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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2022-50753

f2fs: fix to do sanity check on summary info

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on summary info As Wenqing Liu reported in bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216456 BUG: KASAN: use-after-free in recover_data+0x63ae/0x6ae0 [f2fs] Read of size 4 at addr ffff8881464dcd80 by task mount/1013 CPU: 3 PID: 1013 Comm: mount Tainted: G W 6.0.0-rc4 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 Call Trace: dump_stack_lvl+0x45/0x5e print_report.cold+0xf3/0x68d kasan_report+0xa8/0x130 recover_data+0x63ae/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 The root cause is: in fuzzed image, SSA table is corrupted: ofs_in_node is larger than ADDRS_PER_PAGE(), result in out-of-range access on 4k-size page. - recover_data - do_recover_data - check_index_in_prev_nodes - f2fs_data_blkaddr This patch adds sanity check on summary info in recovery and GC flow in where the flows rely on them. After patch: [ 29.310883] F2FS-fs (loop0): Inconsistent ofs_in_node:65286 in summary, ino:0, nid:6, max:1018

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • b292dcab068e141d8a820b77cbcc88d98c610eb4 to < c99860f9a75079f339ed7670425b1ac58f26e2ffaffected
  • b292dcab068e141d8a820b77cbcc88d98c610eb4 to < 4a8e8bf280703e04e0b9d91f101e1fdd9a5bd09eaffected
  • b292dcab068e141d8a820b77cbcc88d98c610eb4 to < 73687c53919f49dff3852155621dab7a35c52854affected
  • b292dcab068e141d8a820b77cbcc88d98c610eb4 to < e168f819bfa42459b14f479e55ebd550bcc78899affected
  • b292dcab068e141d8a820b77cbcc88d98c610eb4 to < 0922ad64ccefa3e483e84355942b86e13c8fea68affected
  • b292dcab068e141d8a820b77cbcc88d98c610eb4 to < c6ad7fd16657ebd34a87a97d9588195aae87597daffected

Linux Linux

Default version status: affected

  • 3.11affected
  • 0 to < 3.11unaffected
  • 5.4.220 to ≤ 5.4.*unaffected
  • 5.10.150 to ≤ 5.10.*unaffected
  • 5.15.75 to ≤ 5.15.*unaffected
  • 5.19.17 to ≤ 5.19.*unaffected
  • 6.0.3 to ≤ 6.0.*unaffected
  • 6.1 to ≤ *unaffected

References