gfs2: Truncate address space when flipping GFS2_DIF_JDATA flag

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UBUNTU-CVE-2025-21699

In the Linux kernel, the following vulnerability has been resolved: gfs2: Truncate address space when flipping GFS2DIFJDATA flag Truncate an inode's address space when flipping the GFS2DIFJDATA flag: depending on that flag, the pages in the address space will either use buffer heads or...

CVE-2025-21699

CVE-2025-21699 affects the Linux kernel gfs2 subsystem. The issue arises when truncating an inode’s address space while flipping the GFS2_DIF_JDATA flag, because pages in the address space may use buffer_heads or iomap_folio_state structures and must not be mixed. The result is a condition that c...

CVE-2025-21699 gfs2: Truncate address space when flipping GFS2_DIF_JDATA flag

In the Linux kernel, the following vulnerability has been resolved: gfs2: Truncate address space when flipping GFS2DIFJDATA flag Truncate an inode's address space when flipping the GFS2DIFJDATA flag: depending on that flag, the pages in the address space will either use buffer heads or...