{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2022-48847", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-16T11:38:08.911Z", "datePublished": "2024-07-16T12:25:15.804Z", "dateUpdated": "2024-09-11T17:34:09.039Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-07-16T12:25:15.804Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatch_queue: Fix filter limit check\n\nIn watch_queue_set_filter(), there are a couple of places where we check\nthat the filter type value does not exceed what the type_filter bitmap\ncan hold. One place calculates the number of bits by:\n\n if (tf[i].type >= sizeof(wfilter->type_filter) * 8)\n\nwhich is fine, but the second does:\n\n if (tf[i].type >= sizeof(wfilter->type_filter) * BITS_PER_LONG)\n\nwhich is not. This can lead to a couple of out-of-bounds writes due to\na too-large type:\n\n (1) __set_bit() on wfilter->type_filter\n (2) Writing more elements in wfilter->filters[] than we allocated.\n\nFix this by just using the proper WATCH_TYPE__NR instead, which is the\nnumber of types we actually know about.\n\nThe bug may cause an oops looking something like:\n\n BUG: KASAN: slab-out-of-bounds in watch_queue_set_filter+0x659/0x740\n Write of size 4 at addr ffff88800d2c66bc by task watch_queue_oob/611\n ...\n Call Trace:\n \n dump_stack_lvl+0x45/0x59\n print_address_description.constprop.0+0x1f/0x150\n ...\n kasan_report.cold+0x7f/0x11b\n ...\n watch_queue_set_filter+0x659/0x740\n ...\n __x64_sys_ioctl+0x127/0x190\n do_syscall_64+0x43/0x90\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\n Allocated by task 611:\n kasan_save_stack+0x1e/0x40\n __kasan_kmalloc+0x81/0xa0\n watch_queue_set_filter+0x23a/0x740\n __x64_sys_ioctl+0x127/0x190\n do_syscall_64+0x43/0x90\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\n The buggy address belongs to the object at ffff88800d2c66a0\n which belongs to the cache kmalloc-32 of size 32\n The buggy address is located 28 bytes inside of\n 32-byte region [ffff88800d2c66a0, ffff88800d2c66c0)" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "include/linux/watch_queue.h", "kernel/watch_queue.c" ], "versions": [ { "version": "c73be61cede5", "lessThan": "648895da69ce", "status": "affected", "versionType": "git" }, { "version": "c73be61cede5", "lessThan": "1b09f28f70a5", "status": "affected", "versionType": "git" }, { "version": "c73be61cede5", "lessThan": "b36588ebbcef", "status": "affected", "versionType": "git" }, { "version": "c73be61cede5", "lessThan": "c993ee0f9f81", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "include/linux/watch_queue.h", "kernel/watch_queue.c" ], "versions": [ { "version": "5.8", "status": "affected" }, { "version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.106", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.29", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.16.15", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.17", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/648895da69ced90ca770fd941c3d9479a9d72c16" }, { "url": "https://git.kernel.org/stable/c/1b09f28f70a5046acd64138075ae3f095238b045" }, { "url": "https://git.kernel.org/stable/c/b36588ebbcef74583824c08352e75838d6fb4ff2" }, { "url": "https://git.kernel.org/stable/c/c993ee0f9f81caf5767a50d1faeba39a0dc82af2" } ], "title": "watch_queue: Fix filter limit check", "x_generator": { "engine": "bippy-c9c4e1df01b2" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T15:25:01.608Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/648895da69ced90ca770fd941c3d9479a9d72c16", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/1b09f28f70a5046acd64138075ae3f095238b045", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/b36588ebbcef74583824c08352e75838d6fb4ff2", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/c993ee0f9f81caf5767a50d1faeba39a0dc82af2", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2022-48847", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T16:56:35.105751Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:34:09.039Z" } } ] } }