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cvelist/2024/26xxx/CVE-2024-26987.json
CVE Team e4db9aef63
"-Synchronized-Data."
2024-11-05 10:00:47 +00:00

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{
"data_version": "4.0",
"data_type": "CVE",
"data_format": "MITRE",
"CVE_data_meta": {
"ID": "CVE-2024-26987",
"ASSIGNER": "cve@kernel.org",
"STATE": "PUBLIC"
},
"description": {
"description_data": [
{
"lang": "eng",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/memory-failure: fix deadlock when hugetlb_optimize_vmemmap is enabled\n\nWhen I did hard offline test with hugetlb pages, below deadlock occurs:\n\n======================================================\nWARNING: possible circular locking dependency detected\n6.8.0-11409-gf6cef5f8c37f #1 Not tainted\n------------------------------------------------------\nbash/46904 is trying to acquire lock:\nffffffffabe68910 (cpu_hotplug_lock){++++}-{0:0}, at: static_key_slow_dec+0x16/0x60\n\nbut task is already holding lock:\nffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, at: zone_pcp_disable+0x16/0x40\n\nwhich lock already depends on the new lock.\n\nthe existing dependency chain (in reverse order) is:\n\n-> #1 (pcp_batch_high_lock){+.+.}-{3:3}:\n __mutex_lock+0x6c/0x770\n page_alloc_cpu_online+0x3c/0x70\n cpuhp_invoke_callback+0x397/0x5f0\n __cpuhp_invoke_callback_range+0x71/0xe0\n _cpu_up+0xeb/0x210\n cpu_up+0x91/0xe0\n cpuhp_bringup_mask+0x49/0xb0\n bringup_nonboot_cpus+0xb7/0xe0\n smp_init+0x25/0xa0\n kernel_init_freeable+0x15f/0x3e0\n kernel_init+0x15/0x1b0\n ret_from_fork+0x2f/0x50\n ret_from_fork_asm+0x1a/0x30\n\n-> #0 (cpu_hotplug_lock){++++}-{0:0}:\n __lock_acquire+0x1298/0x1cd0\n lock_acquire+0xc0/0x2b0\n cpus_read_lock+0x2a/0xc0\n static_key_slow_dec+0x16/0x60\n __hugetlb_vmemmap_restore_folio+0x1b9/0x200\n dissolve_free_huge_page+0x211/0x260\n __page_handle_poison+0x45/0xc0\n memory_failure+0x65e/0xc70\n hard_offline_page_store+0x55/0xa0\n kernfs_fop_write_iter+0x12c/0x1d0\n vfs_write+0x387/0x550\n ksys_write+0x64/0xe0\n do_syscall_64+0xca/0x1e0\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\n\nother info that might help us debug this:\n\n Possible unsafe locking scenario:\n\n CPU0 CPU1\n ---- ----\n lock(pcp_batch_high_lock);\n lock(cpu_hotplug_lock);\n lock(pcp_batch_high_lock);\n rlock(cpu_hotplug_lock);\n\n *** DEADLOCK ***\n\n5 locks held by bash/46904:\n #0: ffff98f6c3bb23f0 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0x64/0xe0\n #1: ffff98f6c328e488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0xf8/0x1d0\n #2: ffff98ef83b31890 (kn->active#113){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x100/0x1d0\n #3: ffffffffabf9db48 (mf_mutex){+.+.}-{3:3}, at: memory_failure+0x44/0xc70\n #4: ffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, at: zone_pcp_disable+0x16/0x40\n\nstack backtrace:\nCPU: 10 PID: 46904 Comm: bash Kdump: loaded Not tainted 6.8.0-11409-gf6cef5f8c37f #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014\nCall Trace:\n <TASK>\n dump_stack_lvl+0x68/0xa0\n check_noncircular+0x129/0x140\n __lock_acquire+0x1298/0x1cd0\n lock_acquire+0xc0/0x2b0\n cpus_read_lock+0x2a/0xc0\n static_key_slow_dec+0x16/0x60\n __hugetlb_vmemmap_restore_folio+0x1b9/0x200\n dissolve_free_huge_page+0x211/0x260\n __page_handle_poison+0x45/0xc0\n memory_failure+0x65e/0xc70\n hard_offline_page_store+0x55/0xa0\n kernfs_fop_write_iter+0x12c/0x1d0\n vfs_write+0x387/0x550\n ksys_write+0x64/0xe0\n do_syscall_64+0xca/0x1e0\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\nRIP: 0033:0x7fc862314887\nCode: 10 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24\nRSP: 002b:00007fff19311268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\nRAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007fc862314887\nRDX: 000000000000000c RSI: 000056405645fe10 RDI: 0000000000000001\nRBP: 000056405645fe10 R08: 00007fc8623d1460 R09: 000000007fffffff\nR10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000c\nR13: 00007fc86241b780 R14: 00007fc862417600 R15: 00007fc862416a00\n\nIn short, below scene breaks the \n---truncated---"
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"affects": {
"vendor": {
"vendor_data": [
{
"vendor_name": "Linux",
"product": {
"product_data": [
{
"product_name": "Linux",
"version": {
"version_data": [
{
"version_affected": "<",
"version_name": "a6b40850c442",
"version_value": "5ef7ba2799a3"
},
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
"versions": [
{
"version": "5.18",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.18",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.88",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.29",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.8.8",
"lessThanOrEqual": "6.8.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.9",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
],
"defaultStatus": "affected"
}
}
]
}
}
]
}
}
]
}
},
"references": {
"reference_data": [
{
"url": "https://git.kernel.org/stable/c/5ef7ba2799a3b5ed292b8f6407376e2c25ef002e",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/5ef7ba2799a3b5ed292b8f6407376e2c25ef002e"
},
{
"url": "https://git.kernel.org/stable/c/882e1180c83f5b75bae03d0ccc31ccedfe5159de",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/882e1180c83f5b75bae03d0ccc31ccedfe5159de"
},
{
"url": "https://git.kernel.org/stable/c/49955b24002dc16a0ae2e83a57a2a6c863a1845c",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/49955b24002dc16a0ae2e83a57a2a6c863a1845c"
},
{
"url": "https://git.kernel.org/stable/c/1983184c22dd84a4d95a71e5c6775c2638557dc7",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/1983184c22dd84a4d95a71e5c6775c2638557dc7"
}
]
},
"generator": {
"engine": "bippy-9e1c9544281a"
}
}
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