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CVE-2022-50273
published 2025-09-15

CVE-2022-50273: In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on destination blkaddr during recovery As Wenqing Liu reported…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.14%
4.3th percentile
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on destination blkaddr during recovery As Wenqing Liu reported in bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216456 loop5: detected capacity change from 0 to 131072 F2FS-fs (loop5): recover_inode: ino = 6, name = hln, inline = 1 F2FS-fs (loop5): recover_data: ino = 6 (i_size: recover) err = 0 F2FS-fs (loop5): recover_inode: ino = 6, name = hln, inline = 1 F2FS-fs (loop5): recover_data: ino = 6 (i_size: recover) err = 0 F2FS-fs (loop5): recover_inode: ino = 6, name = hln, inline = 1 F2FS-fs (loop5): recover_data: ino = 6 (i_size: recover) err = 0 F2FS-fs (loop5): Bitmap was wrongly set, blk:5634 ------------[ cut here ]------------ WARNING: CPU: 3 PID: 1013 at fs/f2fs/segment.c:2198 RIP: 0010:update_sit_entry+0xa55/0x10b0 [f2fs] Call Trace: f2fs_do_replace_block+0xa98/0x1890 [f2fs] f2fs_replace_block+0xeb/0x180 [f2fs] recover_data+0x1a69/0x6ae0 [f2fs] f2fs_recover_fsync_data+0x120d/0x1fc0 [f2fs] f2fs_fill_super+0x4665/0x61e0 [f2fs] mount_bdev+0x2cf/0x3b0 legacy_get_tree+0xed/0x1d0 vfs_get_tree+0x81/0x2b0 path_mount+0x47e/0x19d0 do_mount+0xce/0xf0 __x64_sys_mount+0x12c/0x1a0 do_syscall_64+0x38/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd If we enable CONFIG_F2FS_CHECK_FS config, it will trigger a kernel panic instead of warning. The root cause is: in fuzzed image, SIT table is inconsistent with inode mapping table, result in triggering such warning during SIT table update. This patch introduces a new flag DATA_GENERIC_ENHANCE_UPDATE, w/ this flag, data block recovery flow can check destination blkaddr's validation in SIT table, and skip f2fs_replace_block() to avoid inconsistent status.

Affected

17 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.0.3-1 (bookworm)linux 6.0.3-1 (bookworm)
linuxlinux——
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 68b1e607559d3dc85f94b0d738d7c4e8029b0cfa68b1e607559d3dc85f94b0d738d7c4e8029b0cfa
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 73fb4bd2c055a393816f078f158cdd3025006f1d73fb4bd2c055a393816f078f158cdd3025006f1d
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < ed854f10e6afd5cbd5c3274d4c4df4bfe0ab4362ed854f10e6afd5cbd5c3274d4c4df4bfe0ab4362
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 8f0a47def4722c5fd8d6b9268b5ffed8a249e2db8f0a47def4722c5fd8d6b9268b5ffed8a249e2db
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 3a4d24d746866dd45d970bd565ff3886e839366a3a4d24d746866dd45d970bd565ff3886e839366a
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 0ef4ca04a3f9223ff8bc440041c524b2123e09a30ef4ca04a3f9223ff8bc440041c524b2123e09a3
linuxlinux_kernel>= 0 < 5.10.158-15.10.158-1
linuxlinux_kernel>= 0 < 6.0.3-16.0.3-1
linuxlinux_kernel>= 0 < 6.0.3-16.0.3-1
linuxlinux_kernel>= 0 < 6.0.3-16.0.3-1
linuxlinux_kernel>= 3.8 < 5.4.2205.4.220
linuxlinux_kernel>= 5.11 < 5.15.755.15.75
linuxlinux_kernel>= 5.16 < 5.19.175.19.17
linuxlinux_kernel>= 5.5 < 5.10.1505.10.150
linuxlinux_kernel>= 6.0 < 6.0.36.0.3

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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