CVE-2026-98729x86/mm: Don't apply va_align to hugetlb mappings on AMD F15h
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: x86/mm: Don't apply va_align to hugetlb mappings on AMD F15h get_align_mask() returns huge_page_mask_align() for hugetlbfs, but get_align_bits() adds va_align.bits regardless, so vm_unmapped_area() returns an address off the huge page boundary and __unmap_hugepage_range() hits BUG_ON(start & ~huge_page_mask(h)) at teardown. This can be triggered on Carrizo and FX-8370E, both hstates. Pass the file to get_align_bits() and skip the randomisation for hugetlbfs. [ bp: Massage commit message. ]
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1317a5e7f7b1336eac4097f0ef4f5cd7ae72f1d0 before fe23680e6f1d52b8cc45d77bf7c54249508a81c7; from 1317a5e7f7b1336eac4097f0ef4f5cd7ae72f1d0 before b46b2e2de47ca9449532b0a7110ed99f79061d6e; from 1317a5e7f7b1336eac4097f0ef4f5cd7ae72f1d0 before d2457a7e2727dc747a61a50d65c2f259afce8c45 | CNA record |
References
- https://git.kernel.org/stable/c/fe23680e6f1d52b8cc45d77bf7c54249508a81c7
- https://git.kernel.org/stable/c/b46b2e2de47ca9449532b0a7110ed99f79061d6e
- https://git.kernel.org/stable/c/d2457a7e2727dc747a61a50d65c2f259afce8c45
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.