UBUNTU-CVE-2024-44942
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on F2FS_INLINE_DATA flag in inode during GC syzbot reports a f2fs bug as below: ------------[ cut here ]------------ kernel BUG at fs/f2fs/inline.c:258! CPU: 1 PID: 34 Comm: kworker/u8:2 Not tainted 6.9.0-rc6-syzkaller-00012-g9e4bc4bcae01 #0 RIP: 0010:f2fs_write_inline_data+0x781/0x790 fs/f2fs/inline.c:258 Call Trace: f2fs_write_single_data_page+0xb65/0x1d60 fs/f2fs/data.c:2834 f2fs_write_cache_pages fs/f2fs/data.c:3133 [inline] __f2fs_write_data_pages fs/f2fs/data.c:3288 [inline] f2fs_write_data_pages+0x1efe/0x3a90 fs/f2fs/data.c:3315 do_writepages+0x35b/0x870 mm/page-writeback.c:2612 __writeback_single_inode+0x165/0x10b0 fs/fs-writeback.c:1650 writeback_sb_inodes+0x905/0x1260 fs/fs-writeback.c:1941 wb_writeback+0x457/0xce0 fs/fs-writeback.c:2117 wb_do_writeback fs/fs-writeback.c:2264 [inline] wb_workfn+0x410/0x1090 fs/fs-writeback.c:2304 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa12/0x17c0 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 The root cause is: inline_data inode can be fuzzed, so that there may be valid blkaddr in its direct node, once f2fs triggers background GC to migrate the block, it will hit f2fs_bug_on() during dirty page writeback. Let's add sanity check on F2FS_INLINE_DATA flag in inode during GC, so that, it can forbid migrating inline_data inode's data block for fixing.
02 / AFFECTED SOFTWARE
Affected packages
14 explicit affected versions
4 explicit affected versions
12 explicit affected versions
101 explicit affected versions
13 explicit affected versions
7 explicit affected versions
10 explicit affected versions
33 explicit affected versions
1 explicit affected versions
9 explicit affected versions
1 explicit affected versions
12 explicit affected versions
17 explicit affected versions
8 explicit affected versions
7 explicit affected versions
88 explicit affected versions
8 explicit affected versions
7 explicit affected versions
11 explicit affected versions
39 explicit affected versions
53 explicit affected versions
6 explicit affected versions
50 explicit affected versions
12 explicit affected versions
19 explicit affected versions
6 explicit affected versions
63 explicit affected versions
10 explicit affected versions
48 explicit affected versions
69 explicit affected versions
58 explicit affected versions
49 explicit affected versions
8 explicit affected versions
14 explicit affected versions
55 explicit affected versions
7 explicit affected versions
11 explicit affected versions
54 explicit affected versions
9 explicit affected versions
96 explicit affected versions
13 explicit affected versions
66 explicit affected versions
35 explicit affected versions
15 explicit affected versions
18 explicit affected versions
18 explicit affected versions
16 explicit affected versions
97 explicit affected versions
64 explicit affected versions
14 explicit affected versions
98 explicit affected versions
13 explicit affected versions
23 explicit affected versions
102 explicit affected versions
18 explicit affected versions
1 explicit affected versions
21 explicit affected versions
16 explicit affected versions
10 explicit affected versions
53 explicit affected versions
16 explicit affected versions
7 explicit affected versions
12 explicit affected versions
46 explicit affected versions
14 explicit affected versions
7 explicit affected versions
86 explicit affected versions
12 explicit affected versions
14 explicit affected versions
101 explicit affected versions
109 explicit affected versions
12 explicit affected versions
9 explicit affected versions
97 explicit affected versions
9 explicit affected versions
1 explicit affected versions
10 explicit affected versions
168 explicit affected versions
37 explicit affected versions
1 explicit affected versions
36 explicit affected versions
26 explicit affected versions
13 explicit affected versions
10 explicit affected versions
75 explicit affected versions
29 explicit affected versions
89 explicit affected versions
13 explicit affected versions
60 explicit affected versions
8 explicit affected versions
84 explicit affected versions
57 explicit affected versions
101 explicit affected versions
19 explicit affected versions
95 explicit affected versions
33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
1 explicit affected versions
10 explicit affected versions
11 explicit affected versions
12 explicit affected versions
118 explicit affected versions
7 explicit affected versions
99 explicit affected versions
2 explicit affected versions
46 explicit affected versions
40 explicit affected versions
59 explicit affected versions
111 explicit affected versions
56 explicit affected versions
131 explicit affected versions
10 explicit affected versions
26 explicit affected versions
16 explicit affected versions
35 explicit affected versions
1 explicit affected versions
7 explicit affected versions
17 explicit affected versions
13 explicit affected versions
16 explicit affected versions
