CVE-2024-42251

mm: page_ref: remove folio_try_get_rcu()

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:

mm: page_ref: remove folio_try_get_rcu()

The below bug was reported on a non-SMP kernel:

[ 275.267158][ T4335] ------------[ cut here ]------------
[ 275.267949][ T4335] kernel BUG at include/linux/page_ref.h:275!
[ 275.268526][ T4335] invalid opcode: 0000 [#1] KASAN PTI
[ 275.269001][ T4335] CPU: 0 PID: 4335 Comm: trinity-c3 Not tainted 6.7.0-rc4-00061-gefa7df3e3bb5 #1
[ 275.269787][ T4335] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 275.270679][ T4335] RIP: 0010:try_get_folio (include/linux/page_ref.h:275 (discriminator 3) mm/gup.c:79 (discriminator 3))
[ 275.272813][ T4335] RSP: 0018:ffffc90005dcf650 EFLAGS: 00010202
[ 275.273346][ T4335] RAX: 0000000000000246 RBX: ffffea00066e0000 RCX: 0000000000000000
[ 275.274032][ T4335] RDX: fffff94000cdc007 RSI: 0000000000000004 RDI: ffffea00066e0034
[ 275.274719][ T4335] RBP: ffffea00066e0000 R08: 0000000000000000 R09: fffff94000cdc006
[ 275.275404][ T4335] R10: ffffea00066e0037 R11: 0000000000000000 R12: 0000000000000136
[ 275.276106][ T4335] R13: ffffea00066e0034 R14: dffffc0000000000 R15: ffffea00066e0008
[ 275.276790][ T4335] FS: 00007fa2f9b61740(0000) GS:ffffffff89d0d000(0000) knlGS:0000000000000000
[ 275.277570][ T4335] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 275.278143][ T4335] CR2: 00007fa2f6c00000 CR3: 0000000134b04000 CR4: 00000000000406f0
[ 275.278833][ T4335] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 275.279521][ T4335] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 275.280201][ T4335] Call Trace:
[ 275.280499][ T4335] <TASK>
[ 275.280751][ T4335] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447)
[ 275.281087][ T4335] ? do_trap (arch/x86/kernel/traps.c:112 arch/x86/kernel/traps.c:153)
[ 275.281463][ T4335] ? try_get_folio (include/linux/page_ref.h:275 (discriminator 3) mm/gup.c:79 (discriminator 3))
[ 275.281884][ T4335] ? try_get_folio (include/linux/page_ref.h:275 (discriminator 3) mm/gup.c:79 (discriminator 3))
[ 275.282300][ T4335] ? do_error_trap (arch/x86/kernel/traps.c:174)
[ 275.282711][ T4335] ? try_get_folio (include/linux/page_ref.h:275 (discriminator 3) mm/gup.c:79 (discriminator 3))
[ 275.283129][ T4335] ? handle_invalid_op (arch/x86/kernel/traps.c:212)
[ 275.283561][ T4335] ? try_get_folio (include/linux/page_ref.h:275 (discriminator 3) mm/gup.c:79 (discriminator 3))
[ 275.283990][ T4335] ? exc_invalid_op (arch/x86/kernel/traps.c:264)
[ 275.284415][ T4335] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:568)
[ 275.284859][ T4335] ? try_get_folio (include/linux/page_ref.h:275 (discriminator 3) mm/gup.c:79 (discriminator 3))
[ 275.285278][ T4335] try_grab_folio (mm/gup.c:148)
[ 275.285684][ T4335] __get_user_pages (mm/gup.c:1297 (discriminator 1))
[ 275.286111][ T4335] ? __pfx___get_user_pages (mm/gup.c:1188)
[ 275.286579][ T4335] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825)
[ 275.287034][ T4335] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 1))
[ 275.287416][ T4335] __gup_longterm_locked (mm/gup.c:1509 mm/gup.c:2209)
[ 275.288192][ T4335] ? __pfx___gup_longterm_locked (mm/gup.c:2204)
[ 275.288697][ T4335] ? __pfx_lock_acquire (kernel/locking/lockdep.c:5722)
[ 275.289135][ T4335] ? __pfx___might_resched (kernel/sched/core.c:10106)
[ 275.289595][ T4335] pin_user_pages_remote (mm/gup.c:3350)
[ 275.290041][ T4335] ? __pfx_pin_user_pages_remote (mm/gup.c:3350)
[ 275.290545][ T4335] ? find_held_lock (kernel/locking/lockdep.c:5244 (discriminator 1))
[ 275.290961][ T4335] ? mm_access (kernel/fork.c:1573)
[ 275.291353][ T4335] process_vm_rw_single_vec+0x142/0x360
[ 275.291900][ T4335] ? __pfx_process_vm_rw_single_vec+0x10/0x10
[ 275.292471][ T4335] ? mm_access (kernel/fork.c:1573)
[ 275.292859][ T4335] process_vm_rw_core+0x272/0x4e0
[ 275.293384][ T4335] ? hlock_class (a
---truncated---

