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CVE-2025-39910— mm/vmalloc, mm/kasan: respect gfp mask in kasan_populate_vmalloc()

EPSS 0.01% · P3

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinux451769ebb7e792c3404db53b3c2a422990de654e< 33b95d90427cb4babf32059e323a6d0c027610feaffected
451769ebb7e792c3404db53b3c2a422990de654e< 79357cd06d41d0f5a11b17d7c86176e395d10ef2affected
5.17affected
< 5.17unaffected
6.16.8≤ 6.16.*unaffected
6.17≤ *unaffected
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I. Basic Information for CVE-2025-39910

Vulnerability Information
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Vulnerability Title
mm/vmalloc, mm/kasan: respect gfp mask in kasan_populate_vmalloc()
Source: NVD (National Vulnerability Database)
Vulnerability Description
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/686ea951.050a0220.385921.0016.GAE@google.com This patch: - Extends kasan_populate_vmalloc() and helpers to take gfp_mask; - Passes gfp_mask down to alloc_pages_bulk() and __get_free_page(); - Enforces GFP_NOFS/NOIO semantics with memalloc_*_save()/restore() around apply_to_page_range(); - Updates vmalloc.c and percpu allocator call sites accordingly.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于kasan_populate_vmalloc函数未正确使用gfp掩码，可能导致死锁。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 451769ebb7e792c3404db53b3c2a422990de654e ~ 33b95d90427cb4babf32059e323a6d0c027610fe -
LinuxLinux 5.17 -

II. Public POCs for CVE-2025-39910

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III. Intelligence Information for CVE-2025-39910

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Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total

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Showing top 20 of 169 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39910

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