118 explicit affected versions
59 explicit affected versions
16 explicit affected versions
47 explicit affected versions
3 explicit affected versions
72 explicit affected versions
1 explicit affected versions
2 explicit affected versions
66 explicit affected versions
51 explicit affected versions
71 explicit affected versions
14 explicit affected versions
12 explicit affected versions
45 explicit affected versions
27 explicit affected versions
31 explicit affected versions
1 explicit affected versions
1 explicit affected versions
20 explicit affected versions
5 explicit affected versions
8 explicit affected versions
1 explicit affected versions
10 explicit affected versions
13 explicit affected versions
13 explicit affected versions
88 explicit affected versions
13 explicit affected versions
53 explicit affected versions
73 explicit affected versions
50 explicit affected versions
10 explicit affected versions
14 explicit affected versions
12 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
45 explicit affected versions
37 explicit affected versions
17 explicit affected versions
14 explicit affected versions
145 explicit affected versions
38 explicit affected versions
49 explicit affected versions
9 explicit affected versions
48 explicit affected versions
11 explicit affected versions
56 explicit affected versions
7 explicit affected versions
29 explicit affected versions
78 explicit affected versions
60 explicit affected versions
122 explicit affected versions
101 explicit affected versions
4 explicit affected versions
1 explicit affected versions
1 explicit affected versions
54 explicit affected versions
94 explicit affected versions
13 explicit affected versions
43 explicit affected versions
54 explicit affected versions
125 explicit affected versions
145 explicit affected versions
10 explicit affected versions
8 explicit affected versions
12 explicit affected versions
14 explicit affected versions
89 explicit affected versions
4 explicit affected versions
78 explicit affected versions
11 explicit affected versions
1 explicit affected versions
48 explicit affected versions
10 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on F2FS_INLINE_DATA flag in inode during GC syzbot reports a f2fs bug as below: ------------[ cut here ]------------ kernel BUG at fs/f2fs/inline.c:258! CPU: 1 PID: 34 Comm: kworker/u8:2 Not tainted 6.9.0-rc6-syzkaller-00012-g9e4bc4bcae01 #0 RIP: 0010:f2fs_write_inline_data+0x781/0x790 fs/f2fs/inline.c:258 Call Trace: f2fs_write_single_data_page+0xb65/0x1d60 fs/f2fs/data.c:2834 f2fs_write_cache_pages fs/f2fs/data.c:3133 [inline] __f2fs_write_data_pages fs/f2fs/data.c:3288 [inline] f2fs_write_data_pages+0x1efe/0x3a90 fs/f2fs/data.c:3315 do_writepages+0x35b/0x870 mm/page-writeback.c:2612 __writeback_single_inode+0x165/0x10b0 fs/fs-writeback.c:1650 writeback_sb_inodes+0x905/0x1260 fs/fs-writeback.c:1941 wb_writeback+0x457/0xce0 fs/fs-writeback.c:2117 wb_do_writeback fs/fs-writeback.c:2264 [inline] wb_workfn+0x410/0x1090 fs/fs-writeback.c:2304 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa12/0x17c0 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 The root cause is: inline_data inode can be fuzzed, so that there may be valid blkaddr in its direct node, once f2fs triggers background GC to migrate the block, it will hit f2fs_bug_on() during dirty page writeback. Let's add sanity check on F2FS_INLINE_DATA flag in inode during GC, so that, it can forbid migrating inline_data inode's data block for fixing.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/fc01008c92f40015aeeced94750855a7111b6929
- https://git.kernel.org/stable/c/26c07775fb5dc74351d1c3a2bc3cdf609b03e49f
- https://git.kernel.org/stable/c/ae00e6536a2dd54b64b39e9a39548870cf835745
- https://git.kernel.org/stable/c/fc01008c92f40015aeeced94750855a7111b6929
- https://ubuntu.com/security/CVE-2024-44942
- https://ubuntu.com/security/notices/USN-7121-1
- https://ubuntu.com/security/notices/USN-7121-2
- https://ubuntu.com/security/notices/USN-7121-3
- https://ubuntu.com/security/notices/USN-7148-1
- https://ubuntu.com/security/notices/USN-7154-1
- https://ubuntu.com/security/notices/USN-7154-2
- https://ubuntu.com/security/notices/USN-7155-1
- https://ubuntu.com/security/notices/USN-7156-1
- https://ubuntu.com/security/notices/USN-7159-1
- https://ubuntu.com/security/notices/USN-7159-2
- https://ubuntu.com/security/notices/USN-7159-3
- https://ubuntu.com/security/notices/USN-7159-4
- https://ubuntu.com/security/notices/USN-7159-5
- https://ubuntu.com/security/notices/USN-7166-1
- https://ubuntu.com/security/notices/USN-7166-2
- https://ubuntu.com/security/notices/USN-7166-3
- https://ubuntu.com/security/notices/USN-7166-4
- https://ubuntu.com/security/notices/USN-7186-1
- https://ubuntu.com/security/notices/USN-7186-2
- https://ubuntu.com/security/notices/USN-7194-1
- https://ubuntu.com/security/notices/USN-7195-1
- https://ubuntu.com/security/notices/USN-7195-2
- https://ubuntu.com/security/notices/USN-7196-1
- https://www.cve.org/CVERecord?id=CVE-2024-44942