CVE-2023-52511: spi: sun6i: reduce DMA RX transfer width to single byte
Vulnerability summary
CVE-2023-52511 is a medium (CVSS 5.3) vulnerability in linux. EPSS estimates a 0.81% chance of exploitation in the next 30 days, higher than 57% of scored vulnerabilities.
Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5 · Related 5Timeline
- 02-03-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: spi: sun6i: reduce DMA RX transfer width to single byte Through empirical testing it has been determined that sometimes RX SPI transfers with DMA enabled return corrupted data. This is down to single or even multiple bytes lost during DMA transfer from SPI peripheral to memory. It seems the RX FIFO within the SPI peripheral can become confused when performing bus read accesses wider than a single byte to it during an active SPI transfer. This patch reduces the width of individual DMA read accesses to the RX FIFO to a single byte to mitigate that issue.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- NVDNIST5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS trend
Probability
0.81%
Chance of exploitation in the next 30 days
Percentile
57%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.81% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu115 products
- linuxAll versions (No fix recorded) | < 5.15.0-94.104
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1053.58
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 345980a3a5e5e1c99fc621e2ce878fb150ad2287, < ff05ed4ae214011464a0156f05cac1b0b46b5fbc | ≥ 345980a3a5e5e1c99fc621e2ce878fb150ad2287, < e15bb292b24630ee832bfc7fd616bd72c7682bbb | ≥ 345980a3a5e5e1c99fc621e2ce878fb150ad2287, < b3c21c9c7289692f4019f163c3b06d8bdf78b355 | ≥ 345980a3a5e5e1c99fc621e2ce878fb150ad2287, < 171f8a49f212e87a8b04087568e1b3d132e36a18 | 5.11
- linux_kernel< 5.15.134 | ≥ 5.16, < 6.1.56 | ≥ 6.2, < 6.5.6
Debian1 product
- linux< 6.1.64-1 | < 6.5.6-1
3 vendors · 118 products
