CVE-2025-38195

Summary

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

LoongArch: Fix panic caused by NULL-PMD in huge_pte_offset()

ERROR INFO:

CPU 25 Unable to handle kernel paging request at virtual address 0x0 … Call Trace: [<900000000023c30c>] huge_pte_offset+0x3c/0x58 [<900000000057fd4c>] hugetlb_follow_page_mask+0x74/0x438 [<900000000051fee8>] __get_user_pages+0xe0/0x4c8 [<9000000000522414>] faultin_page_range+0x84/0x380 [<9000000000564e8c>] madvise_vma_behavior+0x534/0xa48 [<900000000056689c>] do_madvise+0x1bc/0x3e8 [<9000000000566df4>] sys_madvise+0x24/0x38 [<90000000015b9e88>] do_syscall+0x78/0x98 [<9000000000221f18>] handle_syscall+0xb8/0x158

In some cases, pmd may be NULL and rely on NULL as the return value for processing, so it is necessary to determine this situation here.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2ca9380b12711afe95b3589bd82b59623b3c96b3 < b427d98d55217b53c88643579fbbd8a4c351a105affected
LinuxLinux51424fd171cee6a33f01f7c66b8eb23ac42289d4 < 985f086f281b7bbb6644851e63af1a17ffff9277affected
LinuxLinuxbd51834d1cf65a2c801295d230c220aeebf87a73 < b5c7397b7fd125203c60b59860c168ee92291272affected
LinuxLinuxbd51834d1cf65a2c801295d230c220aeebf87a73 < ee084fa96123ede8b0563a1b5a9b23adc43cd50daffected
LinuxLinux34256805720993e37adf6127371a1265aea8376aaffected
LinuxLinuxb49f085cd671addbda4802d6b9382513f7dd0f30affected
LinuxLinux6.6.89 < 6.6.95affected
LinuxLinux6.12.26 < 6.12.35affected
LinuxLinux6.1.136 < 6.2affected
LinuxLinux6.14.5 < 6.15affected
LinuxLinux6.15affected
LinuxLinux0 < 6.15unaffected
LinuxLinux6.6.95 <= 6.6.*unaffected
LinuxLinux6.12.35 <= 6.12.*unaffected
LinuxLinux6.15.4 <= 6.15.*unaffected
LinuxLinux6.16 <= *unaffected

Weaknesses

References