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: mm: page_ref: remove folio_try_get_rcu() El siguiente error se informó en un kernel que no es SMP: [ 275.267158][ T4335] ------------ [cortar aquí]------------ [275.267949][T4335] ¡ERROR del kernel en include/linux/page_ref.h:275! [ 275.268526][ T4335] código de operación no válido: 0000 [#1] KASAN PTI [ 275.269001][ T4335] CPU: 0 PID: 4335 Comm: trinity-c3 No contaminado 6.7.0-rc4-00061-gefa7df3e3bb5 #1 [ 275.269787][ T4335] Nombre de hardware: PC estándar QEMU (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 01/04/2014 [ 275.270679][ T4335] RIP: 0010:try_get_folio (include/linux/page_ref .h:275 (discriminador 3) mm/gup.c:79 (discriminador 3)) [ 275.272813][ T4335] RSP: 0018:ffffc90005dcf650 EFLAGS: 00010202 [ 275.273346][ T4335] RAX: 00000000000000246 RBX: ffffea00066e0000 RCX: 0000000000000000 [ 275.274032][T4335] RDX: fffff94000cdc007 RSI: 0000000000000004 RDI: ffffea00066e0034 [ 275.274719][ T4335] RBP: ffffea00066e0000 R08: 000000 R09: fffff94000cdc006 [ 275.275404][ T4335] R10: ffffea00066e0037 R11: 00000000000000000 R12: 0000000000000136 [ 275.276106][ T4335] R13: ffffea00066e0034 R14: dffffc0000000000 R15: ffffea00066e0008 [ 275.276790][ T4335] FS: 00007fa2f9b61740(0000) GS:ffffffff89d0d000(0000) 0000000000000000 [ 275.277570][ T4335] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 275.278143 ][ T4335] CR2: 00007fa2f6c00000 CR3: 0000000134b04000 CR4: 00000000000406f0 [ 275.278833][ T4335] DR0: 0000000000000000 DR1: 000 DR2: 0000000000000000 [ 275.279521][ T4335] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 00000000000000400 [ 275.280201][ T4335] Llamada Seguimiento: [ 275.280499][ T4335] [ 275.280751][ T4335] ? morir (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) [275.281087][T4335]? do_trap (arch/x86/kernel/traps.c:112 arch/x86/kernel/traps.c:153) [ 275.281463][ T4335] ? try_get_folio (include/linux/page_ref.h:275 (discriminador 3) mm/gup.c:79 (discriminador 3)) [ 275.281884][ T4335] ? try_get_folio (include/linux/page_ref.h:275 (discriminador 3) mm/gup.c:79 (discriminador 3)) [ 275.282300][ T4335] ? do_error_trap (arch/x86/kernel/traps.c:174) [275.282711][T4335]? try_get_folio (include/linux/page_ref.h:275 (discriminador 3) mm/gup.c:79 (discriminador 3)) [ 275.283129][ T4335] ? handle_invalid_op (arch/x86/kernel/traps.c:212) [275.283561][T4335]? try_get_folio (include/linux/page_ref.h:275 (discriminador 3) mm/gup.c:79 (discriminador 3)) [ 275.283990][ T4335] ? exc_invalid_op (arch/x86/kernel/traps.c:264) [275.284415][T4335]? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:568) [275.284859][T4335]? try_get_folio (include/linux/page_ref.h:275 (discriminador 3) mm/gup.c:79 (discriminador 3)) [ 275.285278][ T4335] try_grab_folio (mm/gup.c:148) [ 275.285684][ T4335] __get_user_pages (mm/gup.c:1297 (discriminador 1)) [275.286111][T4335] ? __pfx___get_user_pages (mm/gup.c:1188) [ 275.286579][ T4335] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [275.287034][T4335]? mark_lock (kernel/locking/lockdep.c:4656 (discriminador 1)) [ 275.287416][ T4335] __gup_longterm_locked (mm/gup.c:1509 mm/gup.c:2209) [ 275.288192][ T4335] ? __pfx___gup_longterm_locked (mm/gup.c:2204) [ 275.288697][ T4335] ? __pfx_lock_acquire (kernel/locking/lockdep.c:5722) [275.289135][T4335]? __pfx___might_resched (kernel/sched/core.c:10106) [ 275.289595][ T4335] pin_user_pages_remote (mm/gup.c:3350) [ 275.290041][ T4335] ? __pfx_pin_user_pages_remote (mm/gup.c:3350) [275.290545][T4335]? find_held_lock (kernel/locking/lockdep.c:5244 (discriminador 1)) [275.290961][T4335]? mm_access (kernel/fork.c:1573) [275.291353][ T4335] Process_vm_rw_single_vec+0x142/0x360 [275.291900][ T4335] ? __pfx_process_vm_rw_single_vec+0x10/0x10 [275.292471][T4335]? mm_access (kernel/fork.c:1573) [275.292859][ T4335] Process_vm_rw_core+0x272/0x4e0 [275.293384][ T4335] ? hlock_class (a ---truncado---

*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
2024-09-07 EPSS Updated
2024-09-11 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (4)

URL	Tag	Source
https://git.kernel.org/stable/c/57edfcfd3419b4799353d8cbd6ce49da075cfdbd	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/16380f52b72166d6a33b508cc2509716f436253f	2024-07-25
https://git.kernel.org/stable/c/e7db2762ea3e69f215b3ec4db666006deccc37b4	2024-07-25
https://git.kernel.org/stable/c/fa2690af573dfefb47ba6eef888797a64b6b5f3c	2024-07-04

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"				>= 6.6 < 6.6.42 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.6.42"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.6 < 6.9.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.9.11"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.6 < 6.10 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.10"		en		Affected