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In the Linux kernel, the following vulnerability has been resolved:
dma-buf/dma-resv: Stop leaking on krealloc() failure
Currently dma_resv_get_fences() will leak the previously allocated array if the fence iteration got restarted and the krealloc_array() fails.
Free the old array by hand, and make sure we still clear the returned *fences so the caller won't end up accessing freed memory. Some (but not all) of the callers of dma_resv_get_fences() seem to still trawl through the array even when dma_resv_get_fences() failed. And let's zero out *num_fences as well for good measure.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel-libbpf-staticUpgrade perf-debuginfoUpgrade kernel-headersUpgrade kernel-libbpf-develUpgrade kernelUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade kernel-develUpgrade kernel-livepatch-6.1.49-69.116Upgrade bpftoolUpgrade kernel-tools-develUpgrade perfUpgrade kernel-tools-debuginfoUpgrade kernel-libbpfUpgrade python3-perf-debuginfoUpgrade python3-perfUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-aarch64 | Sep 30, 2025 | Sep 15, 2025 |
| Debian | — | Upgrade linux | Sep 17, 2025 | Sep 17, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Sep 15, 2025 |
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