{"id":"CVE-2023-52604","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nFS:JFS:UBSAN:array-index-out-of-bounds in dbAdjTree\n\nSyzkaller reported the following issue:\n\nUBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2867:6\nindex 196694 …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nFS:JFS:UBSAN:array-index-out-of-bounds in dbAdjTree\n\nSyzkaller reported the following issue:\n\nUBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2867:6\nindex 196694 …","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-129"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel < 4.19.307","linux_kernel >= 4.20, < 5.4.269","linux_kernel >= 5.5, < 5.10.210","linux_kernel >= 5.11, < 5.15.149","linux_kernel >= 5.16, < 6.1.77","linux_kernel >= 6.2, < 6.6.16","linux_kernel >= 6.7, < 6.7.4"],"patched":["linux_kernel 6.7.4"],"published":"2024-03-06","updated":"2026-08-04","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-52604","references":[{"url":"https://git.kernel.org/stable/c/42f433785f108893de0dd5260bafb85d7d51db03","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/59342822276f753e49d27ef5eebffbba990572b9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6a44065dd604972ec1fbcccbdc4a70d266a89cdd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6fe8b702125aeee6ce83f20092a2341446704e7b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9862ec7ac1cbc6eb5ee4a045b5d5b8edbb2f7e68","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/98f9537fe61b8382b3cc5dd97347531698517c56","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/de34de6e57bbbc868e4fcf9e98c76b3587cabb0b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e3e95c6850661c77e6dab079d9b5374a618ebb15","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/42f433785f108893de0dd5260bafb85d7d51db03","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/59342822276f753e49d27ef5eebffbba990572b9","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/6a44065dd604972ec1fbcccbdc4a70d266a89cdd","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/6fe8b702125aeee6ce83f20092a2341446704e7b","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/9862ec7ac1cbc6eb5ee4a045b5d5b8edbb2f7e68","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/98f9537fe61b8382b3cc5dd97347531698517c56","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/de34de6e57bbbc868e4fcf9e98c76b3587cabb0b","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/e3e95c6850661c77e6dab079d9b5374a618ebb15","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00249,"epssPercentile":0.16556,"ingestedAt":"2026-08-05T05:58:02.891Z","slug":"CVE-2023-52604","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nFS:JFS:UBSAN:array-index-out-of-bounds in dbAdjTree\n\nSyzkaller reported the following issue:\n\nUBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2867:6\nindex 196694 is out of range for type 's8[1365]' (aka 'signed char[1365]')\nCPU: 1 PID: 109 Comm: jfsCommit Not tainted 6.6.0-rc3-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106\n ubsan_epilogue lib/ubsan.c:217 [inline]\n __ubsan_handle_out_of_bounds+0x11c/0x150 lib/ubsan.c:348\n dbAdjTree+0x474/0x4f0 fs/jfs/jfs_dmap.c:2867\n dbJoin+0x210/0x2d0 fs/jfs/jfs_dmap.c:2834\n dbFreeBits+0x4eb/0xda0 fs/jfs/jfs_dmap.c:2331\n dbFreeDmap fs/jfs/jfs_dmap.c:2080 [inline]\n dbFree+0x343/0x650 fs/jfs/jfs_dmap.c:402\n txFreeMap+0x798/0xd50 fs/jfs/jfs_txnmgr.c:2534\n txUpdateMap+0x342/0x9e0\n txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]\n jfs_lazycommit+0x47a/0xb70 fs/jfs/jfs_txnmgr.c:2732\n kthread+0x2d3/0x370 kernel/kthread.c:388\n ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304\n </TASK>\n================================================================================\nKernel panic - not syncing: UBSAN: panic_on_warn set ...\nCPU: 1 PID: 109 Comm: jfsCommit Not tainted 6.6.0-rc3-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106\n panic+0x30f/0x770 kernel/panic.c:340\n check_panic_on_warn+0x82/0xa0 kernel/panic.c:236\n ubsan_epilogue lib/ubsan.c:223 [inline]\n __ubsan_handle_out_of_bounds+0x13c/0x150 lib/ubsan.c:348\n dbAdjTree+0x474/0x4f0 fs/jfs/jfs_dmap.c:2867\n dbJoin+0x210/0x2d0 fs/jfs/jfs_dmap.c:2834\n dbFreeBits+0x4eb/0xda0 fs/jfs/jfs_dmap.c:2331\n dbFreeDmap fs/jfs/jfs_dmap.c:2080 [inline]\n dbFree+0x343/0x650 fs/jfs/jfs_dmap.c:402\n txFreeMap+0x798/0xd50 fs/jfs/jfs_txnmgr.c:2534\n txUpdateMap+0x342/0x9e0\n txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]\n jfs_lazycommit+0x47a/0xb70 fs/jfs/jfs_txnmgr.c:2732\n kthread+0x2d3/0x370 kernel/kthread.c:388\n ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304\n </TASK>\nKernel Offset: disabled\nRebooting in 86400 seconds..\n\nThe issue is caused when the value of lp becomes greater than\nCTLTREESIZE which is the max size of stree. Adding a simple check\nsolves this issue.\n\nDave:\nAs the function returns a void, good error handling\nwould require a more intrusive code reorganization, so I modified\nOsama's patch at use WARN_ON_ONCE for lack of a cleaner option.\n\nThe patch is tested via syzbot.\n\n## Affected\n\n- `linux_kernel < 4.19.307`\n- `linux_kernel >= 4.20, < 5.4.269`\n- `linux_kernel >= 5.5, < 5.10.210`\n- `linux_kernel >= 5.11, < 5.15.149`\n- `linux_kernel >= 5.16, < 6.1.77`\n- `linux_kernel >= 6.2, < 6.6.16`\n- `linux_kernel >= 6.7, < 6.7.4`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.7.4`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}