert(). The\nlatter can lead to attempting to revert with a negative value, which\nwhen passed to iov_iter_revert() as an unsigned value will lead to\nthrowing a WARN_ON() because unroll is bigger than MAX_RW_COUNT.\n\nBe sane and don't revert for -EIOCBQUEUED, like what is done in other\nspots.","state":0,"publishedAt":"2025-03-06T16:22:34.125+00:00","modifiedAt":"2026-10-15T21:51:53.845+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"block/fops.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3e1f941dd9f33776b3df4e30f741fe445ff773f3\",\n                            \"lessThan\": \"6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3e1f941dd9f33776b3df4e30f741fe445ff773f3\",\n                            \"lessThan\": \"84671b0630ccb46ae9f1f99a45c7d63ffcd6a474\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3e1f941dd9f33776b3df4e30f741fe445ff773f3\",\n                            \"lessThan\": \"68f16d3034a06661245ecd22f0d586a8b4e7c473\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3e1f941dd9f33776b3df4e30f741fe445ff773f3\",\n                            \"lessThan\": \"a58f136bad29f9ae721a29d98c042fddbee22f77\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3e1f941dd9f33776b3df4e30f741fe445ff773f3\",\n                            \"lessThan\": \"b13ee668e8280ca5b07f8ce2846b9957a8a10853\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"block/fops.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.17\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.17\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.129\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.78\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.14\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.13.3\",\n                            \"lessThanOrEqual\": \"6.13.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.14\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb","https://git.kernel.org/stable/c/84671b0630ccb46ae9f1f99a45c7d63ffcd6a474","https://git.kernel.org/stable/c/68f16d3034a06661245ecd22f0d586a8b4e7c473","https://git.kernel.org/stable/c/a58f136bad29f9ae721a29d98c042fddbee22f77","https://git.kernel.org/stable/c/b13ee668e8280ca5b07f8ce2846b9957a8a10853"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-21832","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-21832","identifiers":["CVE-2025-21832"]},"retained":false,"historicalAffected":[]}],"coverage":[]}