cbcvebase.
CVE-2025-38194
published 2025-07-04

CVE-2025-38194: In the Linux kernel, the following vulnerability has been resolved: jffs2: check that raw node were preallocated before writing summary Syzkaller detected a…

medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
In the Linux kernel, the following vulnerability has been resolved: jffs2: check that raw node were preallocated before writing summary Syzkaller detected a kernel bug in jffs2_link_node_ref, caused by fault injection in jffs2_prealloc_raw_node_refs. jffs2_sum_write_sumnode doesn't check return value of jffs2_prealloc_raw_node_refs and simply lets any error propagate into jffs2_sum_write_data, which eventually calls jffs2_link_node_ref in order to link the summary to an expectedly allocated node. kernel BUG at fs/jffs2/nodelist.c:592! invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 PID: 31277 Comm: syz-executor.7 Not tainted 6.1.128-syzkaller-00139-ge10f83ca10a1 #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:jffs2_link_node_ref+0x570/0x690 fs/jffs2/nodelist.c:592 Call Trace: jffs2_sum_write_data fs/jffs2/summary.c:841 [inline] jffs2_sum_write_sumnode+0xd1a/0x1da0 fs/jffs2/summary.c:874 jffs2_do_reserve_space+0xa18/0xd60 fs/jffs2/nodemgmt.c:388 jffs2_reserve_space+0x55f/0xaa0 fs/jffs2/nodemgmt.c:197 jffs2_write_inode_range+0x246/0xb50 fs/jffs2/write.c:362 jffs2_write_end+0x726/0x15d0 fs/jffs2/file.c:301 generic_perform_write+0x314/0x5d0 mm/filemap.c:3856 __generic_file_write_iter+0x2ae/0x4d0 mm/filemap.c:3973 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4005 call_write_iter include/linux/fs.h:2265 [inline] do_iter_readv_writev+0x20f/0x3c0 fs/read_write.c:735 do_iter_write+0x186/0x710 fs/read_write.c:861 vfs_iter_write+0x70/0xa0 fs/read_write.c:902 iter_file_splice_write+0x73b/0xc90 fs/splice.c:685 do_splice_from fs/splice.c:763 [inline] direct_splice_actor+0x10c/0x170 fs/splice.c:950 splice_direct_to_actor+0x337/0xa10 fs/splice.c:896 do_splice_direct+0x1a9/0x280 fs/splice.c:1002 do_sendfile+0xb13/0x12c0 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1323 [inline] __se_sys_sendfile64 fs/read_write.c:1309 [inline] __x64_sys_sendfile64+0x1cf/0x210 fs/read_write.c:1309 do_syscall_x64 arch/x86/entry/c

Affected

35 ranges· showing 25
VendorProductVersion rangeFixed in
debiandebian_linux
debianlinux< linux 6.1.147-1 (bookworm)linux 6.1.147-1 (bookworm)
debianlinux-6.1< linux 6.1.147-1 (bookworm)linux 6.1.147-1 (bookworm)
linuxlinux
linuxlinux>= 2f785402f39b96a077b6e62bf26164bfb8e0c980 < 337f80f3d546e131c7aa90b61d8cde051ae858c7337f80f3d546e131c7aa90b61d8cde051ae858c7
linuxlinux>= 2f785402f39b96a077b6e62bf26164bfb8e0c980 < 8ce46dc5b10b0b6f67663202a4921b0e11ad73678ce46dc5b10b0b6f67663202a4921b0e11ad7367
linuxlinux>= 2f785402f39b96a077b6e62bf26164bfb8e0c980 < 4adee34098a6ee86a54bf3ec885eab620c126a6b4adee34098a6ee86a54bf3ec885eab620c126a6b
linuxlinux>= 2f785402f39b96a077b6e62bf26164bfb8e0c980 < c0edcdb4fc106d69a2d1a0ce4868193511c389f3c0edcdb4fc106d69a2d1a0ce4868193511c389f3
linuxlinux>= 2f785402f39b96a077b6e62bf26164bfb8e0c980 < 3f46644a5131a4793fc95c32a7d0a769745b06e73f46644a5131a4793fc95c32a7d0a769745b06e7
linuxlinux>= 2f785402f39b96a077b6e62bf26164bfb8e0c980 < da12ef7e19048dc5714032c2db587a215852b200da12ef7e19048dc5714032c2db587a215852b200
linuxlinux>= 2f785402f39b96a077b6e62bf26164bfb8e0c980 < 346cfb9d19ea7feb6fb57917b21c4797fb444dab346cfb9d19ea7feb6fb57917b21c4797fb444dab
linuxlinux>= 2f785402f39b96a077b6e62bf26164bfb8e0c980 < ec9e6f22bce433b260ea226de127ec68042849b0ec9e6f22bce433b260ea226de127ec68042849b0
linuxlinux_kernel>= 0 < 5.10.244-15.10.244-1
linuxlinux_kernel>= 0 < 6.1.147-16.1.147-1
linuxlinux_kernel>= 0 < 6.12.35-16.12.35-1
linuxlinux_kernel>= 0 < 6.12.35-16.12.35-1
linuxlinux_kernel>= 0 < 5.15.0-156.1665.15.0-156.166
linuxlinux_kernel>= 0 < 6.8.0-100.1006.8.0-100.100
linuxlinux_kernel>= 2.6.18 < 5.4.2955.4.295
linuxlinux_kernel>= 5.11 < 5.15.1865.15.186
linuxlinux_kernel>= 5.16 < 6.1.1426.1.142
linuxlinux_kernel>= 5.5 < 5.10.2395.10.239
linuxlinux_kernel>= 6.13 < 6.15.46.15.4
linuxlinux_kernel>= 6.2 < 6.6.956.6.95
linuxlinux_kernel>= 6.7 < 6.12.356.12.35

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.6MEDIUM