{"id":"CVE-2026-98045","title":"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 …","summary":"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 …","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= d4dd9775ec242425576af93daadb80a34083a53c < 44b8d370f2725bad215da3e67668e98ba96671bd","Linux >= d4dd9775ec242425576af93daadb80a34083a53c < 3014e8a8bdad55075d89836ad9c10710a9a69837","Linux >= d4dd9775ec242425576af93daadb80a34083a53c < 19e8d5a98afd071d8c1c5adeccf92b3c42eddc70","Linux >= d4dd9775ec242425576af93daadb80a34083a53c < 9d02927fdf4e930893c92e35fed01a2704496900","Linux 6.12"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:33.330","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98045","references":[{"url":"https://git.kernel.org/stable/c/19e8d5a98afd071d8c1c5adeccf92b3c42eddc70","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3014e8a8bdad55075d89836ad9c10710a9a69837","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/44b8d370f2725bad215da3e67668e98ba96671bd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9d02927fdf4e930893c92e35fed01a2704496900","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98045.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98045"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541151"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98045"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98045"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98045.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-25T11:06:38.848Z","epss":0.00168,"epssPercentile":0.0602,"cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-1322"],"slug":"CVE-2026-98045","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98045.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":212408,"id":"CVE-2026-98045","ts":1790668181935,"field":"cvss","old":null,"new":"5.5"},{"seq":212407,"id":"CVE-2026-98045","ts":1790668181935,"field":"severity","old":"none","new":"medium"}]}