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🛡️ CVE-2023-52559 — kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

iommu/vt-d: Avoid memory allocation in iommu_suspend()

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

iommu/vt-d: Avoid memory allocation in iommu_suspend()

The iommu_suspend() syscore suspend callback is invoked with IRQ disabled.

Allocating memory with the GFP_KERNEL flag may re-enable IRQs during

the suspend callback, which can cause intermittent suspend/hibernation

problems with the following kernel traces:

Calling iommu_suspend+0x0/0x1d0

------------[ cut here ]------------

WARNING: CPU: 0 PID: 15 at kernel/time/timekeeping.c:868 ktime_get+0x9b/0xb0

...

CPU: 0 PID: 15 Comm: rcu_preempt Tainted: G U E 6.3-intel #r1

RIP: 0010:ktime_get+0x9b/0xb0

...

Call Trace:

<IRQ>

tick_sched_timer+0x22/0x90

? __pfx_tick_sched_timer+0x10/0x10

__hrtimer_run_queues+0x111/0x2b0

hrtimer_interrupt+0xfa/0x230

__sysvec_apic_timer_interrupt+0x63/0x140

sysvec_apic_timer_interrupt+0x7b/0xa0

</IRQ>

<TASK>

asm_sysvec_apic_timer_interrupt+0x1f/0x30

...

------------[ cut here ]------------

Interrupts enabled after iommu_suspend+0x0/0x1d0

WARNING: CPU: 0 PID: 27420 at drivers/base/syscore.c:68 syscore_suspend+0x147/0x270

CPU: 0 PID: 27420 Comm: rtcwake Tainted: G U W E 6.3-intel #r1

RIP: 0010:syscore_suspend+0x147/0x270

...

Call Trace:

<TASK>

hibernation_snapshot+0x25b/0x670

hibernate+0xcd/0x390

state_store+0xcf/0xe0

kobj_attr_store+0x13/0x30

sysfs_kf_write+0x3f/0x50

kernfs_fop_write_iter+0x128/0x200

vfs_write+0x1fd/0x3c0

ksys_write+0x6f/0xf0

__x64_sys_write+0x1d/0x30

do_syscall_64+0x3b/0x90

entry_SYSCALL_64_after_hwframe+0x72/0xdc

Given that only 4 words memory is needed, avoid the memory allocation in

iommu_suspend().

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: None.
  • Availability impact: High — total loss, or loss the attacker controls.

Affected software

CVE-2023-52559 is recorded against 2 packages.

  • kernel (from 6.2.0 up to 6.5.7)
  • linux-kernel

Timeline and source

Published on 2 March 2024 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

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-2023-52559 on other distributions

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

Details

Severity Medium
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-03-02
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 6.2.0 6.5.7
linux-kernel — —

Similar Threats

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