{"api_version":"1","generated_at":"2026-09-18T00:39:21+00:00","cve":"CVE-2026-90306","urls":{"html":"https://cve.report/CVE-2026-90306","api":"https://cve.report/api/cve/CVE-2026-90306.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90306","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90306"},"summary":{"title":"ARM: 9481/2: breakpoint: CFI breakpoints only on demand","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nARM: 9481/2: breakpoint: CFI breakpoints only on demand\n\nThis removes the stub hw_breakpoint_cfi_handler() from ARM, making\nit not steal breakpoint type 0x03 (ARM_ENTRY_CFI_BREAKPOINT) unless\nCFI is actively used in the kernel.\n\nWhen not instrumenting with CFI, or when a breakpoint is issued in\nuserspace, we fall through to return 1 from hw_breakpoint_pending()\n\"unhandled fault\" so userspace can make use of this breakpoint.\n\nTested with LKDTM and this command line:\necho CFI_FORWARD_PROTO > /sys/kernel/debug/provoke-crash/DIRECT\nstill works as expected.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:28","updated_at":"2026-09-17 17:17:28"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/8ed9bff906cf8036531d1559f10e82733a52b41f","name":"https://git.kernel.org/stable/c/8ed9bff906cf8036531d1559f10e82733a52b41f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/da64b150e4b7bee615b33ab21f3137c31ec36922","name":"https://git.kernel.org/stable/c/da64b150e4b7bee615b33ab21f3137c31ec36922","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/22107402c2669b0163d43cc68901a2c4a59fa43a","name":"https://git.kernel.org/stable/c/22107402c2669b0163d43cc68901a2c4a59fa43a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/314f1a6762b5d51b37784ed7dc701d4c3d893703","name":"https://git.kernel.org/stable/c/314f1a6762b5d51b37784ed7dc701d4c3d893703","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90306","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90306","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 22107402c2669b0163d43cc68901a2c4a59fa43a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 314f1a6762b5d51b37784ed7dc701d4c3d893703 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 da64b150e4b7bee615b33ab21f3137c31ec36922 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 8ed9bff906cf8036531d1559f10e82733a52b41f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * 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":["arch/arm/kernel/hw_breakpoint.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"22107402c2669b0163d43cc68901a2c4a59fa43a","status":"affected","version":"c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3","versionType":"git"},{"lessThan":"314f1a6762b5d51b37784ed7dc701d4c3d893703","status":"affected","version":"c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3","versionType":"git"},{"lessThan":"da64b150e4b7bee615b33ab21f3137c31ec36922","status":"affected","version":"c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3","versionType":"git"},{"lessThan":"8ed9bff906cf8036531d1559f10e82733a52b41f","status":"affected","version":"c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["arch/arm/kernel/hw_breakpoint.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.10"},{"lessThan":"6.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nARM: 9481/2: breakpoint: CFI breakpoints only on demand\n\nThis removes the stub hw_breakpoint_cfi_handler() from ARM, making\nit not steal breakpoint type 0x03 (ARM_ENTRY_CFI_BREAKPOINT) unless\nCFI is actively used in the kernel.\n\nWhen not instrumenting with CFI, or when a breakpoint is issued in\nuserspace, we fall through to return 1 from hw_breakpoint_pending()\n\"unhandled fault\" so userspace can make use of this breakpoint.\n\nTested with LKDTM and this command line:\necho CFI_FORWARD_PROTO > /sys/kernel/debug/provoke-crash/DIRECT\nstill works as expected."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:08:28.387Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/22107402c2669b0163d43cc68901a2c4a59fa43a"},{"url":"https://git.kernel.org/stable/c/314f1a6762b5d51b37784ed7dc701d4c3d893703"},{"url":"https://git.kernel.org/stable/c/da64b150e4b7bee615b33ab21f3137c31ec36922"},{"url":"https://git.kernel.org/stable/c/8ed9bff906cf8036531d1559f10e82733a52b41f"}],"title":"ARM: 9481/2: breakpoint: CFI breakpoints only on demand","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90306","datePublished":"2026-09-17T16:08:28.387Z","dateReserved":"2026-09-11T19:38:34.800Z","dateUpdated":"2026-09-17T16:08:28.387Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:28","lastModifiedDate":"2026-09-17 17:17:28","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90306","Ordinal":"1","Title":"ARM: 9481/2: breakpoint: CFI breakpoints only on demand","CVE":"CVE-2026-90306","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90306","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nARM: 9481/2: breakpoint: CFI breakpoints only on demand\n\nThis removes the stub hw_breakpoint_cfi_handler() from ARM, making\nit not steal breakpoint type 0x03 (ARM_ENTRY_CFI_BREAKPOINT) unless\nCFI is actively used in the kernel.\n\nWhen not instrumenting with CFI, or when a breakpoint is issued in\nuserspace, we fall through to return 1 from hw_breakpoint_pending()\n\"unhandled fault\" so userspace can make use of this breakpoint.\n\nTested with LKDTM and this command line:\necho CFI_FORWARD_PROTO > /sys/kernel/debug/provoke-crash/DIRECT\nstill works as expected.","Type":"Description","Title":"ARM: 9481/2: breakpoint: CFI breakpoints only on demand"}]}}}