{ "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-2025-22035", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-22035", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-04-16T14:11:53.958Z", "updatedAt": "2026-08-05T11:56:07.902Z", "importedAt": "2026-10-24T01:57:29.455Z", "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: Fix use-after-free in print_graph_function_flags during tracer switching", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix use-after-free in print_graph_function_flags during tracer switching\n\nKairui reported a UAF issue in print_graph_function_flags() during\nftrace stress testing [1]. This issue can be reproduced if puting a\n'mdelay(10)' after 'mutex_unlock(&trace_types_lock)' in s_start(),\nand executing the following script:\n\n $ echo function_graph > current_tracer\n $ cat trace > /dev/null &\n $ sleep 5 # Ensure the 'cat' reaches the 'mdelay(10)' point\n $ echo timerlat > current_tracer\n\nThe root cause lies in the two calls to print_graph_function_flags\nwithin print_trace_line during each s_show():\n\n * One through 'iter->trace->print_line()';\n * Another through 'event->funcs->trace()', which is hidden in\n print_trace_fmt() before print_trace_line returns.\n\nTracer switching only updates the former, while the latter continues\nto use the print_line function of the old tracer, which in the script\nabove is print_graph_function_flags.\n\nMoreover, when switching from the 'function_graph' tracer to the\n'timerlat' tracer, s_start only calls graph_trace_close of the\n'function_graph' tracer to free 'iter->private', but does not set\nit to NULL. This provides an opportunity for 'event->funcs->trace()'\nto use an invalid 'iter->private'.\n\nTo fix this issue, set 'iter->private' to NULL immediately after\nfreeing it in graph_trace_close(), ensuring that an invalid pointer\nis not passed to other tracers. Additionally, clean up the unnecessary\n'iter->private = NULL' during each 'cat trace' when using wakeup and\nirqsoff tracers.\n\n [1] https://lore.kernel.org/all/20231112150030.84609-1-ryncsn@gmail.com/", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "05319d707732c728eb721ac616a50e7978eb499a", "status": "affected", "versionType": "git", "lessThan": "42561fe62c3628ea3bc9623f64f047605e98857f" }, { "version": "b8205dfed68183dc1470e83863c5ded6d7fa30a9", "status": "affected", "versionType": "git", "lessThan": "de7b309139f862a44379ecd96e93c9133c69f813" }, { "version": "ce6e2b14bc094866d9173db6935da2d752f06d8b", "status": "affected", "versionType": "git", "lessThan": "81a85b12132c8ffe98f5ddbdc185481790aeaa1b" }, { "version": "2cb0c037c927db4ec928cc927488e52aa359786e", "status": "affected", "versionType": "git", "lessThan": "a2cce54c1748216535dda02e185d07a084be837e" }, { "version": "eecb91b9f98d6427d4af5fdb8f108f52572a39e7", "status": "affected", "versionType": "git", "lessThan": "099ef3385800828b74933a96c117574637c3fb3a" }, { "version": "eecb91b9f98d6427d4af5fdb8f108f52572a39e7", "status": "affected", "versionType": "git", "lessThan": "c85efe6e13743cac6ba4ccf144cb91f44c86231a" }, { "version": "eecb91b9f98d6427d4af5fdb8f108f52572a39e7", "status": "affected", "versionType": "git", "lessThan": "f14752d66056d0c7bffe5092130409417d3baa70" }, { "version": "eecb91b9f98d6427d4af5fdb8f108f52572a39e7", "status": "affected", "versionType": "git", "lessThan": "70be951bc01e4a0e10d443f3510bb17426f257fb" }, { "version": "eecb91b9f98d6427d4af5fdb8f108f52572a39e7", "status": "affected", "versionType": "git", "lessThan": "7f81f27b1093e4895e87b74143c59c055c3b1906" }, { "version": "d6b35c9a8d51032ed9890431da3ae39fe76c1ae3", "status": "affected", "versionType": "git" }, { "version": "5d433eda76b66ab271f5924b26ddfec063eeb454", "status": "affected", "versionType": "git" }, { "version": "2242640e9bd94e706acf75c60a2ab1d0e150e0fb", "status": "affected", "versionType": "git" }, { "version": "5.4.255", "status": "affected", "versionType": "semver", "lessThan": "5.4.292" }, { "version": "5.10.193", "status": "affected", "versionType": "semver", "lessThan": "5.10.236" }, { "version": "5.15.129", "status": "affected", "versionType": "semver", "lessThan": "5.15.180" }, { "version": "6.1.50", "status": "affected", "versionType": "semver", "lessThan": "6.1.134" }, { "version": "4.14.324", "status": "affected", "versionType": "semver", "lessThan": "4.15" }, { "version": "4.19.293", "status": "affected", "versionType": "semver", "lessThan": "4.20" }, { "version": "6.4.13", "status": "affected", "versionType": "semver", "lessThan": "6.5" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.5", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.5" }, { "version": "5.4.292", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.236", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.180", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.134", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.87", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.23", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.13.11", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.13.*" }, { "version": "6.14.2", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.14.*" }, { "version": "6.15", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }