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.
Published: 2026-10-18
Score: n/a
EPSS: n/a
KEV: No
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History

Sun, 18 Oct 2026 21:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416

Sun, 18 Oct 2026 16:00:00 +0000

Type Values Removed Values Added
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.
Title nvme: fix command effects log lifetime for multipath heads
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-10-18T15:49:01.538Z

Reserved: 2026-09-25T10:25:14.371Z

Link: CVE-2026-98814

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-18T16:17:35.540

Modified: 2026-10-18T16:17:35.540

Link: CVE-2026-98814

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-18T21:30:14Z

Weaknesses