CVE-2026-80809 ocfs2: fix missing metadata reservation for large xattrs

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix missing metadata reservation for large xattrs BUG lsetxattr panics the kernel when setting a large xattr value on a fragmented filesystem where the file already has an external xattr block. CAUSE ocfs2calcxattrsetneed...

CVE-2026-80809

CVE-2026-80809 affects the Linux kernel's ocfs2 filesystem . The root cause is that ocfs2_calc_xattr_set_need() fails to reserve metadata blocks for a new xattr value's extent tree when the file already has an external xattr block, leaving meta_ac as NULL. On a fragmented filesystem , this causes...

CVE-2024-42077 ocfs2: fix DIO failure due to insufficient transaction credits

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix DIO failure due to insufficient transaction credits The code in ocfs2dioendiowrite estimates number of necessary transaction credits using ocfs2calcextendcredits. This however does not take into account that the IO cou...