What happened
In the Linux kernel, the following vulnerability has been resolved: accel/habanalabs: postpone mem_mgr IDR destruction to hpriv_release() The memory manager IDR is currently destroyed when user releases the file descriptor. However, at this point the user context might be still held, and memory buffers might be still in use. Later on, calls to release those buffers will fail due to not finding their handles in the IDR, leading to a memory leak. To avoid this leak, split the IDR destruction from the memory manager fini, and postpone it to hpriv_release() when there is no user context and no buffers are used.
Affected versions
Linux: 0feaf86d4e69507ab9b2af7dcc63a6886352d5db through before c96cc6b46fdce89a8feb270a35bbe5086c142534 (git); 0feaf86d4e69507ab9b2af7dcc63a6886352d5db through before 840de329ca99cafd0cdde9c6ac160b1330942aba (git); 0feaf86d4e69507ab9b2af7dcc63a6886352d5db through before 2e8e9a895c4589f124a37fc84d123b5114406e94 (git); 5.1 Fixed: See vendor advisory.
Why it matters
Review the vendor advisory and exposure of the affected product to determine operational impact.
Detection & mitigation
- Apply vendor-provided updates or mitigations.
- Review affected product exposure and access logs.
Public PoC references
No public PoC reference has passed the current publication threshold.