Threats Tagged 'ghsa-mwrq-hx54-3h97'
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Threats Tagged 'ghsa-mwrq-hx54-3h97'
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A vulnerability in the Linux kernel's xen/gntalloc component was resolved by validating the grant count before allocation. The function gntalloc_ioctl_alloc() previously allocated memory for the grant-id array before verifying if the requested count was within the global grant limit, potentially leading to improper memory allocation. The fix involves rejecting counts above the limit before allocation and using a subtraction-based check under a mutex to prevent integer wraparound during count addition. Additionally, 64-bit arithmetic is used for page-size multiplication to ensure correctness. Join the discussion | GCVE Database | 10/23/2026, 12:31:37 UTC Added: 10/23/2026, 18:43:37 UTC |
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