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🛡️ CVE-2023-54024 — kernel

⚪ Unknown ✅ No Known Exploit NVD
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

KVM: Destroy target device if coalesced MMIO unregistration fails

In the Linux kernel, the following vulnerability has been resolved:

KVM: Destroy target device if coalesced MMIO unregistration fails

Destroy and free the target coalesced MMIO device if unregistering said

device fails. As clearly noted in the code, kvm_io_bus_unregister_dev()

does not destroy the target device.

BUG: memory leak

unreferenced object 0xffff888112a54880 (size 64):

comm "syz-executor.2", pid 5258, jiffies 4297861402 (age 14.129s)

hex dump (first 32 bytes):

38 c7 67 15 00 c9 ff ff 38 c7 67 15 00 c9 ff ff 8.g.....8.g.....

e0 c7 e1 83 ff ff ff ff 00 30 67 15 00 c9 ff ff .........0g.....

backtrace:

[<0000000006995a8a>] kmalloc include/linux/slab.h:556 [inline]

[<0000000006995a8a>] kzalloc include/linux/slab.h:690 [inline]

[<0000000006995a8a>] kvm_vm_ioctl_register_coalesced_mmio+0x8e/0x3d0 arch/x86/kvm/../../../virt/kvm/coalesced_mmio.c:150

[<00000000022550c2>] kvm_vm_ioctl+0x47d/0x1600 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3323

[<000000008a75102f>] vfs_ioctl fs/ioctl.c:46 [inline]

[<000000008a75102f>] file_ioctl fs/ioctl.c:509 [inline]

[<000000008a75102f>] do_vfs_ioctl+0xbab/0x1160 fs/ioctl.c:696

[<0000000080e3f669>] ksys_ioctl+0x76/0xa0 fs/ioctl.c:713

[<0000000059ef4888>] __do_sys_ioctl fs/ioctl.c:720 [inline]

[<0000000059ef4888>] __se_sys_ioctl fs/ioctl.c:718 [inline]

[<0000000059ef4888>] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:718

[<000000006444fa05>] do_syscall_64+0x9f/0x4e0 arch/x86/entry/common.c:290

[<000000009a4ed50b>] entry_SYSCALL_64_after_hwframe+0x49/0xbe

BUG: leak checking failed

Affected software

CVE-2023-54024 is recorded against 2 packages.

  • kernel (from 5.16.0 up to 6.2.3)
  • unknown

Timeline and source

Published on 24 December 2025 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

Other advisories for this package

kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2023-54024 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-12-24
Updated 2026-08-20
Modified 2026-08-12
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel 5.16.0 6.2.3
unknown — —

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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