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CVE-2023-54007· NVD / CVE Program· CNA Linux

vmci_host: fix a race condition in vmci_host_poll() causing GPF

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
  • Fixed version: Linux Linux 2053e93ac15519ed1f1fe6eba79a33a4963be4a3, 67e35824f861a05b44b19d38e16a83f653bd9d92, 770d30b1355c6c8879973dd054fca9168def182c.

Low priority for now. Upgrade to Linux Linux 2053e93ac15519ed1f1fe6eba79a33a4963be4a3, 67e35824f861a05b44b19d38e16a83f653bd9d92, 770d30b1355c6c8879973dd054fca9168def182c or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: vmci_host: fix a race condition in vmci_host_poll() causing GPF During fuzzing, a general protection fault is observed in vmci_host_poll(). general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf] RIP: 0010:__lock_acquire+0xf3/0x5e00 kernel/locking/lockdep.c:4926 <- omitting registers -> Call Trace: <TASK> lock_acquire+0x1a4/0x4a0 kernel/locking/lockdep.c:5672 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xb3/0x100 kernel/locking/spinlock.c:162 add_wait_queue+0x3d/0x260 kernel/sched/wait.c:22 poll_wait include/linux/poll.h:49 [inline] vmci_host_poll+0xf8/0x2b0 drivers/misc/vmw_vmci/vmci_host.c:174 vfs_poll include/linux/poll.h:88 [inline] do_pollfd fs/select.c:873 [inline] do_poll fs/select.c:921 [inline] do_sys_poll+0xc7c/0x1aa0 fs/select.c:1015 __do_sys_ppoll fs/select.c:1121 [inline] __se_sys_ppoll+0x2cc/0x330 fs/select.c:1101 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4e/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x46/0xb0 Example thread interleaving that causes the general protection fault is as follows: CPU1 (vmci_host_poll) CPU2 (vmci_host_do_init_context) ----- ----- // Read uninitialized context context = vmci_host_dev->context; // Initialize context vmci_host_dev->context = vmci_ctx_create(); vmci_host_dev->ct_type = VMCIOBJ_CONTEXT; if (vmci_host_dev->ct_type == VMCIOBJ_CONTEXT) { // Dereferencing the wrong pointer poll_wait(..., &context->host_context); } In this scenario, vmci_host_poll() reads vmci_host_dev->context first, and then reads vmci_host_dev->ct_type to check that vmci_host_dev->context is initialized. However, since these two reads are not atomically executed, there is a chance of a race condition as described above. To fix this race condition, read vmci_host_dev->context after checking the value of vmci_host_dev->ct_type so that vmci_host_poll() always reads an initialized context.

—No exploit Fix available
Published
Dec 24, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 11th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.9affected
    • 8bf503991f87e32ea42a7bd69b79ba084fddc5d7 and later · before 2053e93ac15519ed1f1fe6eba79a33a4963be4a3affected · git
    • 8bf503991f87e32ea42a7bd69b79ba084fddc5d7 and later · before ca0f4ad2b7a36c799213ef0a213eb977a51e03dcaffected · git
    • 8bf503991f87e32ea42a7bd69b79ba084fddc5d7 and later · before 85b4aa4eb2e3a0da111fd0a1cdbf00f986ac6b6baffected · git
    • 8bf503991f87e32ea42a7bd69b79ba084fddc5d7 and later · before 770d30b1355c6c8879973dd054fca9168def182caffected · git
    • 8bf503991f87e32ea42a7bd69b79ba084fddc5d7 and later · before d22b2a35729cb1de311cb650cd67518a24e13fc9affected · git
    • 8bf503991f87e32ea42a7bd69b79ba084fddc5d7 and later · before 67e35824f861a05b44b19d38e16a83f653bd9d92affected · git
    • 8bf503991f87e32ea42a7bd69b79ba084fddc5d7 and later · before ab64bd32b9fac27ff4737d63711b9db5e5462448affected · git
    • 8bf503991f87e32ea42a7bd69b79ba084fddc5d7 and later · before ae13381da5ff0e8e084c0323c3cc0a945e43e9c7affected · git
    • before 3.9not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.37-16.1.37-1
Debian:13linuxbefore 6.3.7-16.3.7-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2023-54005Dec 24, 2025 · binder: fix memory leak in binder_init()
    0Monitor
  • ← EarlierCVE-2023-54006Dec 24, 2025 · af_unix: Fix data-race around unix_tot_inflight.
    0Monitor
  • Later →CVE-2023-54008Dec 24, 2025 · virtio_vdpa: build affinity masks conditionally
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux2053e93ac15519ed1f1fe6eba79a33a4963be4a3Vendor (CNA)
Linux Linux67e35824f861a05b44b19d38e16a83f653bd9d92Vendor (CNA)
Linux Linux770d30b1355c6c8879973dd054fca9168def182cVendor (CNA)
Linux Linux85b4aa4eb2e3a0da111fd0a1cdbf00f986ac6b6bVendor (CNA)
Linux Linuxab64bd32b9fac27ff4737d63711b9db5e5462448Vendor (CNA)
Linux Linuxae13381da5ff0e8e084c0323c3cc0a945e43e9c7Vendor (CNA)
Linux Linuxca0f4ad2b7a36c799213ef0a213eb977a51e03dcVendor (CNA)
Linux Linuxd22b2a35729cb1de311cb650cd67518a24e13fc9Vendor (CNA)
debian:linux6.1.37-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

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No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records