| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "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": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "kernel/trace/trace_functions_graph.c", |
| "kernel/trace/trace_irqsoff.c", |
| "kernel/trace/trace_sched_wakeup.c" |
| ], |
| "versions": [ |
| { |
| "version": "05319d707732c728eb721ac616a50e7978eb499a", |
| "lessThan": "42561fe62c3628ea3bc9623f64f047605e98857f", |
| "status": "affected", |
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| "status": "affected", |
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| "lessThan": "81a85b12132c8ffe98f5ddbdc185481790aeaa1b", |
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| "version": "2cb0c037c927db4ec928cc927488e52aa359786e", |
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| "version": "eecb91b9f98d6427d4af5fdb8f108f52572a39e7", |
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| "versionType": "git" |
| }, |
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| "version": "eecb91b9f98d6427d4af5fdb8f108f52572a39e7", |
| "lessThan": "70be951bc01e4a0e10d443f3510bb17426f257fb", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "eecb91b9f98d6427d4af5fdb8f108f52572a39e7", |
| "lessThan": "7f81f27b1093e4895e87b74143c59c055c3b1906", |
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| "versionType": "git" |
| }, |
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| "status": "affected", |
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| }, |
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| "version": "2242640e9bd94e706acf75c60a2ab1d0e150e0fb", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "kernel/trace/trace_functions_graph.c", |
| "kernel/trace/trace_irqsoff.c", |
| "kernel/trace/trace_sched_wakeup.c" |
| ], |
| "versions": [ |
| { |
| "version": "6.5", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "6.5", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.292", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.236", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.180", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.134", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.87", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12.23", |
| "lessThanOrEqual": "6.12.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.13.11", |
| "lessThanOrEqual": "6.13.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.14.2", |
| "lessThanOrEqual": "6.14.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.15", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "cpeApplicability": [ |
| { |
| "nodes": [ |
| { |
| "operator": "OR", |
| "negate": false, |
| "cpeMatch": [ |
| { |
| "vulnerable": true, |
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| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/42561fe62c3628ea3bc9623f64f047605e98857f" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/de7b309139f862a44379ecd96e93c9133c69f813" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/81a85b12132c8ffe98f5ddbdc185481790aeaa1b" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/a2cce54c1748216535dda02e185d07a084be837e" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/099ef3385800828b74933a96c117574637c3fb3a" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c85efe6e13743cac6ba4ccf144cb91f44c86231a" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/f14752d66056d0c7bffe5092130409417d3baa70" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/70be951bc01e4a0e10d443f3510bb17426f257fb" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/7f81f27b1093e4895e87b74143c59c055c3b1906" |
| } |
| ], |
| "title": "tracing: Fix use-after-free in print_graph_function_flags during tracer switching", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2025-22035", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
