# CVE-2026-98814: nvme: fix command effects log lifetime for multipath heads

CVE-2026-98814 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98814 (version 7.2.10-1), released October 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-98814
- Priority: Routine
- CVSS: 4.7 (Moderate)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 18, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98814

## Description

In the Linux kernel, the following vulnerability has been resolved:  nvme: fix command effects log lifetime for multipath heads  KASAN reported a use-after-free when an I/O passthrough command was sent through a multipath namespace head after the controller path that first created the head had been removed:    BUG: KASAN: slab-use-after-free in nvme_command_effects+0x192/0x200 [nvme_core]   Read of size 4 at addr ffff888141b14400 by task nvme/19811   nvme_command_effects+0x192/0x200 [nvme_core]   nvme_cmd_allowed+0x7e/0x1b0 [nvme_core]   nvme_user_cmd.constprop.0+0x1b5/0x450 [nvme_core]   nvme_ns_head_chr_ioctl+0xf4/0x2a0 [nvme_core]  Move the log cache to the subsystem, with one entry per command set. Both controllers and namespace heads hold subsystem references, keeping their log pointers valid until subsystem release.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.2.10-1 | [DEBIAN-CVE-2026-98814](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98814.md) | Oct 19, 2026 |

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Data as of 2026-11-09T19:38:12Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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