CVE-2022-49720 (GCVE-0-2022-49720)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:24 – Updated: 2026-05-11 19:05
VLAI
Title
block: Fix handling of offline queues in blk_mq_alloc_request_hctx()
Summary
In the Linux kernel, the following vulnerability has been resolved: block: Fix handling of offline queues in blk_mq_alloc_request_hctx() This patch prevents that test nvme/004 triggers the following: UBSAN: array-index-out-of-bounds in block/blk-mq.h:135:9 index 512 is out of range for type 'long unsigned int [512]' Call Trace: show_stack+0x52/0x58 dump_stack_lvl+0x49/0x5e dump_stack+0x10/0x12 ubsan_epilogue+0x9/0x3b __ubsan_handle_out_of_bounds.cold+0x44/0x49 blk_mq_alloc_request_hctx+0x304/0x310 __nvme_submit_sync_cmd+0x70/0x200 [nvme_core] nvmf_connect_io_queue+0x23e/0x2a0 [nvme_fabrics] nvme_loop_connect_io_queues+0x8d/0xb0 [nvme_loop] nvme_loop_create_ctrl+0x58e/0x7d0 [nvme_loop] nvmf_create_ctrl+0x1d7/0x4d0 [nvme_fabrics] nvmf_dev_write+0xae/0x111 [nvme_fabrics] vfs_write+0x144/0x560 ksys_write+0xb7/0x140 __x64_sys_write+0x42/0x50 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:32 UTC
CWE
  • CWE-129 - Improper Validation of Array Index
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6971 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 20e4d813931961fe26d26a1e98b3aba6ec00b130 , < 7fa28a7c3d74933a4fc22d341b60927952f31c19 (git)
Affected: 20e4d813931961fe26d26a1e98b3aba6ec00b130 , < b5e65ef044d627effdc2599040b6d204e003f955 (git)
Affected: 20e4d813931961fe26d26a1e98b3aba6ec00b130 , < b202a0bd2580ee5b0453772c46d464152fafff73 (git)
Affected: 20e4d813931961fe26d26a1e98b3aba6ec00b130 , < 14dc7a18abbe4176f5626c13c333670da8e06aa1 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.16
Unaffected: 0 , < 4.16 (semver)
Unaffected: 5.10.124 , ≤ 5.10.* (semver)
Unaffected: 5.15.49 , ≤ 5.15.* (semver)
Unaffected: 5.18.6 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49720.json",
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      "cve": "CVE-2022-49720",
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      "initial_release_date": "2025-02-27T03:02:17Z",
      "product_status:known_affected": "392",
      "product_status:known_not_affected": "392",
      "product_status:recommended": "293",
      "source": "SUSE CSAF VEX",
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      "title": "SUSE CVE CVE-2022-49720",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2025/cve-2022-49720.json",
      "version": "72"
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                      },
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                      },
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                    "description": "CWE-129 Improper Validation of Array Index",
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                ]
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              "dateUpdated": "2025-10-01T16:54:12.074Z",
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        "assignerShortName": "Linux",
        "cveId": "CVE-2022-49720",
        "datePublished": "2025-02-26T02:24:34.194Z",
        "dateReserved": "2025-02-26T02:21:30.445Z",
        "dateUpdated": "2025-10-01T19:36:44.080Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
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    }
  }
}



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Sightings

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Nomenclature

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Vulnerability timeline

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