CVE-2023-53094
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
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: <process ctx>: <IRQ>: 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().
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4a8588a1cf867333187d9ff071e6fbdab587d194 | affected | git | 19a98d56dfedafb25652bdb9cd48a4e73ceba702 | Unavailable | None listed |
| 4a8588a1cf867333187d9ff071e6fbdab587d194 | affected | git | 90530e7214c8a04dcdde57502d93fa96af288c38 | Unavailable | None listed |
| 4a8588a1cf867333187d9ff071e6fbdab587d194 | affected | git | 954fc9931f0aabf272b5674cf468affdd88d3a36 | Unavailable | None listed |
| 4a8588a1cf867333187d9ff071e6fbdab587d194 | affected | git | 2a36b444cace9580380467fd1183bb5e85bcc80a | Unavailable | None listed |
| 4a8588a1cf867333187d9ff071e6fbdab587d194 | affected | git | 1be6f2b15f902c02e055ae0b419ca789200473c9 | Unavailable | None listed |
| 5716a781032693d0f812ed06528d98195e9df028 | affected | git | Unavailable | Unavailable | None listed |
| 0d5cb6e8b4b62d8efd1a470615894276341d6db9 | affected | git | Unavailable | Unavailable | None listed |
| 3.18.9 | affected | semver | 3.19 | Unavailable | None listed |
| 3.19.1 | affected | semver | 3.20 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.0 | Unavailable | None listed |
| 5.10.177 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.105 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.23 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.2.8 | unaffected | semver | Unavailable | 6.2.* | None listed |
| 6.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |