CVE-2026-80748
mmc: loongson2: Fix sg iteration in data reorder functions
Description
In the Linux kernel, the following vulnerability has been resolved: mmc: loongson2: Fix sg iteration in data reorder functions In ls2k0500_mmc_reorder_cmd_data() and ls2k2000_mmc_reorder_cmd_data(), the for_each_sg() macro already iterates over the scatterlist entries, with 'sg' pointing to the current entry. However, the code incorrectly uses '&sg[i]' and 'sg_dma_len(&sg[i])' inside the loop, which treats 'sg' as an array base and indexes it again, leading to access of wrong sg entries (or out-of-bounds if the list is not an array).
INFO
Published Date :
Sept. 3, 2026, 8:26 a.m.
Last Modified :
Sept. 3, 2026, 8:26 a.m.
Remotely Exploit :
No
Source :
Linux
Solution
- Update the Linux kernel to the patched version.
- Verify scatterlist iteration logic.
- Test data reordering functions.
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