CVE-2022-50084: dm raid: fix address sanitizer warning in raid_status
Vulnerability summary
CVE-2022-50084 is a high (CVSS 7.1) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 10.2% of scored vulnerabilities.
Not severe (CVSS 7.1, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 9 · Related 7Timeline
- 18-06-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: dm raid: fix address sanitizer warning in raid_status There is this warning when using a kernel with the address sanitizer and running this testsuite: https://gitlab.com/cki-project/kernel-tests/-/tree/main/storage/swraid/scsi_raid ================================================================== BUG: KASAN: slab-out-of-bounds in raid_status+0x1747/0x2820 [dm_raid] Read of size 4 at addr ffff888079d2c7e8 by task lvcreate/13319 CPU: 0 PID: 13319 Comm: lvcreate Not tainted 5.18.0-0.rc3.<snip> #1 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 Call Trace: <TASK> dump_stack_lvl+0x6a/0x9c print_address_description.constprop.0+0x1f/0x1e0 print_report.cold+0x55/0x244 kasan_report+0xc9/0x100 raid_status+0x1747/0x2820 [dm_raid] dm_ima_measure_on_table_load+0x4b8/0xca0 [dm_mod] table_load+0x35c/0x630 [dm_mod] ctl_ioctl+0x411/0x630 [dm_mod] dm_ctl_ioctl+0xa/0x10 [dm_mod] __x64_sys_ioctl+0x12a/0x1a0 do_syscall_64+0x5b/0x80 The warning is caused by reading conf->max_nr_stripes in raid_status. The code in raid_status reads mddev->private, casts it to struct r5conf and reads the entry max_nr_stripes. However, if we have different raid type than 4/5/6, mddev->private doesn't point to struct r5conf; it may point to struct r0conf, struct r1conf, struct r10conf or struct mpconf. If we cast a pointer to one of these structs to struct r5conf, we will be reading invalid memory and KASAN warns about it. Fix this bug by reading struct r5conf only if raid type is 4, 5 or 6.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS trend
Probability
0.20%
Chance of exploitation in the next 30 days
Percentile
10%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.20% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu112 products
- linuxAll versions (No fix recorded) | < 4.15.0-197.208 | < 5.4.0-132.148 | < 5.15.0-53.59
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 4.15.0-1143.155 | < 5.4.0-1089.97 | < 5.15.0-1023.27
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 3a1c1ef2fd62087c3d6521de217ddb9360776658, < 1ae0ebfb576b72c2ef400917a5484ebe7892d80b | ≥ 3a1c1ef2fd62087c3d6521de217ddb9360776658, < 90b006da40dd42285b24dd3c940d2c32aca9a70b | ≥ 3a1c1ef2fd62087c3d6521de217ddb9360776658, < b856ce5f4b55f752144baf17e9d5c415072652c5 | ≥ 3a1c1ef2fd62087c3d6521de217ddb9360776658, < cb583ca6125ac64c98e9d65128e95ebb5be7d322 | ≥ 3a1c1ef2fd62087c3d6521de217ddb9360776658, < 49dba30638e091120256a9e89125340795f034dc | ≥ 3a1c1ef2fd62087c3d6521de217ddb9360776658, < 4c233811a49578634d10a5e70a9dfa569d451e94 | ≥ 3a1c1ef2fd62087c3d6521de217ddb9360776658, < d8971b595d7adac3421c21f59918241f1574061e | ≥ 3a1c1ef2fd62087c3d6521de217ddb9360776658, < b4c6c07c92b6cba2bf3cb2dfa722debeaf8a8abe | ≥ 3a1c1ef2fd62087c3d6521de217ddb9360776658, < 1fbeea217d8f297fe0e0956a1516d14ba97d0396 | 4.8
- linux_kernel< 4.9.326 | ≥ 4.10, < 4.14.291 | ≥ 4.15, < 4.19.256 | ≥ 4.20, < 5.4.211 | ≥ 5.5, < 5.10.137 | ≥ 5.11, < 5.15.61 | ≥ 5.16, < 5.18.18 | ≥ 5.19, < 5.19.2
Debian1 product
- linux< 6.0.2-1
3 vendors · 115 products
