CVE-2022-49746

Summary

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: imx-sdma: Fix a possible memory leak in sdma_transfer_init

If the function sdma_load_context() fails, the sdma_desc will be freed, but the allocated desc->bd is forgot to be freed.

We already met the sdma_load_context() failure case and the log as below: [ 450.699064] imx-sdma 30bd0000.dma-controller: Timeout waiting for CH0 ready …

In this case, the desc->bd will not be freed without this change.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux21420841a554dae8a193cd3454ba91d913cfc320 < 80ee99e52936b2c04cc37b17a14b2ae2f9d282acaffected
LinuxLinux21420841a554dae8a193cd3454ba91d913cfc320 < dbe634ce824329d8f14079c3e9f8f11670894becaffected
LinuxLinux21420841a554dae8a193cd3454ba91d913cfc320 < bd0050b7ffa87c7b260d563646af612f4112a778affected
LinuxLinux21420841a554dae8a193cd3454ba91d913cfc320 < 43acd767bd90c5d4172ce7fee5d9007a9a08dea9affected
LinuxLinux21420841a554dae8a193cd3454ba91d913cfc320 < ce4745a6b8016fae74c95dcd457d4ceef7d98af1affected
LinuxLinux21420841a554dae8a193cd3454ba91d913cfc320 < 1417f59ac0b02130ee56c0c50794b9b257be3d17affected
LinuxLinux4.19affected
LinuxLinux0 < 4.19unaffected
LinuxLinux4.19.272 <= 4.19.*unaffected
LinuxLinux5.4.231 <= 5.4.*unaffected
LinuxLinux5.10.167 <= 5.10.*unaffected
LinuxLinux5.15.92 <= 5.15.*unaffected
LinuxLinux6.1.10 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References