CVE-2024-57949

Service interruption via premature interrupt re-enablement

Published Feb 9, 2025 · Updated May 23, 2026

Improper locking in affected Linux kernel releases allows local users to interrupt service through GICv3 ITS vCPU-affinity changes. The its_irq_set_vcpu_affinity() path uses an interrupt-disabling spinlock guard inside a section where irq_get_desc_lock() already disabled interrupts, then restores the wrong state by enabling interrupts before irq_put_desc_unlock(). Systems must exercise the GICv3 ITS vCPU-affinity path; the resulting inconsistent interrupt state emits a kernel warning and can disrupt availability.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in affected Linux kernel releases allows local users to interrupt service through GICv3 ITS vCPU-affinity changes. The its_irq_set_vcpu_affinity() path uses an interrupt-disabling spinlock guard inside a section where irq_get_desc_lock() already disabled interrupts, then restores the wrong state by enabling interrupts before irq_put_desc_unlock(). Systems must exercise the GICv3 ITS vCPU-affinity path; the resulting inconsistent interrupt state emits a kernel warning and can disrupt availability.

The record

CVE
CVE-2024-57949
Published
Feb 9, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 9, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2458f2362f695584bd824c922caa07ffc4fe0d5c <d7b0e89610dd45ac6cf0d6f99bfa9ccc787db344
  2. Affected versionversion=5c0fb9cb404a2efbbc319ff9d1b877cf4e47e950 <6c84ff2e788fce0099ee3e71a3ed258b1ca1a223
  3. Affected versionversion=6.10
  4. Affected versionversion=6.1.95 <6.1.127
  5. Affected versionversion=6.6.35 <6.6.74
  6. Affected versionversion=6.9.6 <6.10
  7. Affected versionversion=b97e8a2f7130a4b30d1502003095833d16c028b3 <35cb2c6ce7da545f3b5cb1e6473ad7c3a6f08310
  8. Affected versionversion=b97e8a2f7130a4b30d1502003095833d16c028b3 <93955a7788121ab5a0f7f27e988b2ed1135a4866
  9. Affected versionversion=c11039edbabdbccf0728844f1002d750d06f9eff

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2458f2362f695584bd824c922caa07ffc4fe0d5c <d7b0e89610dd45ac6cf0d6f99bfa9ccc787db344; version=5c0fb9cb404a2efbbc319ff9d1b877cf4e47e950 <6c84ff2e788fce0099ee3e71a3ed258b1ca1a223; version=6.10; version=6.1.95 <6.1.127; version=6.6.35 <6.6.74; version=6.9.6 <6.10; version=b97e8a2f7130a4b30d1502003095833d16c028b3 <35cb2c6ce7da545f3b5cb1e6473ad7c3a6f08310; version=b97e8a2f7130a4b30d1502003095833d16c028b3 <93955a7788121ab5a0f7f27e988b2ed1135a4866; version=c11039edbabdbccf0728844f1002d750d06f9eff

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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