# CVE-2022-49720: linux: In the Linux kernel, the following vulnerability has been resolved:  block: Fix handling of offline queues in blk_mq_...

CVE-2022-49720 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49720, released February 26, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-49720
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0030
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 26, 2025

## Description

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

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.18.14-1 | [DEBIAN-CVE-2022-49720](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49720.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.18.14-1 | [DEBIAN-CVE-2022-49720](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49720.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.18.14-1 | [DEBIAN-CVE-2022-49720](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49720.md) | Feb 26, 2025 |

---

Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.