CVE-2024-42252

closures: Change BUG_ON() to WARN_ON()

Severity Score

"-"

*CVSS v-

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved:

closures: Change BUG_ON() to WARN_ON()

If a BUG_ON() can be hit in the wild, it shouldn't be a BUG_ON()

For reference, this has popped up once in the CI, and we'll need more
info to debug it:

03240 ------------[ cut here ]------------
03240 kernel BUG at lib/closure.c:21!
03240 kernel BUG at lib/closure.c:21!
03240 Internal error: Oops - BUG: 00000000f2000800 [#1] SMP
03240 Modules linked in:
03240 CPU: 15 PID: 40534 Comm: kworker/u80:1 Not tainted 6.10.0-rc4-ktest-ga56da69799bd #25570
03240 Hardware name: linux,dummy-virt (DT)
03240 Workqueue: btree_update btree_interior_update_work
03240 pstate: 00001005 (nzcv daif -PAN -UAO -TCO -DIT +SSBS BTYPE=--)
03240 pc : closure_put+0x224/0x2a0
03240 lr : closure_put+0x24/0x2a0
03240 sp : ffff0000d12071c0
03240 x29: ffff0000d12071c0 x28: dfff800000000000 x27: ffff0000d1207360
03240 x26: 0000000000000040 x25: 0000000000000040 x24: 0000000000000040
03240 x23: ffff0000c1f20180 x22: 0000000000000000 x21: ffff0000c1f20168
03240 x20: 0000000040000000 x19: ffff0000c1f20140 x18: 0000000000000001
03240 x17: 0000000000003aa0 x16: 0000000000003ad0 x15: 1fffe0001c326974
03240 x14: 0000000000000a1e x13: 0000000000000000 x12: 1fffe000183e402d
03240 x11: ffff6000183e402d x10: dfff800000000000 x9 : ffff6000183e402e
03240 x8 : 0000000000000001 x7 : 00009fffe7c1bfd3 x6 : ffff0000c1f2016b
03240 x5 : ffff0000c1f20168 x4 : ffff6000183e402e x3 : ffff800081391954
03240 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 00000000a8000000
03240 Call trace:
03240 closure_put+0x224/0x2a0
03240 bch2_check_for_deadlock+0x910/0x1028
03240 bch2_six_check_for_deadlock+0x1c/0x30
03240 six_lock_slowpath.isra.0+0x29c/0xed0
03240 six_lock_ip_waiter+0xa8/0xf8
03240 __bch2_btree_node_lock_write+0x14c/0x298
03240 bch2_trans_lock_write+0x6d4/0xb10
03240 __bch2_trans_commit+0x135c/0x5520
03240 btree_interior_update_work+0x1248/0x1c10
03240 process_scheduled_works+0x53c/0xd90
03240 worker_thread+0x370/0x8c8
03240 kthread+0x258/0x2e8
03240 ret_from_fork+0x10/0x20
03240 Code: aa1303e0 d63f0020 a94363f7 17ffff8c (d4210000)
03240 ---[ end trace 0000000000000000 ]---
03240 Kernel panic - not syncing: Oops - BUG: Fatal exception
03240 SMP: stopping secondary CPUs
03241 SMP: failed to stop secondary CPUs 13,15
03241 Kernel Offset: disabled
03241 CPU features: 0x00,00000003,80000008,4240500b
03241 Memory Limit: none
03241 ---[ end Kernel panic - not syncing: Oops - BUG: Fatal exception ]---
03246 ========= FAILED TIMEOUT copygc_torture_no_checksum in 7200s

