iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping()
Priority LOW 24CWE-401Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 4 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-401.
Summary
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping() After commit e3beca48a45b ("irqdomain/treewide: Keep firmware node unconditionally allocated"). For tear down scenario, fn is only freed after fail to allocate ir_domain, though it also should be freed in case dmar_enable_qi returns error. Besides free fn, irq_domain and ir_msi_domain need to be removed as well if intel_setup_irq_remapping fails to enable queued invalidation. Improve the rewinding path by add out_free_ir_domain and out_free_fwnode lables per Baolu's suggestion.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00236 14th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.14.265, 4.19.228, 5.4.178 +5Red Hat: 4 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.14.190 to before 4.14.265; 4.19.135 to before 4.19.228; 5.4.54 to before 5.4.178; 5.7.11 to before 5.8 | 4.14.265, 4.19.228, 5.4.178, 5.8 | Patch available | CNA |
| Linux | Linux | 5.8 and later | 4.14.265, 4.19.228, 5.4.178, 5.10.99, 5.15.22, 5.16.8, 5.17 | Patch available | CNA |
- Linux VendorLinux Affected 4.14.190 to before 4.14.265; 4.19.135 to before 4.19.228; 5.4.54 to before 5.4.178; 5.7.11 to before 5.8 Fixed in 4.14.265, 4.19.228, 5.4.178, 5.8 Patch available CNA
- Linux VendorLinux Affected 5.8 and later Fixed in 4.14.265, 4.19.228, 5.4.178, 5.10.99, 5.15.22, 5.16.8, 5.17 Patch available CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.14.190 to before 4.14.265; 4.19.135 to before 4.19.228; 5.4.54 to before 5.4.178; 5.7.11 to before 5.8; 5.8 to before 5.10.99; 5.11 to before 5.15.22; 5.16 to before 5.16.8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:* | 5.17 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:* | 5.17 rc2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.14.190 to before 4.14.265; 4.19.135 to before 4.19.228; 5.4.54 to before 5.4.178; 5.7.11 to before 5.8; 5.8 to before 5.10.99; 5.11 to before 5.15.22; 5.16 to before 5.16.8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:* Versions 5.17 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:* Versions 5.17 rc2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.14.265, 4.19.228, 5.4.178, 5.8
- Fix · CNA Linux (Linux) Fixed in 4.14.265, 4.19.228, 5.4.178, 5.10.99, 5.15.22, 5.16.8, 5.17
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
Timeline
- 2026-10-02 Threatist record created from CVE-2022-48724
- 2026-10-03 Alias added: GHSA-5jhp-6hhp-5q5g
References
Patch 7
- https://git.kernel.org/stable/c/a0c685ba99961b1dd894b2e470e692a539770f6d
- https://git.kernel.org/stable/c/a31cb1f0fb6caf46ffe88c41252b6b7a4ee062d9
- https://git.kernel.org/stable/c/5c43d46daa0d2928234dd2792ebebc35d29ee2d1
- https://git.kernel.org/stable/c/9d9995b0371e4e8c18d4f955479e5d47efe7b2d4
- https://git.kernel.org/stable/c/336d096b62bdc673e852b6b80d5072d7888ce85d
- https://git.kernel.org/stable/c/b62eceb5f8f08815fe3f945fc55bbf997c344ecd
- https://git.kernel.org/stable/c/99e675d473eb8cf2deac1376a0f840222fc1adcf
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Sources
- CVE-2022-48724 · CVE Program
- CVE-2022-48724 · NVD
- FIRST EPSS
- GHSA-5jhp-6hhp-5q5g · GitHub Advisory Database · CC BY 4.0
- CVE-2022-48724 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences