{"cve":"CVE-2022-50084","nvd":{"published":"2025-06-18T11:15:37.460","modified":"2026-06-17T05:22:43.470","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm raid: fix address sanitizer warning in raid_status\n\nThere is this warning when using a kernel with the address sanitizer\nand running this testsuite:\nhttps://gitlab.com/cki-project/kernel-tests/-/tree/main/storage/swraid/scsi_raid\n\n==================================================================\nBUG: KASAN: slab-out-of-bounds in raid_status+0x1747/0x2820 [dm_raid]\nRead of size 4 at addr ffff888079d2c7e8 by task lvcreate/13319\nCPU: 0 PID: 13319 Comm: lvcreate Not tainted 5.18.0-0.rc3.<snip> #1\nHardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011\nCall Trace:\n <TASK>\n dump_stack_lvl+0x6a/0x9c\n print_address_description.constprop.0+0x1f/0x1e0\n print_report.cold+0x55/0x244\n kasan_report+0xc9/0x100\n raid_status+0x1747/0x2820 [dm_raid]\n dm_ima_measure_on_table_load+0x4b8/0xca0 [dm_mod]\n table_load+0x35c/0x630 [dm_mod]\n ctl_ioctl+0x411/0x630 [dm_mod]\n dm_ctl_ioctl+0xa/0x10 [dm_mod]\n __x64_sys_ioctl+0x12a/0x1a0\n do_syscall_64+0x5b/0x80\n\nThe warning is caused by reading conf->max_nr_stripes in raid_status. The\ncode in raid_status reads mddev->private, casts it to struct r5conf and\nreads the entry max_nr_stripes.\n\nHowever, if we have different raid type than 4/5/6, mddev->private\ndoesn't point to struct r5conf; it may point to struct r0conf, struct\nr1conf, struct r10conf or struct mpconf. If we cast a pointer to one\nof these structs to struct r5conf, we will be reading invalid memory\nand KASAN warns about it.\n\nFix this bug by reading struct r5conf only if raid type is 4, 5 or 6.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":7.1},"cwes":["CWE-125"],"references":["https://git.kernel.org/stable/c/1ae0ebfb576b72c2ef400917a5484ebe7892d80b","https://git.kernel.org/stable/c/1fbeea217d8f297fe0e0956a1516d14ba97d0396","https://git.kernel.org/stable/c/49dba30638e091120256a9e89125340795f034dc","https://git.kernel.org/stable/c/4c233811a49578634d10a5e70a9dfa569d451e94","https://git.kernel.org/stable/c/90b006da40dd42285b24dd3c940d2c32aca9a70b"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:03:23.287444849+00:00"},"epss":{"cve":"CVE-2022-50084","score":0.00202,"percentile":0.10245,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}