{
"schemaVersion": 1,
"attribution": [
{
"source": "CISA Known Exploited Vulnerabilities",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
"licence": "US government work"
},
{
"source": "GitHub Advisory Database",
"url": "https://github.com/advisories",
"licence": "CC BY 4.0"
},
{
"source": "Have I Been Pwned",
"url": "https://haveibeenpwned.com/",
"licence": "CC BY 4.0"
},
{
"source": "CVE Program (CVE records)",
"url": "https://www.cve.org/Legal/TermsOfUse",
"licence": "CVE Terms of Use",
"notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
"terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
},
{
"source": "FIRST EPSS",
"url": "https://www.first.org/epss/",
"licence": "free to use; FIRST requests attribution"
}
],
"record": {
"id": "CVE-2023-53862",
"sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53862",
"idYear": 2023,
"status": "PUBLISHED",
"publishedAt": "2025-12-09T01:30:30.902Z",
"updatedAt": "2026-08-05T09:16:26.547Z",
"importedAt": "2026-10-24T01:57:03.413Z",
"snapshot": {
"id": "cve_2026-10-24_midnight_baseline",
"at": "2026-10-24T00:00:00.000Z",
"source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
},
"facts": {
"title": "hfs: fix missing hfs_bnode_get() in __hfs_bnode_create",
"summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nhfs: fix missing hfs_bnode_get() in __hfs_bnode_create\n\nSyzbot found a kernel BUG in hfs_bnode_put():\n\n kernel BUG at fs/hfs/bnode.c:466!\n invalid opcode: 0000 [#1] PREEMPT SMP KASAN\n CPU: 0 PID: 3634 Comm: kworker/u4:5 Not tainted 6.1.0-rc7-syzkaller-00190-g97ee9d1c1696 #0\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022\n Workqueue: writeback wb_workfn (flush-7:0)\n RIP: 0010:hfs_bnode_put+0x46f/0x480 fs/hfs/bnode.c:466\n Code: 8a 80 ff e9 73 fe ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c a0 fe ff ff 48 89 df e8 db 8a 80 ff e9 93 fe ff ff e8 a1 68 2c ff <0f> 0b e8 9a 68 2c ff 0f 0b 0f 1f 84 00 00 00 00 00 55 41 57 41 56\n RSP: 0018:ffffc90003b4f258 EFLAGS: 00010293\n RAX: ffffffff825e318f RBX: 0000000000000000 RCX: ffff8880739dd7c0\n RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000\n RBP: ffffc90003b4f430 R08: ffffffff825e2d9b R09: ffffed10045157d1\n R10: ffffed10045157d1 R11: 1ffff110045157d0 R12: ffff8880228abe80\n R13: ffff88807016c000 R14: dffffc0000000000 R15: ffff8880228abe00\n FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007fa6ebe88718 CR3: 000000001e93d000 CR4: 00000000003506f0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n \n hfs_write_inode+0x1bc/0xb40\n write_inode fs/fs-writeback.c:1440 [inline]\n __writeback_single_inode+0x4d6/0x670 fs/fs-writeback.c:1652\n writeback_sb_inodes+0xb3b/0x18f0 fs/fs-writeback.c:1878\n __writeback_inodes_wb+0x125/0x420 fs/fs-writeback.c:1949\n wb_writeback+0x440/0x7b0 fs/fs-writeback.c:2054\n wb_check_start_all fs/fs-writeback.c:2176 [inline]\n wb_do_writeback fs/fs-writeback.c:2202 [inline]\n wb_workfn+0x827/0xef0 fs/fs-writeback.c:2235\n process_one_work+0x877/0xdb0 kernel/workqueue.c:2289\n worker_thread+0xb14/0x1330 kernel/workqueue.c:2436\n kthread+0x266/0x300 kernel/kthread.c:376\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\n \n\nThe BUG_ON() is triggered at here:\n\n/* Dispose of resources used by a node */\nvoid hfs_bnode_put(struct hfs_bnode *node)\n{\n\tif (node) {\n \t\t\n \t\tBUG_ON(!atomic_read(&node->refcnt)); <- we have issue here!!!!\n \t\t\n \t}\n}\n\nBy tracing the refcnt, I found the node is created by hfs_bmap_alloc()\nwith refcnt 1. Then the node is used by hfs_btree_write(). There is a\nmissing of hfs_bnode_get() after find the node. The issue happened in\nfollowing path:\n\n\n hfs_bmap_alloc\n hfs_bnode_find\n __hfs_bnode_create <- allocate a new node with refcnt 1.\n hfs_bnode_put <- decrease the refcnt\n\n\n hfs_btree_write\n hfs_bnode_find\n __hfs_bnode_create\n hfs_bnode_findhash <- find the node without refcnt increased.\n hfs_bnode_put\t <- trigger the BUG_ON() since refcnt is 0.",
"affected": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"versions": [
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"status": "affected",
"versionType": "git",
"lessThan": "062af3e9930762d1fd22946748d34e0d859e4a8e"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"status": "affected",
"versionType": "git",
"lessThan": "3a9065a33988c02789722be612f7c42fb8ebbb22"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"status": "affected",
"versionType": "git",
"lessThan": "eda6879272e4df5456afc36642052ea066f58410"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"status": "affected",
"versionType": "git",
"lessThan": "dc9f78b6d254427a06e568f2887b1011ef3143ef"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"status": "affected",
"versionType": "git",
"lessThan": "2cab8db14566cf6a516c1f103a60cf6b7f54b1e5"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"status": "affected",
"versionType": "git",
"lessThan": "8140cdc57bc5844cd5e1392673ec2dbf8fdc6940"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"status": "affected",
"versionType": "git",
"lessThan": "38d72e6604b9f96dffcc0565090cc01622a37b2a"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"status": "affected",
"versionType": "git",
"lessThan": "a9dc087fd3c484fd1ed18c5efb290efaaf44ce03"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"versions": [
{
"version": "2.6.12",
"status": "affected"
},
{
"version": "0",
"status": "unaffected",
"versionType": "semver",
"lessThan": "2.6.12"
},
{
"version": "4.14.308",
"status": "unaffected",
"versionType": "semver",
"lessThanOrEqual": "4.14.*"
},
{
"version": "4.19.276",
"status": "unaffected",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"version": "5.4.235",
"status": "unaffected",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"version": "5.10.173",
"status": "unaffected",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"version": "5.15.99",
"status": "unaffected",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"version": "6.1.16",
"status": "unaffected",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"version": "6.2.3",
"status": "unaffected",
"versionType": "semver",
"lessThanOrEqual": "6.2.*"
},
{
"version": "6.3",
"status": "unaffected",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
]
}
]
}
}
}