CVE-2026-98046

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98046", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:19:56.071Z", "datePublished": "2026-09-25T10:23:56.691Z", "dateUpdated": "2026-10-19T09:12:52.051Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:12:52.051Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark bpf_btf_find_by_name_kind() as sleepable\n\nWhen bpf_btf_find_by_name_kind() finds a type in module BTF, it\nreturns a new BTF object fd through __btf_new_fd(). This reaches\nanon_inode_getfd(), which can sleep while allocating or expanding the\ncurrent task fd table.\n\nThe helper prototype does not set might_sleep, so the verifier allows\nthe helper in non-sleepable contexts such as BPF timer callbacks. The\nfd allocation can then sleep in softirq context and install the fd into\nthe interrupted task.\n\nMark the helper as sleepable. This preserves calls from the main body\nof a sleepable syscall program while rejecting calls from its\nnon-sleepable regions."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/btf.c"], "versions": [{"version": "3d78417b60fba249cc555468cb72d96f5cde2964", "lessThan": "7bf23cf7c9c0e0b5e638e497cdc0ec3f223742cc", "status": "affected", "versionType": "git"}, {"version": "3d78417b60fba249cc555468cb72d96f5cde2964", "lessThan": "b843ab43ac9d2fa1ddd0dab8d0dcc19dbf764e2f", "status": "affected", "versionType": "git"}, {"version": "3d78417b60fba249cc555468cb72d96f5cde2964", "lessThan": "29e40175617216fbd4544529f6bfb51d1ab95ba1", "status": "affected", "versionType": "git"}, {"version": "3d78417b60fba249cc555468cb72d96f5cde2964", "lessThan": "4d8784226bd3c6a707975081f986078f40456cec", "status": "affected", "versionType": "git"}, {"version": "3d78417b60fba249cc555468cb72d96f5cde2964", "lessThan": "17f54a8f2b9714529d56edbbe12d448ccdbbf469", "status": "affected", "versionType": "git"}, {"version": "3d78417b60fba249cc555468cb72d96f5cde2964", "lessThan": "620614bf7672130c43b3cff375525a2202f61979", "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/bpf/btf.c"], "versions": [{"version": "5.14", "status": "affected"}, {"version": "0", "lessThan": "5.14", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7bf23cf7c9c0e0b5e638e497cdc0ec3f223742cc"}, {"url": "https://git.kernel.org/stable/c/b843ab43ac9d2fa1ddd0dab8d0dcc19dbf764e2f"}, {"url": "https://git.kernel.org/stable/c/29e40175617216fbd4544529f6bfb51d1ab95ba1"}, {"url": "https://git.kernel.org/stable/c/4d8784226bd3c6a707975081f986078f40456cec"}, {"url": "https://git.kernel.org/stable/c/17f54a8f2b9714529d56edbbe12d448ccdbbf469"}, {"url": "https://git.kernel.org/stable/c/620614bf7672130c43b3cff375525a2202f61979"}], "title": "bpf: Mark bpf_btf_find_by_name_kind() as sleepable", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/bpf/btf.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7bf23cf7c9c0e0b5e638e497cdc0ec3f223742cc", "status": "affected", "version": "3d78417b60fba249cc555468cb72d96f5cde2964", "versionType": "git"}, {"lessThan": "b843ab43ac9d2fa1ddd0dab8d0dcc19dbf764e2f", "status": "affected", "version": "3d78417b60fba249cc555468cb72d96f5cde2964", "versionType": "git"}, {"lessThan": "29e40175617216fbd4544529f6bfb51d1ab95ba1", "status": "affected", "version": "3d78417b60fba249cc555468cb72d96f5cde2964", "versionType": "git"}, {"lessThan": "4d8784226bd3c6a707975081f986078f40456cec", "status": "affected", "version": "3d78417b60fba249cc555468cb72d96f5cde2964", "versionType": "git"}, {"lessThan": "17f54a8f2b9714529d56edbbe12d448ccdbbf469", "status": "affected", "version": "3d78417b60fba249cc555468cb72d96f5cde2964", "versionType": "git"}, {"lessThan": "620614bf7672130c43b3cff375525a2202f61979", "status": "affected", "version": "3d78417b60fba249cc555468cb72d96f5cde2964", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/bpf/btf.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.14"}, {"lessThan": "5.14", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark bpf_btf_find_by_name_kind() as sleepable\n\nWhen bpf_btf_find_by_name_kind() finds a type in module BTF, it\nreturns a new BTF object fd through __btf_new_fd(). This reaches\nanon_inode_getfd(), which can sleep while allocating or expanding the\ncurrent task fd table.\n\nThe helper prototype does not set might_sleep, so the verifier allows\nthe helper in non-sleepable contexts such as BPF timer callbacks. The\nfd allocation can then sleep in softirq context and install the fd into\nthe interrupted task.\n\nMark the helper as sleepable. This preserves calls from the main body\nof a sleepable syscall program while rejecting calls from its\nnon-sleepable regions."}], "id": "CVE-2026-98046", "lastModified": "2026-10-19T10:17:58.483", "metrics": {}, "published": "2026-09-25T11:17:33.440", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/17f54a8f2b9714529d56edbbe12d448ccdbbf469"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/29e40175617216fbd4544529f6bfb51d1ab95ba1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4d8784226bd3c6a707975081f986078f40456cec"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/620614bf7672130c43b3cff375525a2202f61979"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7bf23cf7c9c0e0b5e638e497cdc0ec3f223742cc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b843ab43ac9d2fa1ddd0dab8d0dcc19dbf764e2f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: bpf: Mark bpf_btf_find_by_name_kind() as sleepable", "id": "2541185", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541185"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1322", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: Mark bpf_btf_find_by_name_kind() as sleepable\nWhen bpf_btf_find_by_name_kind() finds a type in module BTF, it\nreturns a new BTF object fd through __btf_new_fd(). This reaches\nanon_inode_getfd(), which can sleep while allocating or expanding the\ncurrent task fd table.\nThe helper prototype does not set might_sleep, so the verifier allows\nthe helper in non-sleepable contexts such as BPF timer callbacks. The\nfd allocation can then sleep in softirq context and install the fd into\nthe interrupted task.\nMark the helper as sleepable. This preserves calls from the main body\nof a sleepable syscall program while rejecting calls from its\nnon-sleepable regions.", "A flaw was found in the Linux kernel's BPF (Berkeley Packet Filter) subsystem. The bpf_btf_find_by_name_kind() helper function was not properly marked as sleepable (capable of pausing execution while waiting for resources), allowing it to be executed in non-sleepable contexts such as timer callbacks. A local user with permissions to load BPF programs can exploit this issue to trigger a sleep operation during an atomic context. This can lead to kernel instability or a system crash, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-98046", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98046\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98046\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98046.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3d78417b60fba249cc555468cb72d96f5cde2964,29e40175617216fbd4544529f6bfb51d1ab95ba1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3d78417b60fba249cc555468cb72d96f5cde2964,4d8784226bd3c6a707975081f986078f40456cec)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3d78417b60fba249cc555468cb72d96f5cde2964,17f54a8f2b9714529d56edbbe12d448ccdbbf469)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3d78417b60fba249cc555468cb72d96f5cde2964,620614bf7672130c43b3cff375525a2202f61979)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.14"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.14)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.111,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.7,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-25T16:00:18.017056+00:00", "updated": "2026-09-30T14:00:07.502092+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}