CVE-2023-53829: In the Linux kernel, the following vulnerability has been resolved: f2fs: flush inode if atomic file is aborted Let's flush the inode being aborted atomic…

PriorityP341high7.8CVSS 3.1

AVLACLPRLUINSUCHIHAH

EPSS

0.19%

8.8th percentile

In the Linux kernel, the following vulnerability has been resolved: f2fs: flush inode if atomic file is aborted Let's flush the inode being aborted atomic operation to avoid stale dirty inode during eviction in this call stack: f2fs_mark_inode_dirty_sync+0x22/0x40 [f2fs] f2fs_abort_atomic_write+0xc4/0xf0 [f2fs] f2fs_evict_inode+0x3f/0x690 [f2fs] ? sugov_start+0x140/0x140 evict+0xc3/0x1c0 evict_inodes+0x17b/0x210 generic_shutdown_super+0x32/0x120 kill_block_super+0x21/0x50 deactivate_locked_super+0x31/0x90 cleanup_mnt+0x100/0x160 task_work_run+0x59/0x90 do_exit+0x33b/0xa50 do_group_exit+0x2d/0x80 __x64_sys_exit_group+0x14/0x20 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd This triggers f2fs_bug_on() in f2fs_evict_inode: f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)); This fixes the syzbot report: loop0: detected capacity change from 0 to 131072 F2FS-fs (loop0): invalid crc value F2FS-fs (loop0): Found nat_bits in checkpoint F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4 ------------[ cut here ]------------ kernel BUG at fs/f2fs/inode.c:869! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5014 Comm: syz-executor220 Not tainted 6.4.0-syzkaller-11479-g6cd06ab12d1a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:f2fs_evict_inode+0x172d/0x1e00 fs/f2fs/inode.c:869 Code: ff df 48 c1 ea 03 80 3c 02 00 0f 85 6a 06 00 00 8b 75 40 ba 01 00 00 00 4c 89 e7 e8 6d ce 06 00 e9 aa fc ff ff e8 63 22 e2 fd 0b e8 5c 22 e2 fd 48 c7 c0 a8 3a 18 8d 48 ba 00 00 00 00 00 fc RSP: 0018:ffffc90003a6fa00 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff8880273b8000 RSI: ffffffff83a2bd0d RDI: 0000000000000007 RBP: ffff888077db91b0 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888029a3c000 R13: ffff888077db9660 R14: ffff888029a3c0b8 R15: ffff888077db9c50 FS: 0000000000000000(0000) GS:ffff8880b9

Affected

10 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.1.55-1 (bookworm)	linux 6.1.55-1 (bookworm)
linux	linux	—	—
linux	linux	>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 1c64dbe8fa3552a340bca6d7fa09468c16ed2a85	1c64dbe8fa3552a340bca6d7fa09468c16ed2a85
linux	linux	>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < bfa7853bb47fee0c17030b377c98cf4ede47ba33	bfa7853bb47fee0c17030b377c98cf4ede47ba33
linux	linux	>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < a3ab55746612247ce3dcaac6de66f5ffc055b9df	a3ab55746612247ce3dcaac6de66f5ffc055b9df
linux	linux_kernel	>= 0 < 6.1.55-1	6.1.55-1
linux	linux_kernel	>= 0 < 6.5.6-1	6.5.6-1
linux	linux_kernel	>= 0 < 6.5.6-1	6.5.6-1
linux	linux_kernel	>= 3.8.0 < 6.1.54	6.1.54
linux	linux_kernel	>= 6.2.0 < 6.5.4	6.5.4

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

vendor_redhat5.5MEDIUM

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