{"cve":"CVE-2023-52488","nvd":{"published":"2024-03-11T18:15:16.603","modified":"2026-06-17T06:42:50.550","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: sc16is7xx: convert from _raw_ to _noinc_ regmap functions for FIFO\n\nThe SC16IS7XX IC supports a burst mode to access the FIFOs where the\ninitial register address is sent ($00), followed by all the FIFO data\nwithout having to resend the register address each time. In this mode, the\nIC doesn't increment the register address for each R/W byte.\n\nThe regmap_raw_read() and regmap_raw_write() are functions which can\nperform IO over multiple registers. They are currently used to read/write\nfrom/to the FIFO, and although they operate correctly in this burst mode on\nthe SPI bus, they would corrupt the regmap cache if it was not disabled\nmanually. The reason is that when the R/W size is more than 1 byte, these\nfunctions assume that the register address is incremented and handle the\ncache accordingly.\n\nConvert FIFO R/W functions to use the regmap _noinc_ versions in order to\nremove the manual cache control which was a workaround when using the\n_raw_ versions. FIFO registers are properly declared as volatile so\ncache will not be used/updated for FIFO accesses.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/084c24e788d9cf29c55564de368bf5284f2bb5db","https://git.kernel.org/stable/c/416b10d2817c94db86829fb92ad43ce7d002c573","https://git.kernel.org/stable/c/4e37416e4ee1b1bc17364a68973e0c63be89e611","https://git.kernel.org/stable/c/aa7cb4787698add9367b19f7afc667662c9bdb23","https://git.kernel.org/stable/c/dbf4ab821804df071c8b566d9813083125e6d97b"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:46:54.846886191+00:00"},"epss":{"cve":"CVE-2023-52488","score":0.00289,"percentile":0.21515,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}