{"id":"DEBIAN-CVE-2022-49352","details":"In the Linux kernel, the following vulnerability has been resolved:  ext4: fix warning in ext4_handle_inode_extension  We got issue as follows: EXT4-fs error (device loop0) in ext4_reserve_inode_write:5741: Out of memory EXT4-fs error (device loop0): ext4_setattr:5462: inode #13: comm syz-executor.0: mark_inode_dirty error EXT4-fs error (device loop0) in ext4_setattr:5519: Out of memory EXT4-fs error (device loop0): ext4_ind_map_blocks:595: inode #13: comm syz-executor.0: Can't allocate blocks for non-extent mapped inodes with bigalloc ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4361 at fs/ext4/file.c:301 ext4_file_write_iter+0x11c9/0x1220 Modules linked in: CPU: 1 PID: 4361 Comm: syz-executor.0 Not tainted 5.10.0+ #1 RIP: 0010:ext4_file_write_iter+0x11c9/0x1220 RSP: 0018:ffff924d80b27c00 EFLAGS: 00010282 RAX: ffffffff815a3379 RBX: 0000000000000000 RCX: 000000003b000000 RDX: ffff924d81601000 RSI: 00000000000009cc RDI: 00000000000009cd RBP: 000000000000000d R08: ffffffffbc5a2c6b R09: 0000902e0e52a96f R10: ffff902e2b7c1b40 R11: ffff902e2b7c1b40 R12: 000000000000000a R13: 0000000000000001 R14: ffff902e0e52aa10 R15: ffffffffffffff8b FS:  00007f81a7f65700(0000) GS:ffff902e3bc80000(0000) knlGS:0000000000000000 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 000000012db88001 CR4: 00000000003706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace:  do_iter_readv_writev+0x2e5/0x360  do_iter_write+0x112/0x4c0  do_pwritev+0x1e5/0x390  __x64_sys_pwritev2+0x7e/0xa0  do_syscall_64+0x37/0x50  entry_SYSCALL_64_after_hwframe+0x44/0xa9  Above issue may happen as follows: Assume inode.i_size=4096 EXT4_I(inode)-\u003ei_disksize=4096  step 1: set inode-\u003ei_isize = 8192 ext4_setattr   if (attr-\u003eia_size != inode-\u003ei_size)     EXT4_I(inode)-\u003ei_disksize = attr-\u003eia_size;     rc = ext4_mark_inode_dirty        ext4_reserve_inode_write           ext4_get_inode_loc             __ext4_get_inode_loc               sb_getblk --\u003e return -ENOMEM    ...    if (!error)  -\u003ewill not update i_size      i_size_write(inode, attr-\u003eia_size); Now: inode.i_size=4096 EXT4_I(inode)-\u003ei_disksize=8192  step 2: Direct write 4096 bytes ext4_file_write_iter  ext4_dio_write_iter    iomap_dio_rw -\u003ereturn error  if (extend)    ext4_handle_inode_extension      WARN_ON_ONCE(i_size_read(inode) \u003c EXT4_I(inode)-\u003ei_disksize); -\u003eThen trigger warning.  To solve above issue, if mark inode dirty failed in ext4_setattr just set 'EXT4_I(inode)-\u003ei_disksize' with old value.","modified":"2026-09-01T16:05:20.749582447Z","published":"2025-02-26T07:01:11.920Z","upstream":["CVE-2022-49352"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-49352"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49352.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49352.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49352.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}