CVE-2025-39910Medium· 5.5▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: mm/vmalloc, mm/kasan: respect gfp mask in kasan_populate_vmalloc() kasan_populate_vmalloc() and its helpers ignore the caller's gfp_mask and always allocate memory usi…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the CISA ADP record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 21.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.1%
0.1% → 0.1%
Last analysed / modified upstream
In the Linux kernel, the following vulnerability has been resolved:
mm/vmalloc, mm/kasan: respect gfp mask in kasan_populate_vmalloc()
kasan_populate_vmalloc() and its helpers ignore the caller's gfp_mask and always allocate memory using the hardcoded GFP_KERNEL flag. This makes them inconsistent with vmalloc(), which was recently extended to support GFP_NOFS and GFP_NOIO allocations.
Page table allocations performed during shadow population also ignore the external gfp_mask. To preserve the intended semantics of GFP_NOFS and GFP_NOIO, wrap the apply_to_page_range() calls into the appropriate memalloc scope.
xfs calls vmalloc with GFP_NOFS, so this bug could lead to deadlock.
There was a report here https://lkml.kernel.org/r/[email protected]
This patch:
Linux >= 451769ebb7e792c3404db53b3c2a422990de654e < c136f2e4f2edd58a62a3425d4dd373d82834d1f9Linux >= 451769ebb7e792c3404db53b3c2a422990de654e < 9598c83a50a5f9d57fd0c12fc08d9425c1ce9537Linux >= 451769ebb7e792c3404db53b3c2a422990de654e < aa1b4b7a1b92743297f9da741424df4703a8e11bLinux >= 451769ebb7e792c3404db53b3c2a422990de654e < 33b95d90427cb4babf32059e323a6d0c027610feLinux >= 451769ebb7e792c3404db53b3c2a422990de654e < 79357cd06d41d0f5a11b17d7c86176e395d10ef2Linux 5.17Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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