CVE-2024-26987
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-26987
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26987.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-26987
- Downstream
- Related
- Published
- 2024-05-01T05:27:34Z
- Modified
- 2025-10-15T09:57:25.066312Z
- Summary
- mm/memory-failure: fix deadlock when hugetlb_optimize_vmemmap is enabled
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mm/memory-failure: fix deadlock when hugetlboptimizevmemmap is enabled
When I did hard offline test with hugetlb pages, below deadlock occurs:
====================================================== WARNING: possible circular locking dependency detected
6.8.0-11409-gf6cef5f8c37f #1 Not tainted
bash/46904 is trying to acquire lock: ffffffffabe68910 (cpuhotpluglock){++++}-{0:0}, at: statickeyslow_dec+0x16/0x60
but task is already holding lock: ffffffffabf92ea8 (pcpbatchhighlock){+.+.}-{3:3}, at: zonepcp_disable+0x16/0x40
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (pcpbatchhighlock){+.+.}-{3:3}: _mutexlock+0x6c/0x770 pagealloccpuonline+0x3c/0x70 cpuhpinvokecallback+0x397/0x5f0 _cpuhpinvokecallbackrange+0x71/0xe0 cpuup+0xeb/0x210 cpuup+0x91/0xe0 cpuhpbringupmask+0x49/0xb0 bringupnonbootcpus+0xb7/0xe0 smpinit+0x25/0xa0 kernelinitfreeable+0x15f/0x3e0 kernelinit+0x15/0x1b0 retfromfork+0x2f/0x50 retfromforkasm+0x1a/0x30
-> #0 (cpuhotpluglock){++++}-{0:0}: _lockacquire+0x1298/0x1cd0 lockacquire+0xc0/0x2b0 cpusreadlock+0x2a/0xc0 statickeyslowdec+0x16/0x60 _hugetlbvmemmaprestorefolio+0x1b9/0x200 dissolvefreehugepage+0x211/0x260 _pagehandlepoison+0x45/0xc0 memoryfailure+0x65e/0xc70 hardofflinepagestore+0x55/0xa0 kernfsfopwriteiter+0x12c/0x1d0 vfswrite+0x387/0x550 ksyswrite+0x64/0xe0 dosyscall64+0xca/0x1e0 entrySYSCALL64after_hwframe+0x6d/0x75
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1 ---- ----lock(pcpbatchhighlock); lock(cpuhotpluglock); lock(pcpbatchhighlock); rlock(cpuhotpluglock);
* DEADLOCK *
5 locks held by bash/46904: #0: ffff98f6c3bb23f0 (sbwriters#5){.+.+}-{0:0}, at: ksyswrite+0x64/0xe0 #1: ffff98f6c328e488 (&of->mutex){+.+.}-{3:3}, at: kernfsfopwriteiter+0xf8/0x1d0 #2: ffff98ef83b31890 (kn->active#113){.+.+}-{0:0}, at: kernfsfopwriteiter+0x100/0x1d0 #3: ffffffffabf9db48 (mfmutex){+.+.}-{3:3}, at: memoryfailure+0x44/0xc70 #4: ffffffffabf92ea8 (pcpbatchhighlock){+.+.}-{3:3}, at: zonepcp_disable+0x16/0x40
stack backtrace: CPU: 10 PID: 46904 Comm: bash Kdump: loaded Not tainted 6.8.0-11409-gf6cef5f8c37f #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: <TASK> dumpstacklvl+0x68/0xa0 checknoncircular+0x129/0x140 _lockacquire+0x1298/0x1cd0 lockacquire+0xc0/0x2b0 cpusreadlock+0x2a/0xc0 statickeyslowdec+0x16/0x60 _hugetlbvmemmaprestorefolio+0x1b9/0x200 dissolvefreehugepage+0x211/0x260 _pagehandlepoison+0x45/0xc0 memoryfailure+0x65e/0xc70 hardofflinepagestore+0x55/0xa0 kernfsfopwriteiter+0x12c/0x1d0 vfswrite+0x387/0x550 ksyswrite+0x64/0xe0 dosyscall64+0xca/0x1e0 entrySYSCALL64afterhwframe+0x6d/0x75 RIP: 0033:0x7fc862314887 Code: 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 RSP: 002b:00007fff19311268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007fc862314887 RDX: 000000000000000c RSI: 000056405645fe10 RDI: 0000000000000001 RBP: 000056405645fe10 R08: 00007fc8623d1460 R09: 000000007fffffff R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000c R13: 00007fc86241b780 R14: 00007fc862417600 R15: 00007fc862416a00
In short, below scene breaks the ---truncated---
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/1983184c22dd84a4d95a71e5c6775c2638557dc7
- https://git.kernel.org/stable/c/49955b24002dc16a0ae2e83a57a2a6c863a1845c
- https://git.kernel.org/stable/c/5ef7ba2799a3b5ed292b8f6407376e2c25ef002e
- https://git.kernel.org/stable/c/882e1180c83f5b75bae03d0ccc31ccedfe5159de
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda6b40850c442bf996e729e1d441d3dbc37cea171Fixed5ef7ba2799a3b5ed292b8f6407376e2c25ef002e
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda6b40850c442bf996e729e1d441d3dbc37cea171Fixed882e1180c83f5b75bae03d0ccc31ccedfe5159de
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda6b40850c442bf996e729e1d441d3dbc37cea171Fixed49955b24002dc16a0ae2e83a57a2a6c863a1845c
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda6b40850c442bf996e729e1d441d3dbc37cea171Fixed1983184c22dd84a4d95a71e5c6775c2638557dc7
Affected versions
v5.*
v6.*
Database specific
{
"vanir_signatures": [
{
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1983184c22dd84a4d95a71e5c6775c2638557dc7",
"signature_type": "Line",
"target": {
"file": "mm/memory-failure.c"
},
"deprecated": false,
"digest": {
"line_hashes": [
"89275256280153037777270549164845905168",
"265182954862327734355897295562512806088",
"225256957549097494078832530254740915511",
"26279703555693512730573600305334491176",
"213419292817457834270812366876151700905",
"182397218503753624709425433594308729588",
"231452620414635822532417346978931077811",
"255454510611859990890901753000630508280"
],
"threshold": 0.9
},
"id": "CVE-2024-26987-043ad4dd"
},
{
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@5ef7ba2799a3b5ed292b8f6407376e2c25ef002e",
"signature_type": "Line",
"target": {
"file": "mm/memory-failure.c"
},
"deprecated": false,
"digest": {
"line_hashes": [
"89275256280153037777270549164845905168",
"265182954862327734355897295562512806088",
"225256957549097494078832530254740915511",
"26279703555693512730573600305334491176",
"213419292817457834270812366876151700905",
"182397218503753624709425433594308729588",
"231452620414635822532417346978931077811",
"255454510611859990890901753000630508280"
],
"threshold": 0.9
},
"id": "CVE-2024-26987-11f12d64"
},
{
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1983184c22dd84a4d95a71e5c6775c2638557dc7",
"signature_type": "Function",
"target": {
"function": "__page_handle_poison",
"file": "mm/memory-failure.c"
},
"deprecated": false,
"digest": {
"length": 203.0,
"function_hash": "18935243401722486771400325038510316735"
},
"id": "CVE-2024-26987-150cc51a"
},
{
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@882e1180c83f5b75bae03d0ccc31ccedfe5159de",
"signature_type": "Function",
"target": {
"function": "__page_handle_poison",
"file": "mm/memory-failure.c"
},
"deprecated": false,
"digest": {
"length": 203.0,
"function_hash": "18935243401722486771400325038510316735"
},
"id": "CVE-2024-26987-78fd0f5d"
},
{
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@49955b24002dc16a0ae2e83a57a2a6c863a1845c",
"signature_type": "Function",
"target": {
"function": "__page_handle_poison",
"file": "mm/memory-failure.c"
},
"deprecated": false,
"digest": {
"length": 203.0,
"function_hash": "18935243401722486771400325038510316735"
},
"id": "CVE-2024-26987-9e69fa4e"
},
{
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@882e1180c83f5b75bae03d0ccc31ccedfe5159de",
"signature_type": "Line",
"target": {
"file": "mm/memory-failure.c"
},
"deprecated": false,
"digest": {
"line_hashes": [
"89275256280153037777270549164845905168",
"265182954862327734355897295562512806088",
"225256957549097494078832530254740915511",
"26279703555693512730573600305334491176",
"213419292817457834270812366876151700905",
"182397218503753624709425433594308729588",
"231452620414635822532417346978931077811",
"255454510611859990890901753000630508280"
],
"threshold": 0.9
},
"id": "CVE-2024-26987-b82dc173"
},
{
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@49955b24002dc16a0ae2e83a57a2a6c863a1845c",
"signature_type": "Line",
"target": {
"file": "mm/memory-failure.c"
},
"deprecated": false,
"digest": {
"line_hashes": [
"89275256280153037777270549164845905168",
"265182954862327734355897295562512806088",
"225256957549097494078832530254740915511",
"26279703555693512730573600305334491176",
"213419292817457834270812366876151700905",
"182397218503753624709425433594308729588",
"231452620414635822532417346978931077811",
"255454510611859990890901753000630508280"
],
"threshold": 0.9
},
"id": "CVE-2024-26987-c5694931"
},
{
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@5ef7ba2799a3b5ed292b8f6407376e2c25ef002e",
"signature_type": "Function",
"target": {
"function": "__page_handle_poison",
"file": "mm/memory-failure.c"
},
"deprecated": false,
"digest": {
"length": 203.0,
"function_hash": "18935243401722486771400325038510316735"
},
"id": "CVE-2024-26987-cacb3212"
}
]
}