{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40160", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.176Z", "datePublished": "2025-11-12T10:24:36.429Z", "dateUpdated": "2025-11-12T10:24:36.429Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-11-12T10:24:36.429Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen/events: Return -EEXIST for bound VIRQs\n\nChange find_virq() to return -EEXIST when a VIRQ is bound to a\ndifferent CPU than the one passed in. With that, remove the BUG_ON()\nfrom bind_virq_to_irq() to propogate the error upwards.\n\nSome VIRQs are per-cpu, but others are per-domain or global. Those must\nbe bound to CPU0 and can then migrate elsewhere. The lookup for\nper-domain and global will probably fail when migrated off CPU 0,\nespecially when the current CPU is tracked. This now returns -EEXIST\ninstead of BUG_ON().\n\nA second call to bind a per-domain or global VIRQ is not expected, but\nmake it non-fatal to avoid trying to look up the irq, since we don't\nknow which per_cpu(virq_to_irq) it will be in."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/xen/events/events_base.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "612ef6056855c0aacb9b25d1d853c435754483f7", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a1e7f07ae6b594f1ba5be46c6125b43bc505c5aa", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "f81db055a793eca9d05f79658ff62adafb41d664", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "07ce121d93a5e5fb2440a24da3dbf408fcee978e", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/xen/events/events_base.c"], "versions": [{"version": "6.6.113", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.54", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.4", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18-rc1", "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:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.6.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.12.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.17.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.18-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/612ef6056855c0aacb9b25d1d853c435754483f7"}, {"url": "https://git.kernel.org/stable/c/a1e7f07ae6b594f1ba5be46c6125b43bc505c5aa"}, {"url": "https://git.kernel.org/stable/c/f81db055a793eca9d05f79658ff62adafb41d664"}, {"url": "https://git.kernel.org/stable/c/07ce121d93a5e5fb2440a24da3dbf408fcee978e"}], "title": "xen/events: Return -EEXIST for bound VIRQs", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen/events: Return -EEXIST for bound VIRQs\n\nChange find_virq() to return -EEXIST when a VIRQ is bound to a\ndifferent CPU than the one passed in. With that, remove the BUG_ON()\nfrom bind_virq_to_irq() to propogate the error upwards.\n\nSome VIRQs are per-cpu, but others are per-domain or global. Those must\nbe bound to CPU0 and can then migrate elsewhere. The lookup for\nper-domain and global will probably fail when migrated off CPU 0,\nespecially when the current CPU is tracked. This now returns -EEXIST\ninstead of BUG_ON().\n\nA second call to bind a per-domain or global VIRQ is not expected, but\nmake it non-fatal to avoid trying to look up the irq, since we don't\nknow which per_cpu(virq_to_irq) it will be in."}], "id": "CVE-2025-40160", "lastModified": "2025-11-12T16:19:12.850", "metrics": {}, "published": "2025-11-12T11:15:46.123", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/07ce121d93a5e5fb2440a24da3dbf408fcee978e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/612ef6056855c0aacb9b25d1d853c435754483f7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a1e7f07ae6b594f1ba5be46c6125b43bc505c5aa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f81db055a793eca9d05f79658ff62adafb41d664"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: xen/events: Return -EEXIST for bound VIRQs", "id": "2414489", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2414489"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nxen/events: Return -EEXIST for bound VIRQs\nChange find_virq() to return -EEXIST when a VIRQ is bound to a\ndifferent CPU than the one passed in. With that, remove the BUG_ON()\nfrom bind_virq_to_irq() to propogate the error upwards.\nSome VIRQs are per-cpu, but others are per-domain or global. Those must\nbe bound to CPU0 and can then migrate elsewhere. The lookup for\nper-domain and global will probably fail when migrated off CPU 0,\nespecially when the current CPU is tracked. This now returns -EEXIST\ninstead of BUG_ON().\nA second call to bind a per-domain or global VIRQ is not expected, but\nmake it non-fatal to avoid trying to look up the irq, since we don't\nknow which per_cpu(virq_to_irq) it will be in."], "name": "CVE-2025-40160", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-11-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40160\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40160\nhttps://lore.kernel.org/linux-cve-announce/2025111239-CVE-2025-40160-b13a@gregkh/T"], "threat_severity": "Moderate"}