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CVE-2025-39836

In the Linux kernel, the following vulnerability has been resolved:

efi: stmm: Fix incorrect buffer allocation method

The communication buffer allocated by setup_mm_hdr() is later on passed
to tee_shm_register_kernel_buf(). The latter expects those buffers to be
contiguous pages, but setup_mm_hdr() just uses kmalloc(). That can cause
various corruptions or BUGs, specifically since commit 9aec2fb0fd5e
("slab: allocate frozen pages"), though it was broken before as well.

Fix this by using alloc_pages_exact() instead of kmalloc().

Verknüpft mit AI von unstrukturierten Daten zu bestehenden CPE der NVD
Diese Information steht angemeldeten Benutzern zur Verfügung.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version < 77ff27ff0e4529a003c8a1c2492c111968c378d3
Version c44b6be62e8dd4ee0a308c36a70620613e6fc55f
Status affected
Version < 630c0e6064daf84f17aad1a7d9ca76b562e3fe47
Version c44b6be62e8dd4ee0a308c36a70620613e6fc55f
Status affected
Version < c5e81e672699e0c5557b2b755cc8f7a69aa92bff
Version c44b6be62e8dd4ee0a308c36a70620613e6fc55f
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.8
Status affected
Version < 6.8
Version 0
Status unaffected
Version <= 6.12.*
Version 6.12.45
Status unaffected
Version <= 6.16.*
Version 6.16.5
Status unaffected
Version <= *
Version 6.17-rc4
Status unaffected
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.02% 0.043
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String