{"api_version":"1","generated_at":"2026-09-25T22:18:11+00:00","cve":"CVE-2026-98045","urls":{"html":"https://cve.report/CVE-2026-98045","api":"https://cve.report/api/cve/CVE-2026-98045.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98045","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98045"},"summary":{"title":"bpf: Mark faultable stack helpers as sleepable","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark faultable stack helpers as sleepable\n\nThe faultable variants of bpf_get_stack() and bpf_get_task_stack() pass\nmay_fault=true into the common stack collection code. Resolving user-space\nbuild IDs may then call build_id_parse_file() and block on filesystem\nreads.\n\nNeither helper prototype sets might_sleep. Since prototype selection uses\nthe sleepability of the whole program, the verifier can still allow these\nhelpers from a non-sleepable region within that program, such as an\nexplicit RCU or preemption-disabled region. The task-stack helper can also\nbe called from a non-sleepable timer callback of a sleepable program.\n\nMark both faultable prototypes as sleepable. The existing helper context\ncheck then rejects these calls while continuing to allow them in genuinely\nsleepable contexts.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:33","updated_at":"2026-09-25 11:17:33"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/19e8d5a98afd071d8c1c5adeccf92b3c42eddc70","name":"https://git.kernel.org/stable/c/19e8d5a98afd071d8c1c5adeccf92b3c42eddc70","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3014e8a8bdad55075d89836ad9c10710a9a69837","name":"https://git.kernel.org/stable/c/3014e8a8bdad55075d89836ad9c10710a9a69837","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/44b8d370f2725bad215da3e67668e98ba96671bd","name":"https://git.kernel.org/stable/c/44b8d370f2725bad215da3e67668e98ba96671bd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9d02927fdf4e930893c92e35fed01a2704496900","name":"https://git.kernel.org/stable/c/9d02927fdf4e930893c92e35fed01a2704496900","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98045","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98045","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d4dd9775ec242425576af93daadb80a34083a53c 44b8d370f2725bad215da3e67668e98ba96671bd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d4dd9775ec242425576af93daadb80a34083a53c 3014e8a8bdad55075d89836ad9c10710a9a69837 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d4dd9775ec242425576af93daadb80a34083a53c 19e8d5a98afd071d8c1c5adeccf92b3c42eddc70 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d4dd9775ec242425576af93daadb80a34083a53c 9d02927fdf4e930893c92e35fed01a2704496900 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc2 * 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":["kernel/bpf/stackmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"44b8d370f2725bad215da3e67668e98ba96671bd","status":"affected","version":"d4dd9775ec242425576af93daadb80a34083a53c","versionType":"git"},{"lessThan":"3014e8a8bdad55075d89836ad9c10710a9a69837","status":"affected","version":"d4dd9775ec242425576af93daadb80a34083a53c","versionType":"git"},{"lessThan":"19e8d5a98afd071d8c1c5adeccf92b3c42eddc70","status":"affected","version":"d4dd9775ec242425576af93daadb80a34083a53c","versionType":"git"},{"lessThan":"9d02927fdf4e930893c92e35fed01a2704496900","status":"affected","version":"d4dd9775ec242425576af93daadb80a34083a53c","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/bpf/stackmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.12"},{"lessThan":"6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc2","versionStartIncluding":"6.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark faultable stack helpers as sleepable\n\nThe faultable variants of bpf_get_stack() and bpf_get_task_stack() pass\nmay_fault=true into the common stack collection code. Resolving user-space\nbuild IDs may then call build_id_parse_file() and block on filesystem\nreads.\n\nNeither helper prototype sets might_sleep. Since prototype selection uses\nthe sleepability of the whole program, the verifier can still allow these\nhelpers from a non-sleepable region within that program, such as an\nexplicit RCU or preemption-disabled region. The task-stack helper can also\nbe called from a non-sleepable timer callback of a sleepable program.\n\nMark both faultable prototypes as sleepable. The existing helper context\ncheck then rejects these calls while continuing to allow them in genuinely\nsleepable contexts."}],"providerMetadata":{"dateUpdated":"2026-09-25T10:23:56.089Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/44b8d370f2725bad215da3e67668e98ba96671bd"},{"url":"https://git.kernel.org/stable/c/3014e8a8bdad55075d89836ad9c10710a9a69837"},{"url":"https://git.kernel.org/stable/c/19e8d5a98afd071d8c1c5adeccf92b3c42eddc70"},{"url":"https://git.kernel.org/stable/c/9d02927fdf4e930893c92e35fed01a2704496900"}],"title":"bpf: Mark faultable stack helpers as sleepable","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98045","datePublished":"2026-09-25T10:23:56.089Z","dateReserved":"2026-09-25T10:19:56.071Z","dateUpdated":"2026-09-25T10:23:56.089Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:33","lastModifiedDate":"2026-09-25 11:17:33","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98045","Ordinal":"1","Title":"bpf: Mark faultable stack helpers as sleepable","CVE":"CVE-2026-98045","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98045","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark faultable stack helpers as sleepable\n\nThe faultable variants of bpf_get_stack() and bpf_get_task_stack() pass\nmay_fault=true into the common stack collection code. Resolving user-space\nbuild IDs may then call build_id_parse_file() and block on filesystem\nreads.\n\nNeither helper prototype sets might_sleep. Since prototype selection uses\nthe sleepability of the whole program, the verifier can still allow these\nhelpers from a non-sleepable region within that program, such as an\nexplicit RCU or preemption-disabled region. The task-stack helper can also\nbe called from a non-sleepable timer callback of a sleepable program.\n\nMark both faultable prototypes as sleepable. The existing helper context\ncheck then rejects these calls while continuing to allow them in genuinely\nsleepable contexts.","Type":"Description","Title":"bpf: Mark faultable stack helpers as sleepable"}]}}}