{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53106", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.385Z", "datePublished": "2026-06-24T16:30:41.382Z", "dateUpdated": "2026-06-24T16:30:41.382Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:30:41.382Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Do not allow deleting local storage in NMI\n\nCurrently, local storage may deadlock when deferring freeing selem or\nlocal storage through kfree_rcu(), call_rcu() or call_rcu_tasks_trace()\nin NMI or reentrant. Since deleting selem in NMI is an unlikely use\ncase, partially mitigate it by returning error when calling from\nbpf_xxx_storage_delete() helpers in NMI. Note that, it is still possible\nto deadlock through reentrant. A full mitigation requires returning\nerror when irqs_disabled() is true, which, however is too heavy-handed\nfor bpf_xxx_storage_delete().\n\nThe long-term solution requires _nolock versions of call_rcu. Another\npossible solution is to defer the free through irq_work [0], but it\nwould grow the size of selem, which is non-ideal.\n\nThe check is only needed in bpf_selem_unlink(), which is used by helpers\nand syscalls. bpf_selem_unlink_nofail() is fine as it is called during\nmap and owner tear down that never run in NMI or reentrant.\n\n[0] https://lore.kernel.org/bpf/20260205190233.912-1-alexei.starovoitov@gmail.com/"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/bpf_local_storage.c"], "versions": [{"version": "a10787e6d58c24b51e91c19c6d16c5da89fcaa4b", "lessThan": "e84acaf936970b5b0be2c93bbf255295ba9406df", "status": "affected", "versionType": "git"}, {"version": "a10787e6d58c24b51e91c19c6d16c5da89fcaa4b", "lessThan": "350de5b8a9befaa2a68861c51f671d4f5f751ca5", "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/bpf_local_storage.c"], "versions": [{"version": "5.13", "status": "affected"}, {"version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "5.13", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e84acaf936970b5b0be2c93bbf255295ba9406df"}, {"url": "https://git.kernel.org/stable/c/350de5b8a9befaa2a68861c51f671d4f5f751ca5"}], "title": "bpf: Do not allow deleting local storage in NMI", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: bpf: Do not allow deleting local storage in NMI", "id": "2492411", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492411"}, "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-833", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: Do not allow deleting local storage in NMI\nCurrently, local storage may deadlock when deferring freeing selem or\nlocal storage through kfree_rcu(), call_rcu() or call_rcu_tasks_trace()\nin NMI or reentrant. Since deleting selem in NMI is an unlikely use\ncase, partially mitigate it by returning error when calling from\nbpf_xxx_storage_delete() helpers in NMI. Note that, it is still possible\nto deadlock through reentrant. A full mitigation requires returning\nerror when irqs_disabled() is true, which, however is too heavy-handed\nfor bpf_xxx_storage_delete().\nThe long-term solution requires _nolock versions of call_rcu. Another\npossible solution is to defer the free through irq_work [0], but it\nwould grow the size of selem, which is non-ideal.\nThe check is only needed in bpf_selem_unlink(), which is used by helpers\nand syscalls. bpf_selem_unlink_nofail() is fine as it is called during\nmap and owner tear down that never run in NMI or reentrant.\n[0] https://lore.kernel.org/bpf/20260205190233.912-1-alexei.starovoitov@gmail.com/", "A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) local storage. This vulnerability can lead to a system deadlock when local storage is deleted within a Non-Maskable Interrupt (NMI) context. An attacker could potentially exploit this by triggering the deletion of BPF local storage during an NMI, resulting in a denial of service."], "name": "CVE-2026-53106", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "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"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53106\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53106\nhttps://lore.kernel.org/linux-cve-announce/2026062413-CVE-2026-53106-3a3d@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a10787e6d58c24b51e91c19c6d16c5da89fcaa4b,e84acaf936970b5b0be2c93bbf255295ba9406df)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a10787e6d58c24b51e91c19c6d16c5da89fcaa4b,350de5b8a9befaa2a68861c51f671d4f5f751ca5)"}}], "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": "5.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.10,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "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": "2026-06-24T20:45:03.361015+00:00", "updated": "2026-06-27T02:15:10.130876+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-400", "CWE-833"]}