CVE-2025-38328

jffs2: check jffs2_prealloc_raw_node_refs() result in few other places

State: Published
Severity: Not scored
Published: Jul 10, 2025
Updated: May 11, 2026
Reserved: Apr 16, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

jffs2: check jffs2_prealloc_raw_node_refs() result in few other places

Fuzzing hit another invalid pointer dereference due to the lack of checking whether jffs2_prealloc_raw_node_refs() completed successfully. Subsequent logic implies that the node refs have been allocated.

Handle that. The code is ready for propagating the error upwards.

KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 5835 Comm: syz-executor145 Not tainted 5.10.234-syzkaller #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:jffs2_link_node_ref+0xac/0x690 fs/jffs2/nodelist.c:600 Call Trace: jffs2_mark_erased_block fs/jffs2/erase.c:460 [inline] jffs2_erase_pending_blocks+0x688/0x1860 fs/jffs2/erase.c:118 jffs2_garbage_collect_pass+0x638/0x1a00 fs/jffs2/gc.c:253 jffs2_reserve_space+0x3f4/0xad0 fs/jffs2/nodemgmt.c:167 jffs2_write_inode_range+0x246/0xb50 fs/jffs2/write.c:362 jffs2_write_end+0x712/0x1110 fs/jffs2/file.c:302 generic_perform_write+0x2c2/0x500 mm/filemap.c:3347 __generic_file_write_iter+0x252/0x610 mm/filemap.c:3465 generic_file_write_iter+0xdb/0x230 mm/filemap.c:3497 call_write_iter include/linux/fs.h:2039 [inline] do_iter_readv_writev+0x46d/0x750 fs/read_write.c:740 do_iter_write+0x18c/0x710 fs/read_write.c:866 vfs_writev+0x1db/0x6a0 fs/read_write.c:939 do_pwritev fs/read_write.c:1036 [inline] __do_sys_pwritev fs/read_write.c:1083 [inline] __se_sys_pwritev fs/read_write.c:1078 [inline] __x64_sys_pwritev+0x235/0x310 fs/read_write.c:1078 do_syscall_64+0x30/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	2f785402f39b96a077b6e62bf26164bfb8e0c980 to before 7e860296d7808de1db175c1eda29f94a2955dcc4Affected 2f785402f39b96a077b6e62bf26164bfb8e0c980 to before d96e6451a8d0fe62492d4cc942d695772293c05aAffected 2f785402f39b96a077b6e62bf26164bfb8e0c980 to before f41c625328777f9ad572901ba0b0065bb9c9c1daAffected 2f785402f39b96a077b6e62bf26164bfb8e0c980 to before 38d767fb4a7766ec2058f97787e4c6e8d10343d6Affected 2f785402f39b96a077b6e62bf26164bfb8e0c980 to before cd42ddddd70abc7127c12b96c8c85dbd080ea56fAffected 2f785402f39b96a077b6e62bf26164bfb8e0c980 to before d1b81776f337a9b997f797c70ac0a26d838a2168Affected 2f785402f39b96a077b6e62bf26164bfb8e0c980 to before 042fa922c84b5080401bcd8897d4ac4919d15075Affected 2f785402f39b96a077b6e62bf26164bfb8e0c980 to before 2b6d96503255a3ed676cd70f8368870c6d6a25c6Affected
LinuxLinux	2.6.18Affected before 2.6.18Not affected 5.4.295 through 5.4.Not affected 5.10.239 through 5.10.Not affected 5.15.186 through 5.15.Not affected 6.1.142 through 6.1.Not affected 6.6.95 through 6.6.Not affected 6.12.35 through 6.12.Not affected 6.15.4 through 6.15.*Not affected 6.16 and laterNot affected

Product

Versions

LinuxLinux

2f785402f39b96a077b6e62bf26164bfb8e0c980 to before 7e860296d7808de1db175c1eda29f94a2955dcc4Affected
2f785402f39b96a077b6e62bf26164bfb8e0c980 to before d96e6451a8d0fe62492d4cc942d695772293c05aAffected
2f785402f39b96a077b6e62bf26164bfb8e0c980 to before f41c625328777f9ad572901ba0b0065bb9c9c1daAffected
2f785402f39b96a077b6e62bf26164bfb8e0c980 to before 38d767fb4a7766ec2058f97787e4c6e8d10343d6Affected
2f785402f39b96a077b6e62bf26164bfb8e0c980 to before cd42ddddd70abc7127c12b96c8c85dbd080ea56fAffected
2f785402f39b96a077b6e62bf26164bfb8e0c980 to before d1b81776f337a9b997f797c70ac0a26d838a2168Affected
2f785402f39b96a077b6e62bf26164bfb8e0c980 to before 042fa922c84b5080401bcd8897d4ac4919d15075Affected
2f785402f39b96a077b6e62bf26164bfb8e0c980 to before 2b6d96503255a3ed676cd70f8368870c6d6a25c6Affected

LinuxLinux

2.6.18Affected
before 2.6.18Not affected
5.4.295 through 5.4.*Not affected
5.10.239 through 5.10.*Not affected
5.15.186 through 5.15.*Not affected
6.1.142 through 6.1.*Not affected
6.6.95 through 6.6.*Not affected
6.12.35 through 6.12.*Not affected
6.15.4 through 6.15.*Not affected
6.16 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.