CVE-2022-48894
iommu/arm-smmu-v3: Don't unregister on shutdown
Severity Score
"-"
*CVSS v-
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track
*SSVC
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
iommu/arm-smmu-v3: Don't unregister on shutdown
Similar to SMMUv2, this driver calls iommu_device_unregister() from the
shutdown path, which removes the IOMMU groups with no coordination
whatsoever with their users - shutdown methods are optional in device
drivers. This can lead to NULL pointer dereferences in those drivers'
DMA API calls, or worse.
Instead of calling the full arm_smmu_device_remove() from
arm_smmu_device_shutdown(), let's pick only the relevant function call -
arm_smmu_device_disable() - more or less the reverse of
arm_smmu_device_reset() - and call just that from the shutdown path.
*Credits:
N/A
CVSS Scores
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* Common Vulnerability Scoring System
SSVC
- Decision:Track
Exploitation
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* Organization's Worst-case Scenario
Timeline
- 2024-08-21 CVE Reserved
- 2024-08-21 CVE Published
- 2024-08-22 EPSS Updated
- 2024-09-12 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (3)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/57365a04c92126525a58bf7a1599ddfa832415e9 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://git.kernel.org/stable/c/ead3e6c79479890444c777fd329afc125fecde48 | 2023-01-18 | |
| https://git.kernel.org/stable/c/32ea2c57dc216b6ad8125fa680d31daa5d421c95 | 2023-01-13 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.1 < 6.1.7 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.1 < 6.1.7" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.1 < 6.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.1 < 6.2" | en |
Affected
| ||||||