What happened
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix dma mapping leak on data setup error We're leaking the initial DMA mapping during iteration if we fail to allocate the tracking descriptor for both PRP and SGL. Unmap the iterator directly; we can't use the existing unmap helper because it depends on the tracking descriptor being successfully allocated, so a new one for an in-use iterator is provided. The mappings were also leaking when the driver detects an invalid bio_vec when mapping PRPs, so fix that too.
Affected versions
Linux: 7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2 through before e50db059ec8e63bc50b1cc039e2502cb5ea75a70 (git); 7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2 through before 1bf86336e4b6cf40873fda47a7fe191446864937 (git); 6.17 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.