Answer in brief
CVE-2023-52604 records a High severity (CVSS 7.8) vulnerability in FS:JFS:UBSAN:array-index-out-of-bounds in dbAdjTree. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e3e95c6850661c77e6dab079d9b5374a618ebb15 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <98f9537fe61b8382b3cc5dd97347531698517c56 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <de34de6e57bbbc868e4fcf9e98c76b3587cabb0b || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6fe8b702125aeee6ce83f20092a2341446704e7b || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <42f433785f108893de0dd5260bafb85d7d51db03 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6a44065dd604972ec1fbcccbdc4a70d266a89cdd || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <59342822276f753e49d27ef5eebffbba990572b9 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9862ec7ac1cbc6eb5ee4a045b5d5b8edbb2f7e68 | e3e95c6850661c77e6dab079d9b5374a618ebb15, 98f9537fe61b8382b3cc5dd97347531698517c56, de34de6e57bbbc868e4fcf9e98c76b3587cabb0b, 6fe8b702125aeee6ce83f20092a2341446704e7b, 42f433785f108893de0dd5260bafb85d7d51db03, 6a44065dd604972ec1fbcccbdc4a70d266a89cdd, 59342822276f753e49d27ef5eebffbba990572b9, 9862ec7ac1cbc6eb5ee4a045b5d5b8edbb2f7e68 |
| Linux/Linuxgeneric | 2.6.12 | Not reported |
Published upstream
Mar 6, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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.
Quoted source text, attributed separately from HOL analysis.