{"cve":"CVE-2023-52598","nvd":{"published":"2024-03-06T07:15:09.990","modified":"2026-06-17T06:43:07.137","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/ptrace: handle setting of fpc register correctly\n\nIf the content of the floating point control (fpc) register of a traced\nprocess is modified with the ptrace interface the new value is tested for\nvalidity by temporarily loading it into the fpc register.\n\nThis may lead to corruption of the fpc register of the tracing process:\nif an interrupt happens while the value is temporarily loaded into the\nfpc register, and within interrupt context floating point or vector\nregisters are used, the current fp/vx registers are saved with\nsave_fpu_regs() assuming they belong to user space and will be loaded into\nfp/vx registers when returning to user space.\n\ntest_fp_ctl() restores the original user space fpc register value, however\nit will be discarded, when returning to user space.\n\nIn result the tracer will incorrectly continue to run with the value that\nwas supposed to be used for the traced process.\n\nFix this by saving fpu register contents with save_fpu_regs() before using\ntest_fp_ctl().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":7.1},"cwes":["CWE-125"],"references":["https://git.kernel.org/stable/c/02c6bbfb08bad78dd014e24c7b893723c15ec7a1","https://git.kernel.org/stable/c/28a1f492cb527f64593457a0a0f0d809b3f36c25","https://git.kernel.org/stable/c/6ccf904aac0292e1f6b1a1be6c407c414f7cf713","https://git.kernel.org/stable/c/6d0822f2cc9b153bf2df49a84599195a2e0d21a8","https://git.kernel.org/stable/c/7a4d6481fbdd661f9e40e95febb95e3dee82bad3"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:46:54.846886191+00:00"},"epss":{"cve":"CVE-2023-52598","score":0.00242,"percentile":0.15423,"date":"2026-10-31"},"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."]}