CVE-2025-40336drm/gpusvm: fix hmm_pfn_to_map_order() usage
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: drm/gpusvm: fix hmm_pfn_to_map_order() usage Handle the case where the hmm range partially covers a huge page (like 2M), otherwise we can potentially end up doing something nasty like mapping memory which is outside the range, and maybe not even mapped by the mm. Fix is based on the xe userptr code, which in a future patch will directly use gpusvm, so needs alignment here. v2: - Add kernel-doc (Matt B) - s/fls/ilog2/ (Thomas)
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- 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
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 99624bdff8670795b678eafa6509aaad3a5c0175 builds before 08e9fd78ba1b9e95141181c69cc51795c9888157; from 99624bdff8670795b678eafa6509aaad3a5c0175 before c50729c68aaf93611c855752b00e49ce1fdd1558 | CNA record |
References
- https://git.kernel.org/stable/c/08e9fd78ba1b9e95141181c69cc51795c9888157
- https://git.kernel.org/stable/c/c50729c68aaf93611c855752b00e49ce1fdd1558
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.