CVE-2022-50262

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

fs/ntfs3: Validate BOOT record_size

When the NTFS BOOT record_size field < 0, it represents a

shift value. However, there is no sanity check on the shift result

and the sbi->record_bits calculation through blksize_bits() assumes

the size always > 256, which could lead to NPD while mounting a

malformed NTFS image.

[ 318.675159] BUG: kernel NULL pointer dereference, address: 0000000000000158

[ 318.675682] #PF: supervisor read access in kernel mode

[ 318.675869] #PF: error_code(0x0000) - not-present page

[ 318.676246] PGD 0 P4D 0

[ 318.676502] Oops: 0000 [#1] PREEMPT SMP NOPTI

[ 318.676934] CPU: 0 PID: 259 Comm: mount Not tainted 5.19.0 #5

[ 318.677289] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014

[ 318.678136] RIP: 0010:ni_find_attr+0x2d/0x1c0

[ 318.678656] Code: 89 ca 4d 89 c7 41 56 41 55 41 54 41 89 cc 55 48 89 fd 53 48 89 d3 48 83 ec 20 65 48 8b 04 25 28 00 00 00 48 89 44 24 180

[ 318.679848] RSP: 0018:ffffa6c8c0297bd8 EFLAGS: 00000246

[ 318.680104] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000080

[ 318.680790] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000

[ 318.681679] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000

[ 318.682577] R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000000080

[ 318.683015] R13: ffff8d5582e68400 R14: 0000000000000100 R15: 0000000000000000

[ 318.683618] FS: 00007fd9e1c81e40(0000) GS:ffff8d55fdc00000(0000) knlGS:0000000000000000

[ 318.684280] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

[ 318.684651] CR2: 0000000000000158 CR3: 0000000002e1a000 CR4: 00000000000006f0

[ 318.685623] Call Trace:

[ 318.686607] <TASK>

[ 318.686872] ? ntfs_alloc_inode+0x1a/0x60

[ 318.687235] attr_load_runs_vcn+0x2b/0xa0

[ 318.687468] mi_read+0xbb/0x250

[ 318.687576] ntfs_iget5+0x114/0xd90

[ 318.687750] ntfs_fill_super+0x588/0x11b0

[ 318.687953] ? put_ntfs+0x130/0x130

[ 318.688065] ? snprintf+0x49/0x70

[ 318.688164] ? put_ntfs+0x130/0x130

[ 318.688256] get_tree_bdev+0x16a/0x260

[ 318.688407] vfs_get_tree+0x20/0xb0

[ 318.688519] path_mount+0x2dc/0x9b0

[ 318.688877] do_mount+0x74/0x90

[ 318.689142] __x64_sys_mount+0x89/0xd0

[ 318.689636] do_syscall_64+0x3b/0x90

[ 318.689998] entry_SYSCALL_64_after_hwframe+0x63/0xcd

[ 318.690318] RIP: 0033:0x7fd9e133c48a

[ 318.690687] Code: 48 8b 0d 11 fa 2a 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 008

[ 318.691357] RSP: 002b:00007ffd374406c8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5

[ 318.691632] RAX: ffffffffffffffda RBX: 0000564d0b051080 RCX: 00007fd9e133c48a

[ 318.691920] RDX: 0000564d0b051280 RSI: 0000564d0b051300 RDI: 0000564d0b0596a0

[ 318.692123] RBP: 0000000000000000 R08: 0000564d0b0512a0 R09: 0000000000000020

[ 318.692349] R10: 00000000c0ed0000 R11: 0000000000000202 R12: 0000564d0b0596a0

[ 318.692673] R13: 0000564d0b051280 R14: 0000000000000000 R15: 00000000ffffffff

[ 318.693007] </TASK>

[ 318.693271] Modules linked in:

[ 318.693614] CR2: 0000000000000158

[ 318.694446] ---[ end trace 0000000000000000 ]---

[ 318.694779] RIP: 0010:ni_find_attr+0x2d/0x1c0

[ 318.694952] Code: 89 ca 4d 89 c7 41 56 41 55 41 54 41 89 cc 55 48 89 fd 53 48 89 d3 48 83 ec 20 65 48 8b 04 25 28 00 00 00 48 89 44 24 180

[ 318.696042] RSP: 0018:ffffa6c8c0297bd8 EFLAGS: 00000246

[ 318.696531] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000080

[ 318.698114] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000

[ 318.699286] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000

[ 318.699795] R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000000080

[ 318.700236] R13: ffff8d5582e68400 R14: 0000000000000100 R15: 0000000000000000

[ 318.700973] FS: 00007fd9e1c81e40(0000) GS:ffff8d55fdc00000(0000) knlGS:0000000000000000

[

---truncated---