{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2025-39683", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-39683", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-09-05T17:20:49.821Z", "updatedAt": "2026-10-15T22:02:30.066Z", "importedAt": "2026-10-24T01:57:34.152Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "tracing: Limit access to parser->buffer when trace_get_user failed", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Limit access to parser->buffer when trace_get_user failed\n\nWhen the length of the string written to set_ftrace_filter exceeds\nFTRACE_BUFF_MAX, the following KASAN alarm will be triggered:\n\nBUG: KASAN: slab-out-of-bounds in strsep+0x18c/0x1b0\nRead of size 1 at addr ffff0000d00bd5ba by task ash/165\n\nCPU: 1 UID: 0 PID: 165 Comm: ash Not tainted 6.16.0-g6bcdbd62bd56-dirty\nHardware name: linux,dummy-virt (DT)\nCall trace:\n show_stack+0x34/0x50 (C)\n dump_stack_lvl+0xa0/0x158\n print_address_description.constprop.0+0x88/0x398\n print_report+0xb0/0x280\n kasan_report+0xa4/0xf0\n __asan_report_load1_noabort+0x20/0x30\n strsep+0x18c/0x1b0\n ftrace_process_regex.isra.0+0x100/0x2d8\n ftrace_regex_release+0x484/0x618\n __fput+0x364/0xa58\n ____fput+0x28/0x40\n task_work_run+0x154/0x278\n do_notify_resume+0x1f0/0x220\n el0_svc+0xec/0xf0\n el0t_64_sync_handler+0xa0/0xe8\n el0t_64_sync+0x1ac/0x1b0\n\nThe reason is that trace_get_user will fail when processing a string\nlonger than FTRACE_BUFF_MAX, but not set the end of parser->buffer to 0.\nThen an OOB access will be triggered in ftrace_regex_release->\nftrace_process_regex->strsep->strpbrk. We can solve this problem by\nlimiting access to parser->buffer when trace_get_user failed.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "634684d79733124f7470b226b0f42aada4426b07", "status": "affected", "versionType": "git", "lessThan": "b842ef39c2ad6156c13afdec25ecc6792a9b67b9" }, { "version": "8c9af478c06bb1ab1422f90d8ecbc53defd44bc3", "status": "affected", "versionType": "git", "lessThan": "41b838420457802f21918df66764b6fbf829d330" }, { "version": "8c9af478c06bb1ab1422f90d8ecbc53defd44bc3", "status": "affected", "versionType": "git", "lessThan": "418b448e1d7470da9d4d4797f71782595ee69c49" }, { "version": "8c9af478c06bb1ab1422f90d8ecbc53defd44bc3", "status": "affected", "versionType": "git", "lessThan": "58ff8064cb4c7eddac4da1a59da039ead586950a" }, { "version": "8c9af478c06bb1ab1422f90d8ecbc53defd44bc3", "status": "affected", "versionType": "git", "lessThan": "d0c68045b8b0f3737ed7bd6b8c83b7887014adee" }, { "version": "8c9af478c06bb1ab1422f90d8ecbc53defd44bc3", "status": "affected", "versionType": "git", "lessThan": "3079517a5ba80901fe828a06998da64b9b8749be" }, { "version": "8c9af478c06bb1ab1422f90d8ecbc53defd44bc3", "status": "affected", "versionType": "git", "lessThan": "6a909ea83f226803ea0e718f6e88613df9234d58" }, { "version": "24cd31752f47699b89b4b3471155c8e599a1a23a", "status": "affected", "versionType": "git" }, { "version": "e9cb474de7ff7a970c2a3951c12ec7e3113c0c35", "status": "affected", "versionType": "git" }, { "version": "6ab671191f64b0da7d547e2ad4dc199ca7e5b558", "status": "affected", "versionType": "git" }, { "version": "3d9281a4ac7171c808f9507f0937eb236b353905", "status": "affected", "versionType": "git" }, { "version": "0b641b25870f02e2423e494365fc5243cc1e2759", "status": "affected", "versionType": "git" }, { "version": "ffd51dbfd2900e50c71b5c069fe407957e52d61f", "status": "affected", "versionType": "git" }, { "version": "cdd107d7f18158d966c2bc136204fe826dac445c", "status": "affected", "versionType": "git" }, { "version": "5.10.36", "status": "affected", "versionType": "semver", "lessThan": "5.10.241" }, { "version": "4.4.269", "status": "affected", "versionType": "semver", "lessThan": "4.5" }, { "version": "4.9.269", "status": "affected", "versionType": "semver", "lessThan": "4.10" }, { "version": "4.14.233", "status": "affected", "versionType": "semver", "lessThan": "4.15" }, { "version": "4.19.191", "status": "affected", "versionType": "semver", "lessThan": "4.20" }, { "version": "5.4.118", "status": "affected", "versionType": "semver", "lessThan": "5.5" }, { "version": "5.11.20", "status": "affected", "versionType": "semver", "lessThan": "5.12" }, { "version": "5.12.3", "status": "affected", "versionType": "semver", "lessThan": "5.13" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.13", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.13" }, { "version": "5.10.241", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.190", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.149", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.103", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.44", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.16.4", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.16.*" }, { "version": "6.17", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }