CVE-2023-52488

Advisory lineage Upstream: 0 Downstream: 37
Analyzed
Published: 29 Feb 2024, 15:52
Last modified:11 May 2026, 19:28

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

29 Feb 2024, 15:52
Published
Vulnerability first disclosed
11 May 2026, 19:28
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: serial: sc16is7xx: convert from _raw_ to _noinc_ regmap functions for FIFO The SC16IS7XX IC supports a burst mode to access the FIFOs where the initial register address is sent ($00), followed by all the FIFO data without having to resend the register address each time. In this mode, the IC doesn't increment the register address for each R/W byte. The regmap_raw_read() and regmap_raw_write() are functions which can perform IO over multiple registers. They are currently used to read/write from/to the FIFO, and although they operate correctly in this burst mode on the SPI bus, they would corrupt the regmap cache if it was not disabled manually. The reason is that when the R/W size is more than 1 byte, these functions assume that the register address is incremented and handle the cache accordingly. Convert FIFO R/W functions to use the regmap _noinc_ versions in order to remove the manual cache control which was a workaround when using the _raw_ versions. FIFO registers are properly declared as volatile so cache will not be used/updated for FIFO accesses.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 6%

Affected Systems

  • linux•linux

    ≥ dfeae619d781dee61666d5551b93ba3be755a86b, < 4e37416e4ee1b1bc17364a68973e0c63be89e611 | ≥ dfeae619d781dee61666d5551b93ba3be755a86b, < e635f652696ef6f1230621cfd89c350cb5ec6169 | ≥ dfeae619d781dee61666d5551b93ba3be755a86b, < 416b10d2817c94db86829fb92ad43ce7d002c573 | ≥ dfeae619d781dee61666d5551b93ba3be755a86b, < 084c24e788d9cf29c55564de368bf5284f2bb5db | ≥ dfeae619d781dee61666d5551b93ba3be755a86b, < aa7cb4787698add9367b19f7afc667662c9bdb23 | ≥ dfeae619d781dee61666d5551b93ba3be755a86b, < dbf4ab821804df071c8b566d9813083125e6d97b | 3.16

  • linux•linux_kernel

    ≥ 3.16, < 6.1.76 | ≥ 6.2, < 6.6.15 | ≥ 6.7, < 6.7.3

References (7)