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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2023-52604

FS:JFS:UBSAN:array-index-out-of-bounds in dbAdjTree

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: FS:JFS:UBSAN:array-index-out-of-bounds in dbAdjTree Syzkaller reported the following issue: UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2867:6 index 196694 is out of range for type 's8[1365]' (aka 'signed char[1365]') CPU: 1 PID: 109 Comm: jfsCommit Not tainted 6.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:217 [inline] __ubsan_handle_out_of_bounds+0x11c/0x150 lib/ubsan.c:348 dbAdjTree+0x474/0x4f0 fs/jfs/jfs_dmap.c:2867 dbJoin+0x210/0x2d0 fs/jfs/jfs_dmap.c:2834 dbFreeBits+0x4eb/0xda0 fs/jfs/jfs_dmap.c:2331 dbFreeDmap fs/jfs/jfs_dmap.c:2080 [inline] dbFree+0x343/0x650 fs/jfs/jfs_dmap.c:402 txFreeMap+0x798/0xd50 fs/jfs/jfs_txnmgr.c:2534 txUpdateMap+0x342/0x9e0 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline] jfs_lazycommit+0x47a/0xb70 fs/jfs/jfs_txnmgr.c:2732 kthread+0x2d3/0x370 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 </TASK> ================================================================================ Kernel panic - not syncing: UBSAN: panic_on_warn set ... CPU: 1 PID: 109 Comm: jfsCommit Not tainted 6.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 panic+0x30f/0x770 kernel/panic.c:340 check_panic_on_warn+0x82/0xa0 kernel/panic.c:236 ubsan_epilogue lib/ubsan.c:223 [inline] __ubsan_handle_out_of_bounds+0x13c/0x150 lib/ubsan.c:348 dbAdjTree+0x474/0x4f0 fs/jfs/jfs_dmap.c:2867 dbJoin+0x210/0x2d0 fs/jfs/jfs_dmap.c:2834 dbFreeBits+0x4eb/0xda0 fs/jfs/jfs_dmap.c:2331 dbFreeDmap fs/jfs/jfs_dmap.c:2080 [inline] dbFree+0x343/0x650 fs/jfs/jfs_dmap.c:402 txFreeMap+0x798/0xd50 fs/jfs/jfs_txnmgr.c:2534 txUpdateMap+0x342/0x9e0 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline] jfs_lazycommit+0x47a/0xb70 fs/jfs/jfs_txnmgr.c:2732 kthread+0x2d3/0x370 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 </TASK> Kernel Offset: disabled Rebooting in 86400 seconds.. The issue is caused when the value of lp becomes greater than CTLTREESIZE which is the max size of stree. Adding a simple check solves this issue. Dave: As the function returns a void, good error handling would require a more intrusive code reorganization, so I modified Osama's patch at use WARN_ON_ONCE for lack of a cleaner option. The patch is tested via syzbot.

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

  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < e3e95c6850661c77e6dab079d9b5374a618ebb15affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 98f9537fe61b8382b3cc5dd97347531698517c56affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < de34de6e57bbbc868e4fcf9e98c76b3587cabb0baffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 6fe8b702125aeee6ce83f20092a2341446704e7baffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 42f433785f108893de0dd5260bafb85d7d51db03affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 6a44065dd604972ec1fbcccbdc4a70d266a89cddaffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 59342822276f753e49d27ef5eebffbba990572b9affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 9862ec7ac1cbc6eb5ee4a045b5d5b8edbb2f7e68affected

Linux Linux

Default version status: affected

  • 2.6.12affected
  • 0 to < 2.6.12unaffected
  • 4.19.307 to ≤ 4.19.*unaffected
  • 5.4.269 to ≤ 5.4.*unaffected
  • 5.10.210 to ≤ 5.10.*unaffected
  • 5.15.149 to ≤ 5.15.*unaffected
  • 6.1.77 to ≤ 6.1.*unaffected
  • 6.6.16 to ≤ 6.6.*unaffected
  • 6.7.4 to ≤ 6.7.*unaffected
  • 6.8 to ≤ *unaffected

References