{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"18e28817cb516b39de6281f6db9b0618b2cc7b42","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"adf0112d9b8acb03485624220b4934f69bf13369","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"a217715338fd48f72114725aa7a40e484a781ca7","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"b40877b8562c5720d0a7fce20729f56b75a3dede","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"6858933131d0dadac071c4d33335a9ea4b8e76cf","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"0455bef69028c65065f16bb04635591b2374249b","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"9be7fa7ead18a48940df7b59d993bbc8b9055c15","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"c490a0b5a4f36da3918181a8acdc6991d967c5f3","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"4.9.*","status":"unaffected","version":"4.9.327","versionType":"semver"},{"lessThanOrEqual":"4.14.*","status":"unaffected","version":"4.14.292","versionType":"semver"},{"lessThanOrEqual":"4.19.*","status":"unaffected","version":"4.19.312","versionType":"semver"},{"lessThanOrEqual":"5.4.*","status":"unaffected","version":"5.4.274","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.140","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.64","versionType":"semver"},{"lessThanOrEqual":"5.19.*","status":"unaffected","version":"5.19.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.0","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2022-49993","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nloop: Check for overflow while configuring loop\n\nThe userspace can configure a loop using an ioctl call, wherein\na configuration of type loop_config is passed (see lo_ioctl()'s\ncase on line 1550 of drivers/block/loop.c). This proceeds to call\nloop_configure() which in turn calls loop_set_status_from_info()\n(see line 1050 of loop.c), passing &config->info which is of type\nloop_info64*. This function then sets the appropriate values, like\nthe offset.\n\nloop_device has lo_offset of type loff_t (see line 52 of loop.c),\nwhich is typdef-chained to long long, whereas loop_info64 has\nlo_offset of type __u64 (see line 56 of include/uapi/linux/loop.h).\n\nThe function directly copies offset from info to the device as\nfollows (See line 980 of loop.c):\n\tlo->lo_offset = info->lo_offset;\n\nThis results in an overflow, which triggers a warning in iomap_iter()\ndue to a call to iomap_iter_done() which has:\n\tWARN_ON_ONCE(iter->iomap.offset > iter->pos);\n\nThus, check for negative value during loop_set_status_from_info().\n\nBug report: https://syzkaller.appspot.com/bug?id=c620fe14aac810396d3c3edc9ad73848bf69a29e","epss":{"date":"2026-11-05","percentile":0.16949,"score":0.00253},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793908813340,"publishedAt":1750244453487,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/18e28817cb516b39de6281f6db9b0618b2cc7b42"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/adf0112d9b8acb03485624220b4934f69bf13369"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/a217715338fd48f72114725aa7a40e484a781ca7"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/b40877b8562c5720d0a7fce20729f56b75a3dede"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/6858933131d0dadac071c4d33335a9ea4b8e76cf"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/0455bef69028c65065f16bb04635591b2374249b"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/9be7fa7ead18a48940df7b59d993bbc8b9055c15"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/c490a0b5a4f36da3918181a8acdc6991d967c5f3"}],"remediation":[],"revision":"a8177f2df7092263589b340bfd544b1cf86b5dae882b6b4566fdd4135e5d9b9d","sources":[{"modifiedAt":1793908813340,"name":"CNA: Linux","retrievedAt":1793909497621,"url":"https://www.cve.org/CVERecord?id=CVE-2022-49993"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793909519576,"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-49993"}],"ssvc":{"assessedAt":1793908353900,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"loop: Check for overflow while configuring loop","updatedAt":1793909519576}