{"cve":"CVE-2023-53214","nvd":{"published":"2025-09-15T15:15:48.027","modified":"2026-08-04T10:18:58.113","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid potential memory corruption in __update_iostat_latency()\n\nAdd iotype sanity check to avoid potential memory corruption.\nThis is to fix the compile error below:\n\nfs/f2fs/iostat.c:231 __update_iostat_latency() error: buffer overflow\n'io_lat->peak_lat[type]' 3 <= 3\n\nvim +228 fs/f2fs/iostat.c\n\n  211  static inline void __update_iostat_latency(struct bio_iostat_ctx\n\t*iostat_ctx,\n  212\t\t\t\t\tenum iostat_lat_type type)\n  213  {\n  214\t\tunsigned long ts_diff;\n  215\t\tunsigned int page_type = iostat_ctx->type;\n  216\t\tstruct f2fs_sb_info *sbi = iostat_ctx->sbi;\n  217\t\tstruct iostat_lat_info *io_lat = sbi->iostat_io_lat;\n  218\t\tunsigned long flags;\n  219\n  220\t\tif (!sbi->iostat_enable)\n  221\t\t\treturn;\n  222\n  223\t\tts_diff = jiffies - iostat_ctx->submit_ts;\n  224\t\tif (page_type >= META_FLUSH)\n                                 ^^^^^^^^^^\n\n  225\t\t\tpage_type = META;\n  226\n  227\t\tspin_lock_irqsave(&sbi->iostat_lat_lock, flags);\n @228\t\tio_lat->sum_lat[type][page_type] += ts_diff;\n                                      ^^^^^^^^^\nMixup between META_FLUSH and NR_PAGE_TYPE leads to memory corruption.","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:H/A:H","score":7.8},"cwes":["CWE-787"],"references":["https://git.kernel.org/stable/c/0dbbf0fb38d5ec5d4138d1aeaeb43d9217b9a592","https://git.kernel.org/stable/c/20b4f3de0f3932f71b4a8daf0671e517a8d98022","https://git.kernel.org/stable/c/22ddbbff116ee7dce5431feb1c0f36a507d2d68d","https://git.kernel.org/stable/c/aa4d726af72a21732ce120484e0b1240674a13b3"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:08:41.295252406+00:00"},"epss":{"cve":"CVE-2023-53214","score":0.00176,"percentile":0.07148,"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."]}