{"api_version":"1","generated_at":"2026-10-29T10:21:29+00:00","cve":"CVE-2025-40346","urls":{"html":"https://cve.report/CVE-2025-40346","api":"https://cve.report/api/cve/CVE-2025-40346.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2025-40346","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-40346"},"summary":{"title":"arch_topology: Fix incorrect error check in topology_parse_cpu_capacity()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\narch_topology: Fix incorrect error check in topology_parse_cpu_capacity()\n\nFix incorrect use of PTR_ERR_OR_ZERO() in topology_parse_cpu_capacity()\nwhich causes the code to proceed with NULL clock pointers. The current\nlogic uses !PTR_ERR_OR_ZERO(cpu_clk) which evaluates to true for both\nvalid pointers and NULL, leading to potential NULL pointer dereference\nin clk_get_rate().\n\nPer include/linux/err.h documentation, PTR_ERR_OR_ZERO(ptr) returns:\n\"The error code within @ptr if it is an error pointer; 0 otherwise.\"\n\nThis means PTR_ERR_OR_ZERO() returns 0 for both valid pointers AND NULL\npointers. Therefore !PTR_ERR_OR_ZERO(cpu_clk) evaluates to true (proceed)\nwhen cpu_clk is either valid or NULL, causing clk_get_rate(NULL) to be\ncalled when of_clk_get() returns NULL.\n\nReplace with !IS_ERR_OR_NULL(cpu_clk) which only proceeds for valid\npointers, preventing potential NULL pointer dereference in clk_get_rate().","state":"PUBLISHED","assigner":"Linux","published_at":"2025-12-16 14:15:46","updated_at":"2026-10-14 13:10:00"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/3373f263bb647fcc3b5237cfaef757633b9ee25e","name":"https://git.kernel.org/stable/c/3373f263bb647fcc3b5237cfaef757633b9ee25e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/45379303124487db3a81219af7565d41f498167f","name":"https://git.kernel.org/stable/c/45379303124487db3a81219af7565d41f498167f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/64da320252e43456cc9ec3055ff567f168467b37","name":"https://git.kernel.org/stable/c/64da320252e43456cc9ec3055ff567f168467b37","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a77f8434954cb1e9c42c3854e40855fdcf5ab235","name":"https://git.kernel.org/stable/c/a77f8434954cb1e9c42c3854e40855fdcf5ab235","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/02fbea0864fd4a863671f5d418129258d7159f68","name":"https://git.kernel.org/stable/c/02fbea0864fd4a863671f5d418129258d7159f68","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3a01b2614e84361aa222f67bc628593987e5cdb2","name":"https://git.kernel.org/stable/c/3a01b2614e84361aa222f67bc628593987e5cdb2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2eead19334516c8e9927c11b448fbe512b1f18a1","name":"https://git.kernel.org/stable/c/2eead19334516c8e9927c11b448fbe512b1f18a1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-40346","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-40346","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8fe128dad8f97cc9af7c55a264d1fc5ab677195 64da320252e43456cc9ec3055ff567f168467b37 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8fe128dad8f97cc9af7c55a264d1fc5ab677195 02fbea0864fd4a863671f5d418129258d7159f68 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8fe128dad8f97cc9af7c55a264d1fc5ab677195 a77f8434954cb1e9c42c3854e40855fdcf5ab235 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8fe128dad8f97cc9af7c55a264d1fc5ab677195 3373f263bb647fcc3b5237cfaef757633b9ee25e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8fe128dad8f97cc9af7c55a264d1fc5ab677195 45379303124487db3a81219af7565d41f498167f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8fe128dad8f97cc9af7c55a264d1fc5ab677195 3a01b2614e84361aa222f67bc628593987e5cdb2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8fe128dad8f97cc9af7c55a264d1fc5ab677195 2eead19334516c8e9927c11b448fbe512b1f18a1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.7","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.246 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.196 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.158 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.115 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.56 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.17.6 6.17.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/base/arch_topology.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"64da320252e43456cc9ec3055ff567f168467b37","status":"affected","version":"b8fe128dad8f97cc9af7c55a264d1fc5ab677195","versionType":"git"},{"lessThan":"02fbea0864fd4a863671f5d418129258d7159f68","status":"affected","version":"b8fe128dad8f97cc9af7c55a264d1fc5ab677195","versionType":"git"},{"lessThan":"a77f8434954cb1e9c42c3854e40855fdcf5ab235","status":"affected","version":"b8fe128dad8f97cc9af7c55a264d1fc5ab677195","versionType":"git"},{"lessThan":"3373f263bb647fcc3b5237cfaef757633b9ee25e","status":"affected","version":"b8fe128dad8f97cc9af7c55a264d1fc5ab677195","versionType":"git"},{"lessThan":"45379303124487db3a81219af7565d41f498167f","status":"affected","version":"b8fe128dad8f97cc9af7c55a264d1fc5ab677195","versionType":"git"},{"lessThan":"3a01b2614e84361aa222f67bc628593987e5cdb2","status":"affected","version":"b8fe128dad8f97cc9af7c55a264d1fc5ab677195","versionType":"git"},{"lessThan":"2eead19334516c8e9927c11b448fbe512b1f18a1","status":"affected","version":"b8fe128dad8f97cc9af7c55a264d1fc5ab677195","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/base/arch_topology.