CVE-2022-50482

Summary

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

iommu/vt-d: Clean up si_domain in the init_dmars() error path

A splat from kmem_cache_destroy() was seen with a kernel prior to commit ee2653bbe89d ("iommu/vt-d: Remove domain and devinfo mempool") when there was a failure in init_dmars(), because the iommu_domain cache still had objects. While the mempool code is now gone, there still is a leak of the si_domain memory if init_dmars() fails. So clean up si_domain in the init_dmars() error path.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux86080ccc223aabf8d0b85a504f4f06aa88e82fb3 < 749bea542b67513e99240dc58bbfc099e842d508affected
LinuxLinux86080ccc223aabf8d0b85a504f4f06aa88e82fb3 < 5cecfe151874b835331efe086bbdcaeaf64f6b90affected
LinuxLinux86080ccc223aabf8d0b85a504f4f06aa88e82fb3 < 724483b585a1b1e063d42ac5aa835707ff2ec165affected
LinuxLinux86080ccc223aabf8d0b85a504f4f06aa88e82fb3 < d74196bb278b8f8af88e16bd595997dfa3d6fdb0affected
LinuxLinux86080ccc223aabf8d0b85a504f4f06aa88e82fb3 < 0365d6af75f9f2696e94a0fef24a2c8464c037c8affected
LinuxLinux86080ccc223aabf8d0b85a504f4f06aa88e82fb3 < c4ad3ae4c6be9d8b0701761c839771116bca6ea3affected
LinuxLinux86080ccc223aabf8d0b85a504f4f06aa88e82fb3 < 620bf9f981365c18cc2766c53d92bf8131c63f32affected
LinuxLinux4.2affected
LinuxLinux0 < 4.2unaffected
LinuxLinux4.14.298 <= 4.14.*unaffected
LinuxLinux4.19.264 <= 4.19.*unaffected
LinuxLinux5.4.221 <= 5.4.*unaffected
LinuxLinux5.10.152 <= 5.10.*unaffected
LinuxLinux5.15.76 <= 5.15.*unaffected
LinuxLinux6.0.6 <= 6.0.*unaffected
LinuxLinux6.1 <= *unaffected

Weaknesses

References