In the Linux kernel, the following vulnerability has been resolved:
spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers
In case a IRQ based transfer times out the bcm2835_spi_handle_err()
function is called. Since commit 1513ceee70f2 ("spi: bcm2835: Drop
dma_pending flag") the TX and RX DMA transfers are unconditionally
canceled, leading to NULL pointer derefs if ctlr->dma_tx or
ctlr->dma_rx are not set.
Fix the NULL pointer deref by checking that ctlr->dma_tx and
ctlr->dma_rx are valid pointers before accessing them.
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Affected Vendors & Products
References
History
Mon, 17 Mar 2025 09:15:00 +0000
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Weaknesses | CWE-476 | |
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Fri, 28 Feb 2025 14:00:00 +0000
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Wed, 26 Feb 2025 02:45:00 +0000
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Description | In the Linux kernel, the following vulnerability has been resolved: spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers In case a IRQ based transfer times out the bcm2835_spi_handle_err() function is called. Since commit 1513ceee70f2 ("spi: bcm2835: Drop dma_pending flag") the TX and RX DMA transfers are unconditionally canceled, leading to NULL pointer derefs if ctlr->dma_tx or ctlr->dma_rx are not set. Fix the NULL pointer deref by checking that ctlr->dma_tx and ctlr->dma_rx are valid pointers before accessing them. | |
Title | spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers | |
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Status: PUBLISHED
Assigner: Linux
Published: 2025-02-26T02:23:13.209Z
Updated: 2025-05-04T08:40:50.800Z
Reserved: 2025-02-26T02:21:30.410Z
Link: CVE-2022-49569

No data.

Status : Received
Published: 2025-02-26T07:01:32.607
Modified: 2025-02-26T07:01:32.607
Link: CVE-2022-49569