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cierres: Cambie BUG_ON() a WARN_ON() Si se puede acceder a un BUG_ON() en estado salvaje, no debería ser un BUG_ON() Como referencia, ha aparecido esto una vez en el CI, y necesitaremos más información para depurarlo: 03240 ------------[ cortar aquí ]------------ 03240 ERROR del kernel en lib /cierre.c:21! 03240 ERROR del kernel en lib/closure.c:21! 03240 Error interno: Ups - ERROR: 00000000f2000800 [#1] SMP 03240 Módulos vinculados en: 03240 CPU: 15 PID: 40534 Comm: kworker/u80:1 No contaminado 6.10.0-rc4-ktest-ga56da69799bd #25570 Nombre del hardware: linux,dummy-virt (DT) 03240 Cola de trabajo: btree_update btree_interior_update_work 03240 pstate: 00001005 (nzcv daif -PAN -UAO -TCO -DIT +SSBS BTYPE=--) 03240 pc: cierre_put+0x224/0x2a0 03240 lr: cierre_put+0x24/ 0x2a0 03240 sp: ffff0000d12071c0 03240 x29: ffff0000d12071c0 x28: dfff800000000000 x27: ffff0000d1207360 03240 x26: 0000000000000040 0000000000000040 x24: 0000000000000040 03240 x23: ffff0000c1f20180 x22: 0000000000000000 x21: ffff0000c1f20168 03240 x20: 000000 x19: ffff0000c1f20140 x18: 0000000000000001 03240 x17: 0000000000003aa0 x16 : 0000000000003ad0 x15: 1fffe0001c326974 03240 x14: 0000000000000a1e x13: 0000000000000000 x12: 1fffe000183e402d 03240 x11: e402d x10: dfff800000000000 x9: ffff6000183e402e 03240 x8: 0000000000000001 x7: 00009fffe7c1bfd3 x6: ffff0000c1f2016b 03240 x5: 0168 x4: ffff6000183e402e x3: ffff800081391954 03240 x2: 0000000000000001 x1 : 0000000000000000 x0 : 00000000a8000000 03240 Rastreo de llamadas: 03240 cierre_put+0x224/0x2a0 03240 bch2_check_for_deadlock+0x910/0x1028 03240 bch2_six_check_for_deadlock+0x1c /0x30 03240 six_lock_slowpath.isra.0+0x29c/0xed0 03240 six_lock_ip_waiter+0xa8/0xf8 03240 __bch2_btree_node_lock_write+0x14c/0x298 03240 bch2_trans_lock_write+0x6d4/0xb10 03240 __bch2_trans_commit+0x135c/0x5520 03240 btree_interior_update_work+0x1248/0x1c10 03240 Process_scheduled_works+0x53c/0xd90 03240 trabajador_thread+0x37 0/0x8c8 03240 kthread+0x258/0x2e8 03240 ret_from_fork+0x10/0x20 03240 Código: aa1303e0 d63f0020 a94363f7 17ffff8c (d4210000 ) 03240 ---[ seguimiento final 0000000000000000 ]--- 03240 Pánico del kernel - no se sincroniza: Ups - ERROR: Excepción fatal 03240 SMP: deteniendo las CPU secundarias 03241 SMP: no se pudieron detener las CPU secundarias 13,15 03241 Desplazamiento del kernel: deshabilitado 03241 CPU características: 0x00,00000003,80000008,4240500b 03241 Límite de memoria: ninguno 03241 ---[ fin del pánico del kernel - no se sincroniza: Ups - ERROR: excepción fatal ]--- 03246 ========= TIEMPO DE ESPERA FALLIDO copygc_torture_no_checksum en 7200

*Credits: N/A

CVSS Scores

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-07-30 CVE Reserved
2024-08-08 CVE Published
2024-08-13 EPSS Updated
2024-11-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/5d85f2ab79d5918a66539ebf046c099f7448db8d	2024-07-25
https://git.kernel.org/stable/c/339b84ab6b1d66900c27bd999271cb2ae40ce812	2024-06-21

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.9.11 Search vendor "Linux" for product "Linux Kernel" and version " < 6.9.11"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.10 Search vendor "Linux" for product "Linux Kernel" and version " < 6.10"		en		Affected