CVE-2024-35907
mlxbf_gige: call request_irq() after NAPI initialized
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
mlxbf_gige: call request_irq() after NAPI initialized
The mlxbf_gige driver encounters a NULL pointer exception in
mlxbf_gige_open() when kdump is enabled. The sequence to reproduce
the exception is as follows:
a) enable kdump
b) trigger kdump via "echo c > /proc/sysrq-trigger"
c) kdump kernel executes
d) kdump kernel loads mlxbf_gige module
e) the mlxbf_gige module runs its open() as the
the "oob_net0" interface is brought up
f) mlxbf_gige module will experience an exception
during its open(), something like:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
Mem abort info:
ESR = 0x0000000086000004
EC = 0x21: IABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x04: level 0 translation fault
user pgtable: 4k pages, 48-bit VAs, pgdp=00000000e29a4000
[0000000000000000] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000086000004 [#1] SMP
CPU: 0 PID: 812 Comm: NetworkManager Tainted: G OE 5.15.0-1035-bluefield #37-Ubuntu
Hardware name: https://www.mellanox.com BlueField-3 SmartNIC Main Card/BlueField-3 SmartNIC Main Card, BIOS 4.6.0.13024 Jan 19 2024
pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : 0x0
lr : __napi_poll+0x40/0x230
sp : ffff800008003e00
x29: ffff800008003e00 x28: 0000000000000000 x27: 00000000ffffffff
x26: ffff000066027238 x25: ffff00007cedec00 x24: ffff800008003ec8
x23: 000000000000012c x22: ffff800008003eb7 x21: 0000000000000000
x20: 0000000000000001 x19: ffff000066027238 x18: 0000000000000000
x17: ffff578fcb450000 x16: ffffa870b083c7c0 x15: 0000aaab010441d0
x14: 0000000000000001 x13: 00726f7272655f65 x12: 6769675f6662786c
x11: 0000000000000000 x10: 0000000000000000 x9 : ffffa870b0842398
x8 : 0000000000000004 x7 : fe5a48b9069706ea x6 : 17fdb11fc84ae0d2
x5 : d94a82549d594f35 x4 : 0000000000000000 x3 : 0000000000400100
x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000066027238
Call trace:
0x0
net_rx_action+0x178/0x360
__do_softirq+0x15c/0x428
__irq_exit_rcu+0xac/0xec
irq_exit+0x18/0x2c
handle_domain_irq+0x6c/0xa0
gic_handle_irq+0xec/0x1b0
call_on_irq_stack+0x20/0x2c
do_interrupt_handler+0x5c/0x70
el1_interrupt+0x30/0x50
el1h_64_irq_handler+0x18/0x2c
el1h_64_irq+0x7c/0x80
__setup_irq+0x4c0/0x950
request_threaded_irq+0xf4/0x1bc
mlxbf_gige_request_irqs+0x68/0x110 [mlxbf_gige]
mlxbf_gige_open+0x5c/0x170 [mlxbf_gige]
__dev_open+0x100/0x220
__dev_change_flags+0x16c/0x1f0
dev_change_flags+0x2c/0x70
do_setlink+0x220/0xa40
__rtnl_newlink+0x56c/0x8a0
rtnl_newlink+0x58/0x84
rtnetlink_rcv_msg+0x138/0x3c4
netlink_rcv_skb+0x64/0x130
rtnetlink_rcv+0x20/0x30
netlink_unicast+0x2ec/0x360
netlink_sendmsg+0x278/0x490
__sock_sendmsg+0x5c/0x6c
____sys_sendmsg+0x290/0x2d4
___sys_sendmsg+0x84/0xd0
__sys_sendmsg+0x70/0xd0
__arm64_sys_sendmsg+0x2c/0x40
invoke_syscall+0x78/0x100
el0_svc_common.constprop.0+0x54/0x184
do_el0_svc+0x30/0xac
el0_svc+0x48/0x160
el0t_64_sync_handler+0xa4/0x12c
el0t_64_sync+0x1a4/0x1a8
Code: bad PC value
---[ end trace 7d1c3f3bf9d81885 ]---
Kernel panic - not syncing: Oops: Fatal exception in interrupt
Kernel Offset: 0x2870a7a00000 from 0xffff800008000000
PHYS_OFFSET: 0x80000000
CPU features: 0x0,000005c1,a3332a5a
Memory Limit: none
---[ end Kernel panic - not syncing: Oops: Fatal exception in interrupt ]---
The exception happens because there is a pending RX interrupt before the
call to request_irq(RX IRQ) executes. Then, the RX IRQ handler fires
immediately after this request_irq() completes. The
---truncated---
En el kernel de Linux, se resolvió la siguiente vulnerabilidad: mlxbf_gige: llame a request_irq() después de inicializar NAPI. El controlador mlxbf_gige encuentra una excepción de puntero NULL en mlxbf_gige_open() cuando kdump está habilitado. La secuencia para reproducir la excepción es la siguiente: a) habilitar kdump b) activar kdump mediante "echo c > /proc/sysrq-trigger" c) el kernel de kdump se ejecuta d) el kernel de kdump carga el módulo mlxbf_gige e) el módulo mlxbf_gige se ejecuta en abierto () cuando se abre la interfaz "oob_net0" f) El módulo mlxbf_gige experimentará una excepción durante su apertura(), algo así como: No se puede manejar la desreferencia del puntero NULL del kernel en la dirección virtual 0000000000000000 Información de cancelación de memoria: ESR = 0x0000000086000004 EC = 0x21 : IABT (EL actual), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: tabla de usuario de error de traducción de nivel 0: 4k páginas, VA de 48 bits, pgdp=00000000e29a4000 [00000000000000000] pgd=0000000000000000, p4d=00000000000000000 Error interno: Vaya: 0000000086000004 [#1] CPU SMP: 0 PID: 812 Comunicaciones: NetworkManager contaminado: G OE 5.15.0-1035-bluefield #37-Ubuntu Nombre de hardware: https ://www .mellanox.com Tarjeta principal BlueField-3 SmartNIC/Tarjeta principal BlueField-3 SmartNIC, BIOS 4.6.0.13024 19 de enero de 2024 pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc: 0x0 lr : __napi_poll+0x40/0x230 sp : ffff800008003e00 x29: ffff800008003e00 x28: 0000000000000000 x27: 00000000ffffffff x26: ffff000066027238 x25: 7cedec00 x24: ffff800008003ec8 x23: 000000000000012c x22: ffff800008003eb7 x21: 00000000000000000 x20: 0000000000000001 x19: ffff000066027238 x 18: 0000000000000000 x17: ffff578fcb450000 x16: ffffa870b083c7c0 x15: 0000aaab010441d0 x14: 0000000000000001 x13: 00726f7272655f65 x12: 6769675f6662786c x11: 0000000000000000 x10: 0000000000000000 x9: ffffa870b0842398 x8: 0000000000000004 x7: fe5a48b9069706ea x6: 17fdb11fc84ae0d2 x5: d94a82549d594f35 x4: 00000000000000 000 x3: 0000000000400100 x2: 0000000000000000 x1: 0000000000000000 x0: ffff000066027238 Llamar seguimiento: 0x0 net_rx_action+0x178/0x360 __do_softirq+0x15c/0x428 __irq_exit_rcu+0xac/0xec irq_exit+0x18/0x2c handle_domain_irq+0x6c/0xa0 gic_handle_irq+0xec/0x1b0 call_on_irq_stack+0x2 0/0x2c do_interrupt_handler+0x5c/0x70 el1_interrupt+0x30/0x50 el1h_64_irq_handler+ 0x18/0x2c el1h_64_irq+0x7c/0x80 __setup_irq+0x4c0/0x950 request_threaded_irq+0xf4/0x1bc mlxbf_gige_request_irqs+0x68/0x110 [mlxbf_gige] mlxbf_gige_open+0x5c/0x170 bf_gige] __dev_open+0x100/0x220 __dev_change_flags+0x16c/0x1f0 dev_change_flags+0x2c/0x70 do_setlink +0x220/0xa40 __rtnl_newlink+0x56c/0x8a0 rtnl_newlink+0x58/0x84 rtnetlink_rcv_msg+0x138/0x3c4 netlink_rcv_skb+0x64/0x130 rtnetlink_rcv+0x20/0x30 netlink_unicast+0x2ec/0x360 netlink_sendmsg+0x278/0x490 __sock_sendmsg+0x5c/0x6c ____sys_sendmsg+0x290/0x2d4 ___sys_sendmsg +0x84/0xd0 __sys_sendmsg+0x70/0xd0 __arm64_sys_sendmsg+0x2c/0x40 invoke_syscall+0x78/0x100 el0_svc_common.constprop.0+0x54/0x184 do_el0_svc+0x30/0xac c+0x48/0x160 el0t_64_sync_handler+0xa4/0x12c el0t_64_sync+0x1a4/0x1a8 Código: valor incorrecto de la PC ---[ seguimiento final 7d1c3f3bf9d81885 ]--- Pánico del kernel - no se sincroniza: Vaya: excepción grave en la interrupción Compensación del kernel: 0x2870a7a00000 de 0xffff800008000000 PHYS_OFFSET: 0x80000000 Características de la CPU: 0x0,000005c1,a33 32a5a Límite de memoria: ninguno --- [fin del pánico del kernel - no se sincroniza: Ups: excepción fatal en la interrupción]--- La excepción ocurre porque hay una interrupción RX pendiente antes de que se ejecute la llamada a request_irq(RX IRQ). Luego, el controlador RX IRQ se activa inmediatamente después de que se completa request_irq(). El ---truncado---
CVE-2024-35907 is a vulnerability in the Linux kernel's mlxbf_gige driver, which supports Mellanox BlueField devices. The issue occurs during kdump operations when a receive (RX) interrupt is triggered before the driver fully initializes. This leads to a race condition that can result in a NULL pointer dereference, causing the system to crash.
A pending RX interrupt before the driver requests the IRQ can lead to an improper sequence of operations, resulting in the crash.
This flaw affects system stability during kdump operations, potentially causing kernel panics.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-05-17 CVE Reserved
- 2024-05-19 CVE Published
- 2024-05-20 EPSS Updated
- 2024-12-19 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (8)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/f92e1869d74e1acc6551256eb084a1c14a054e19 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2024-35907 | 2024-08-14 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2281647 | 2024-08-14 |
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" | >= 5.14 < 5.15.154 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.14 < 5.15.154" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.14 < 6.1.85 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.14 < 6.1.85" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.14 < 6.6.26 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.14 < 6.6.26" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.14 < 6.8.5 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.14 < 6.8.5" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.14 < 6.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.14 < 6.9" | en |
Affected
| ||||||