CVE - CVE-2022-49320

CVE-ID
CVE-2022-49320	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: zynqmp_dma: In struct zynqmp_dma_chan fix desc_size data type In zynqmp_dma_alloc/free_chan_resources functions there is a potential overflow in the below expressions. dma_alloc_coherent(chan->dev, (2 * chan->desc_size * ZYNQMP_DMA_NUM_DESCS), &chan->desc_pool_p, GFP_KERNEL); dma_free_coherent(chan->dev,(2 * ZYNQMP_DMA_DESC_SIZE(chan) * ZYNQMP_DMA_NUM_DESCS), chan->desc_pool_v, chan->desc_pool_p); The arguments desc_size and ZYNQMP_DMA_NUM_DESCS were 32 bit. Though this overflow condition is not observed but it is a potential problem in the case of 32-bit multiplication. Hence fix it by changing the desc_size data type to size_t. In addition to coverity fix it also reuse ZYNQMP_DMA_DESC_SIZE macro in dma_alloc_coherent API argument. Addresses-Coverity: Event overflow_before_widen.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/4838969e4d95d2bd2995d1605b20d3144fcb3e74 URL:https://git.kernel.org/stable/c/4838969e4d95d2bd2995d1605b20d3144fcb3e74 MISC:https://git.kernel.org/stable/c/7b5488f4721fed6e121e661e165bab06ae2f8675 URL:https://git.kernel.org/stable/c/7b5488f4721fed6e121e661e165bab06ae2f8675 MISC:https://git.kernel.org/stable/c/83960276ffc9bf5570d4106490346b61e61be5f3 URL:https://git.kernel.org/stable/c/83960276ffc9bf5570d4106490346b61e61be5f3 MISC:https://git.kernel.org/stable/c/90aefae2e3a770a6909d339f5d8a988c0b0ceaf0 URL:https://git.kernel.org/stable/c/90aefae2e3a770a6909d339f5d8a988c0b0ceaf0 MISC:https://git.kernel.org/stable/c/95a0ba85c1b51b36e909841c02d205cd223ab753 URL:https://git.kernel.org/stable/c/95a0ba85c1b51b36e909841c02d205cd223ab753 MISC:https://git.kernel.org/stable/c/f9a9f43a62a04ec3183fb0da9226c7706eed0115 URL:https://git.kernel.org/stable/c/f9a9f43a62a04ec3183fb0da9226c7706eed0115
Assigning CNA
kernel.org
Date Record Created
20250226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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