{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-48913","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-08-21T06:06:23.294Z","datePublished":"2024-08-22T01:31:34.860Z","dateUpdated":"2025-05-04T08:25:59.343Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T08:25:59.343Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nblktrace: fix use after free for struct blk_trace\n\nWhen tracing the whole disk, 'dropped' and 'msg' will be created\nunder 'q->debugfs_dir' and 'bt->dir' is NULL, thus blk_trace_free()\nwon't remove those files. What's worse, the following UAF can be\ntriggered because of accessing stale 'dropped' and 'msg':\n\n==================================================================\nBUG: KASAN: use-after-free in blk_dropped_read+0x89/0x100\nRead of size 4 at addr ffff88816912f3d8 by task blktrace/1188\n\nCPU: 27 PID: 1188 Comm: blktrace Not tainted 5.17.0-rc4-next-20220217+ #469\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-4\nCall Trace:\n <TASK>\n dump_stack_lvl+0x34/0x44\n print_address_description.constprop.0.cold+0xab/0x381\n ? blk_dropped_read+0x89/0x100\n ? blk_dropped_read+0x89/0x100\n kasan_report.cold+0x83/0xdf\n ? blk_dropped_read+0x89/0x100\n kasan_check_range+0x140/0x1b0\n blk_dropped_read+0x89/0x100\n ? blk_create_buf_file_callback+0x20/0x20\n ? kmem_cache_free+0xa1/0x500\n ? do_sys_openat2+0x258/0x460\n full_proxy_read+0x8f/0xc0\n vfs_read+0xc6/0x260\n ksys_read+0xb9/0x150\n ? vfs_write+0x3d0/0x3d0\n ? fpregs_assert_state_consistent+0x55/0x60\n ? exit_to_user_mode_prepare+0x39/0x1e0\n do_syscall_64+0x35/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x7fbc080d92fd\nCode: ce 20 00 00 75 10 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 1\nRSP: 002b:00007fbb95ff9cb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000000\nRAX: ffffffffffffffda RBX: 00007fbb95ff9dc0 RCX: 00007fbc080d92fd\nRDX: 0000000000000100 RSI: 00007fbb95ff9cc0 RDI: 0000000000000045\nRBP: 0000000000000045 R08: 0000000000406299 R09: 00000000fffffffd\nR10: 000000000153afa0 R11: 0000000000000293 R12: 00007fbb780008c0\nR13: 00007fbb78000938 R14: 0000000000608b30 R15: 00007fbb780029c8\n </TASK>\n\nAllocated by task 1050:\n kasan_save_stack+0x1e/0x40\n __kasan_kmalloc+0x81/0xa0\n do_blk_trace_setup+0xcb/0x410\n __blk_trace_setup+0xac/0x130\n blk_trace_ioctl+0xe9/0x1c0\n blkdev_ioctl+0xf1/0x390\n __x64_sys_ioctl+0xa5/0xe0\n do_syscall_64+0x35/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nFreed by task 1050:\n kasan_save_stack+0x1e/0x40\n kasan_set_track+0x21/0x30\n kasan_set_free_info+0x20/0x30\n __kasan_slab_free+0x103/0x180\n kfree+0x9a/0x4c0\n __blk_trace_remove+0x53/0x70\n blk_trace_ioctl+0x199/0x1c0\n blkdev_common_ioctl+0x5e9/0xb30\n blkdev_ioctl+0x1a5/0x390\n __x64_sys_ioctl+0xa5/0xe0\n do_syscall_64+0x35/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nThe buggy address belongs to the object at ffff88816912f380\n which belongs to the cache kmalloc-96 of size 96\nThe buggy address is located 88 bytes inside of\n 96-byte region [ffff88816912f380, ffff88816912f3e0)\nThe buggy address belongs to the page:\npage:000000009a1b4e7c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0f\nflags: 0x17ffffc0000200(slab|node=0|zone=2|lastcpupid=0x1fffff)\nraw: 0017ffffc0000200 ffffea00044f1100 dead000000000002 ffff88810004c780\nraw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000\npage dumped because: kasan: bad access detected\n\nMemory state around the buggy address:\n ffff88816912f280: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n ffff88816912f300: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n>ffff88816912f380: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n                                                    ^\n ffff88816912f400: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n ffff88816912f480: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n=================================================================="}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/blktrace.c"],"versions":[{"version":"c0ea57608b691d6cde8aff23e11f9858a86b5918","lessThan":"78acc7dbd84a8c173a08584750845c31611160f2","status":"affected","versionType":"git"},{"version":"c0ea57608b691d6cde8aff23e11f9858a86b5918","lessThan":"6418634238ade86f2b08192928787f39d8afb58c","status":"affected","versionType":"git"},{"version":"c0ea57608b691d6cde8aff23e11f9858a86b5918","lessThan":"30939293262eb433c960c4532a0d59c4073b2b84","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/blktrace.c"],"versions":[{"version":"5.12","status":"affected"},{"version":"0","lessThan":"5.12","status":"unaffected","versionType":"semver"},{"version":"5.15.27","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.16.13","lessThanOrEqual":"5.16.*","status":"unaffected","versionType":"semver"},{"version":"5.17","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.15.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.16.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.17"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/78acc7dbd84a8c173a08584750845c31611160f2"},{"url":"https://git.kernel.org/stable/c/6418634238ade86f2b08192928787f39d8afb58c"},{"url":"https://git.kernel.org/stable/c/30939293262eb433c960c4532a0d59c4073b2b84"}],"title":"blktrace: fix use after free for struct blk_trace","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2022-48913","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T15:33:53.963718Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-12T17:33:11.780Z"}}]}}