CVE-2023-53094
published 2025-05-02CVE-2023-53094: In the Linux kernel, the following vulnerability has been resolved: tty: serial: fsl_lpuart: fix race on RX DMA shutdown From time to time DMA completion can…
PriorityP415medium4.7CVSS 3.1
AVLACHPRLUINSUCNINAH
EPSS
0.14%
4.2th percentile
In the Linux kernel, the following vulnerability has been resolved:
tty: serial: fsl_lpuart: fix race on RX DMA shutdown
From time to time DMA completion can come in the middle of DMA shutdown:
: :
lpuart32_shutdown()
lpuart_dma_shutdown()
del_timer_sync()
lpuart_dma_rx_complete()
lpuart_copy_rx_to_tty()
mod_timer()
lpuart_dma_rx_free()
When the timer fires a bit later, sport->dma_rx_desc is NULL:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004
pc : lpuart_copy_rx_to_tty+0xcc/0x5bc
lr : lpuart_timer_func+0x1c/0x2c
Call trace:
lpuart_copy_rx_to_tty
lpuart_timer_func
call_timer_fn
__run_timers.part.0
run_timer_softirq
__do_softirq
__irq_exit_rcu
irq_exit
handle_domain_irq
gic_handle_irq
call_on_irq_stack
do_interrupt_handler
...
To fix this fold del_timer_sync() into lpuart_dma_rx_free() after
dmaengine_terminate_sync() to make sure timer will not be re-started in
lpuart_copy_rx_to_tty() <= lpuart_dma_rx_complete().
Affected
22 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.25-1 (bookworm) | linux 6.1.25-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 3.18.9 < 3.19 | 3.19 |
| linux | linux | >= 3.19.1 < 3.20 | 3.20 |
| linux | linux | >= 4a8588a1cf867333187d9ff071e6fbdab587d194 < 19a98d56dfedafb25652bdb9cd48a4e73ceba702 | 19a98d56dfedafb25652bdb9cd48a4e73ceba702 |
| linux | linux | >= 4a8588a1cf867333187d9ff071e6fbdab587d194 < 90530e7214c8a04dcdde57502d93fa96af288c38 | 90530e7214c8a04dcdde57502d93fa96af288c38 |
| linux | linux | >= 4a8588a1cf867333187d9ff071e6fbdab587d194 < 954fc9931f0aabf272b5674cf468affdd88d3a36 | 954fc9931f0aabf272b5674cf468affdd88d3a36 |
| linux | linux | >= 4a8588a1cf867333187d9ff071e6fbdab587d194 < 2a36b444cace9580380467fd1183bb5e85bcc80a | 2a36b444cace9580380467fd1183bb5e85bcc80a |
| linux | linux | >= 4a8588a1cf867333187d9ff071e6fbdab587d194 < 1be6f2b15f902c02e055ae0b419ca789200473c9 | 1be6f2b15f902c02e055ae0b419ca789200473c9 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.178-1 | 5.10.178-1 |
| linux | linux_kernel | >= 0 < 6.1.25-1 | 6.1.25-1 |
| linux | linux_kernel | >= 0 < 6.1.25-1 | 6.1.25-1 |
| linux | linux_kernel | >= 0 < 6.1.25-1 | 6.1.25-1 |
| linux | linux_kernel | >= 3.18.9 < 3.19 | 3.19 |
| linux | linux_kernel | >= 3.19.1 < 5.10.177 | 5.10.177 |
| linux | linux_kernel | >= 5.11 < 5.15.105 | 5.15.105 |
| linux | linux_kernel | >= 5.16 < 6.1.23 | 6.1.23 |
| linux | linux_kernel | >= 6.2 < 6.2.8 | 6.2.8 |
CVSS provenance
nvdv3.14.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
osv4.7MEDIUM
vendor_debian4.7MEDIUM
vendor_redhat4.7MEDIUM
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Red Hat
kernel: tty: serial: fsl_lpuart: fix race on RX DMA shutdown
vendor_redhat·2025-05-02·CVSS 4.7
CVE-2023-53094 [MEDIUM] kernel: tty: serial: fsl_lpuart: fix race on RX DMA shutdown
kernel: tty: serial: fsl_lpuart: fix race on RX DMA shutdown
In the Linux kernel, the following vulnerability has been resolved:
tty: serial: fsl_lpuart: fix race on RX DMA shutdown
From time to time DMA completion can come in the middle of DMA shutdown:
::
lpuart32_shutdown()
lpuart_dma_shutdown()
del_timer_sync()
lpuart_dma_rx_complete()
lpuart_copy_rx_to_tty()
mod_timer()
lpuart_dma_rx_free()
When the timer fires a bit later, sport->dma_rx_desc is NULL:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004
pc : lpuart_copy_rx_to_tty+0xcc/0x5bc
lr : lpuart_timer_func+0x1c/0x2c
Call trace:
lpuart_copy_rx_to_tty
lpuart_timer_func
call_timer_fn
__run_timers.part.0
run_timer_softirq
__do_softirq
__irq_exit_rcu
irq_exit
handle_domain_irq
gic_handle_irq
call_on_
Debian
CVE-2023-53094: linux - In the Linux kernel, the following vulnerability has been resolved: tty: serial...
vendor_debian·2023·CVSS 4.7
CVE-2023-53094 [MEDIUM] CVE-2023-53094: linux - In the Linux kernel, the following vulnerability has been resolved: tty: serial...