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.7"},{"lessThan":"5.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.246","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.196","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.158","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.115","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.56","versionType":"semver"},{"lessThanOrEqual":"6.17.*","status":"unaffected","version":"6.17.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.18","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.246","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.196","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.158","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.115","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.56","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.17.6","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18","versionStartIncluding":"5.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\narch_topology: Fix incorrect error check in topology_parse_cpu_capacity()\n\nFix incorrect use of PTR_ERR_OR_ZERO() in topology_parse_cpu_capacity()\nwhich causes the code to proceed with NULL clock pointers. The current\nlogic uses !PTR_ERR_OR_ZERO(cpu_clk) which evaluates to true for both\nvalid pointers and NULL, leading to potential NULL pointer dereference\nin clk_get_rate().\n\nPer include/linux/err.h documentation, PTR_ERR_OR_ZERO(ptr) returns:\n\"The error code within @ptr if it is an error pointer; 0 otherwise.\"\n\nThis means PTR_ERR_OR_ZERO() returns 0 for both valid pointers AND NULL\npointers. Therefore !PTR_ERR_OR_ZERO(cpu_clk) evaluates to true (proceed)\nwhen cpu_clk is either valid or NULL, causing clk_get_rate(NULL) to be\ncalled when of_clk_get() returns NULL.\n\nReplace with !IS_ERR_OR_NULL(cpu_clk) which only proceeds for valid\npointers, preventing potential NULL pointer dereference in clk_get_rate()."}],"providerMetadata":{"dateUpdated":"2026-05-11T21:47:35.335Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/64da320252e43456cc9ec3055ff567f168467b37"},{"url":"https://git.kernel.org/stable/c/02fbea0864fd4a863671f5d418129258d7159f68"},{"url":"https://git.kernel.org/stable/c/a77f8434954cb1e9c42c3854e40855fdcf5ab235"},{"url":"https://git.kernel.org/stable/c/3373f263bb647fcc3b5237cfaef757633b9ee25e"},{"url":"https://git.kernel.org/stable/c/45379303124487db3a81219af7565d41f498167f"},{"url":"https://git.kernel.org/stable/c/3a01b2614e84361aa222f67bc628593987e5cdb2"},{"url":"https://git.kernel.org/stable/c/2eead19334516c8e9927c11b448fbe512b1f18a1"}],"title":"arch_topology: Fix incorrect error check in topology_parse_cpu_capacity()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2025-40346","datePublished":"2025-12-16T13:30:20.395Z","dateReserved":"2025-04-16T07:20:57.187Z","dateUpdated":"2026-05-11T21:47:35.335Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-12-16 14:15:46","lastModifiedDate":"2026-10-14 13:10:00","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"40346","Ordinal":"1","Title":"arch_topology: Fix incorrect error check in topology_parse_cpu_c","CVE":"CVE-2025-40346","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"40346","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\narch_topology: Fix incorrect error check in topology_parse_cpu_capacity()\n\nFix incorrect use of PTR_ERR_OR_ZERO() in topology_parse_cpu_capacity()\nwhich causes the code to proceed with NULL clock pointers. The current\nlogic uses !PTR_ERR_OR_ZERO(cpu_clk) which evaluates to true for both\nvalid pointers and NULL, leading to potential NULL pointer dereference\nin clk_get_rate().\n\nPer include/linux/err.h documentation, PTR_ERR_OR_ZERO(ptr) returns:\n\"The error code within @ptr if it is an error pointer; 0 otherwise.\"\n\nThis means PTR_ERR_OR_ZERO() returns 0 for both valid pointers AND NULL\npointers. Therefore !PTR_ERR_OR_ZERO(cpu_clk) evaluates to true (proceed)\nwhen cpu_clk is either valid or NULL, causing clk_get_rate(NULL) to be\ncalled when of_clk_get() returns NULL.\n\nReplace with !IS_ERR_OR_NULL(cpu_clk) which only proceeds for valid\npointers, preventing potential NULL pointer dereference in clk_get_rate().","Type":"Description","Title":"arch_topology: Fix incorrect error check in topology_parse_cpu_c"}]}}}