CVE-2022-48724

iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping()

MEDIUM

5.5

CVSS Score

Published: June 20, 2024 at 11:13 AM UTC

Updated: June 17, 2026 at 05:16 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

v ≥ 5.7.114.14.190 ≤ v < 4.14.2654.19.135 ≤ v < 4.19.2285.11 ≤ v < 5.15.225.16 ≤ v < 5.16.85.4.54 ≤ v < 5.4.1785.7.11 ≤ v < 5.85.8 ≤ v < 5.10.995.8 ≤ v < 5.15.225.8 ≤ v < 5.16.85.8 ≤ v < 5.1736f7355545725c5e9400520ae33e6ee16cf78c0e3992c88d71ba79d956f2ed54e370e630b8750f44.14.190 4.19.135 5.17 rc1 5.17 rc2 5.4.54 5.7.11b4198ecddb87cd955aa9e024dd656af5ceaf6196c0c489e5430530a7021f4c889cd5931597e4b200e3beca48a45b5e0e6e6a4e0124276b8248dcc9bb

Vendor states this is fixed in 336d096b62bdc673e852b6b80d5072d7888ce85d (fixed)

Vendor states this is fixed in 5c43d46daa0d2928234dd2792ebebc35d29ee2d1 (fixed)

Vendor states this is fixed in 99e675d473eb8cf2deac1376a0f840222fc1adcf (fixed)

Vendor states this is fixed in 9d9995b0371e4e8c18d4f955479e5d47efe7b2d4 (fixed)

Vendor states this is fixed in a0c685ba99961b1dd894b2e470e692a539770f6d (fixed)

Vendor states this is fixed in a31cb1f0fb6caf46ffe88c41252b6b7a4ee062d9 (fixed)

Vendor states this is fixed in b62eceb5f8f08815fe3f945fc55bbf997c344ecd (fixed)

Vendor states this is fixed in 4.14.265 (unaffected)

Vendor states this is fixed in 4.19.228 (unaffected)

Vendor states this is fixed in 5.10.99 (unaffected)

Vendor states this is fixed in 5.15.22 (unaffected)

Vendor states this is fixed in 5.16.8 (unaffected)