CVE-2026-63818 f2fs: validate orphan inode entry count

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate orphan inode entry count f2fsrecoverorphaninodes trusts the orphan block entrycount when replaying orphan inodes from the checkpoint pack. A corrupted entrycount larger than F2FSORPHANSPERBLOCK makes the recovery...

CVE-2026-63818

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate orphan inode entry count f2fsrecoverorphaninodes trusts the orphan block entrycount when replaying orphan inodes from the checkpoint pack. A corrupted entrycount larger than F2FSORPHANSPERBLOCK makes the recovery...

CVE-2026-63818

CVE-2026-63818 affects the Linux kernel’s f2fs filesystem. The issue arises when f2fs_recover_orphan_inodes() trusts the orphan block entry_count from the checkpoint pack; a corrupted entry_count larger than F2FS_ORPHANS_PER_BLOCK can cause the recovery loop to read past the inode array, leading ...

CVE-2026-63818 f2fs: validate orphan inode entry count

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate orphan inode entry count f2fsrecoverorphaninodes trusts the orphan block entrycount when replaying orphan inodes from the checkpoint pack. A corrupted entrycount larger than F2FSORPHANSPERBLOCK makes the recovery...

EUVD-2026-45484

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate orphan inode entry count f2fsrecoverorphaninodes trusts the orphan block entrycount when replaying orphan inodes from the checkpoint pack. A corrupted entrycount larger than F2FSORPHANSPERBLOCK makes the recovery...

CVE-2026-63818

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate orphan inode entry count f2fsrecoverorphaninodes trusts the orphan block entrycount when replaying orphan inodes from the checkpoint pack. A corrupted entrycount larger than F2FSORPHANSPERBLOCK makes the recovery...

EUVD-2026-45480

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate ACL entry sizes in f2fsaclfromdisk f2fsaclcount only validates the aggregate ACL xattr length. A malformed ACL can still place ACLUSER or ACLGROUP in a slot that only contains struct f2fsaclentryshort bytes, and...

CVE-2026-63814 f2fs: validate ACL entry sizes in f2fs_acl_from_disk()

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate ACL entry sizes in f2fsaclfromdisk f2fsaclcount only validates the aggregate ACL xattr length. A malformed ACL can still place ACLUSER or ACLGROUP in a slot that only contains struct f2fsaclentryshort bytes, and...

CVE-2026-63814

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate ACL entry sizes in f2fsaclfromdisk f2fsaclcount only validates the aggregate ACL xattr length. A malformed ACL can still place ACLUSER or ACLGROUP in a slot that only contains struct f2fsaclentryshort bytes, and...

CVE-2026-63814

CVE-2026-63814 (Linux kernel, f2fs) is resolved. A malformed ACL in f2fs_acl_from_disk() could bypass proper length checks because f2fs_acl_count() only validates the aggregate ACL xattr length, allowing ACL_USER/ACL_GROUP entries to be read before a full entry fits. The fix adds checks: require ...

CVE-2026-63808 exfat: fix potential use-after-free in exfat_find_dir_entry()

In the Linux kernel, the following vulnerability has been resolved: exfat: fix potential use-after-free in exfatfinddirentry In exfatfinddirentry, the bufferhead obtained from exfatgetdentry is released with brelsebh before the fall-through TYPEEXTEND branch reads the directory entry through ep...

CVE-2026-63808 exfat: fix potential use-after-free in exfat_find_dir_entry()

In the Linux kernel, the following vulnerability has been resolved: exfat: fix potential use-after-free in exfatfinddirentry In exfatfinddirentry, the bufferhead obtained from exfatgetdentry is released with brelsebh before the fall-through TYPEEXTEND branch reads the directory entry through ep...

CVE-2026-63808

CVE-2026-63808 (Linux kernel exFAT): The vulnerability is a potential use-after-free in exfat_find_dir_entry() where a buffer_head is freed before all reads on the TYPE_EXTEND path, leading to a read from invalid memory. The root cause is brelse(bh) occurring before ep is no longer dereferenced; ...

CVE-2026-63808

In the Linux kernel, the following vulnerability has been resolved: exfat: fix potential use-after-free in exfatfinddirentry In exfatfinddirentry, the bufferhead obtained from exfatgetdentry is released with brelsebh before the fall-through TYPEEXTEND branch reads the directory entry through ep...

CVE-2026-63808

In the Linux kernel, the following vulnerability has been resolved: exfat: fix potential use-after-free in exfatfinddirentry In exfatfinddirentry, the bufferhead obtained from exfatgetdentry is released with brelsebh before the fall-through TYPEEXTEND branch reads the directory entry through ep...

EUVD-2026-45512

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bounds read in smbcheckpermdacl The permission-check ACE walk in smbcheckpermdacl validates the ACE header size and caps sid.numsubauth at SIDMAXSUBAUTHORITIES, but it never checks that ace-size is actually larg...

CVE-2026-53390

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bounds read in smbcheckpermdacl The permission-check ACE walk in smbcheckpermdacl validates the ACE header size and caps sid.numsubauth at SIDMAXSUBAUTHORITIES, but it never checks that ace-size is actually larg...

CVE-2026-53390 ksmbd: fix out-of-bounds read in smb_check_perm_dacl()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bounds read in smbcheckpermdacl The permission-check ACE walk in smbcheckpermdacl validates the ACE header size and caps sid.numsubauth at SIDMAXSUBAUTHORITIES, but it never checks that ace-size is actually larg...

CVE-2026-53368 f2fs: fix fsck inconsistency caused by incorrect nat_entry flag usage

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix fsck inconsistency caused by incorrect natentry flag usage f2fsneeddentrymark reads natentry flags without mutual exclusion with the checkpoint path, which can result in an incorrect inode block marking state. The...

CVE-2026-53368

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix fsck inconsistency caused by incorrect natentry flag usage f2fsneeddentrymark reads natentry flags without mutual exclusion with the checkpoint path, which can result in an incorrect inode block marking state. The...