In the Linux kernel, the following vulnerability has been resolved: tty: serial: fsl_lpuart: fix race on RX DMA shutdown From time to time DMA completion can come in the middle of DMA shutdown: : : lpuart32_shutdown() lpuart_dma_shutdown() del_timer_sync() lpuart_dma_rx_complete() lpuart_copy_rx_to_tty() mod_timer() lpuart_dma_rx_free() When the timer fires a bit later, sport->dma_rx_desc is NULL: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004 pc : lpuart_copy_rx_to_tty+0xcc/0x5bc lr : lpuart_timer_func+0x1c/0x2c Call trace: lpuart_copy_rx_to_tty lpuart_timer_func call_timer_fn __run_timers.part.0 run_timer_softirq __do_softirq __irq_exit_rcu irq_exit handle_domain_irq gic_handle_irq call_on_irq_stack do_interrupt_handler ... To fix this fold del_timer
GHSA
GHSA-25vh-j698-43q9: In the Linux kernel, the following vulnerability has been resolved:
tty: serial: fsl_lpuart: fix race on RX DMA shutdown
From time to time DMA compl
ghsa_unreviewed·2025-05-02
CVE-2023-53094 [MEDIUM] CWE-362 GHSA-25vh-j698-43q9: In the Linux kernel, the following vulnerability has been resolved:
tty: serial: fsl_lpuart: fix race on RX DMA shutdown
From time to time DMA compl
In the Linux kernel, the following vulnerability has been resolved:
tty: serial: fsl_lpuart: fix race on RX DMA shutdown
From time to time DMA completion can come in the middle of DMA shutdown:
: :
lpuart32_shutdown()
lpuart_dma_shutdown()
del_timer_sync()
lpuart_dma_rx_complete()
lpuart_copy_rx_to_tty()
mod_timer()
lpuart_dma_rx_free()
When the timer fires a bit later, sport->dma_rx_desc is NULL:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004
pc : lpuart_copy_rx_to_tty+0xcc/0x5bc
lr : lpuart_timer_func+0x1c/0x2c
Call trace:
lpuart_copy_rx_to_tty
lpuart_timer_func
call_timer_fn
__run_timers.part.0
run_timer_softirq
__do_softirq
__irq_exit_rcu
irq_exit
handle_domain_irq
gic_handle_irq
call_on_irq_stack
do_interrupt_handler
...
To fix this fold del
OSV
CVE-2023-53094: In the Linux kernel, the following vulnerability has been resolved: tty: serial: fsl_lpuart: fix race on RX DMA shutdown From time to time DMA complet
osv·2025-05-02·CVSS 4.7
CVE-2023-53094 [MEDIUM] CVE-2023-53094: In the Linux kernel, the following vulnerability has been resolved: tty: serial: fsl_lpuart: fix race on RX DMA shutdown From time to time DMA complet
In the Linux kernel, the following vulnerability has been resolved: tty: serial: fsl_lpuart: fix race on RX DMA shutdown From time to time DMA completion can come in the middle of DMA shutdown: : : lpuart32_shutdown() lpuart_dma_shutdown() del_timer_sync() lpuart_dma_rx_complete() lpuart_copy_rx_to_tty() mod_timer() lpuart_dma_rx_free() When the timer fires a bit later, sport->dma_rx_desc is NULL: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004 pc : lpuart_copy_rx_to_tty+0xcc/0x5bc lr : lpuart_timer_func+0x1c/0x2c Call trace: lpuart_copy_rx_to_tty lpuart_timer_func call_timer_fn __run_timers.part.0 run_timer_softirq __do_softirq __irq_exit_rcu irq_exit handle_domain_irq gic_handle_irq call_on_irq_stack do_interrupt_handler ... To fix this fold del_timer
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/19a98d56dfedafb25652bdb9cd48a4e73ceba702https://git.kernel.org/stable/c/1be6f2b15f902c02e055ae0b419ca789200473c9https://git.kernel.org/stable/c/2a36b444cace9580380467fd1183bb5e85bcc80ahttps://git.kernel.org/stable/c/90530e7214c8a04dcdde57502d93fa96af288c38https://git.kernel.org/stable/c/954fc9931f0aabf272b5674cf468affdd88d3a36
2025-05-02
Published