CVE-2026-99045

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99045", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.387Z", "datePublished": "2026-10-23T12:22:09.352Z", "dateUpdated": "2026-10-30T12:41:16.971Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:41:16.971Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nibmveth: h_free logical LAN on open-fail after register\n\nibmveth_open() registers the logical LAN, then allocates the RX\nbuffer pools. A pool failure jumps to out_free_buffer_pools without\nh_free_logical_lan(), so PHYP still owns the buffer-list page when\nit is unmapped. request_irq() failure already issued the hypercall\nbefore taking the same label.\n\nMove that h_free to the shared post-register unwind so both paths\nderegister before the buffer list is unmapped."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/ibm/ibmveth.c"], "versions": [{"version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "lessThan": "073df7871a7023298ce27cfa518fbc30cc155651", "status": "affected", "versionType": "git"}, {"version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "lessThan": "7bd67d324d952101b3431c796d79f5e329bba159", "status": "affected", "versionType": "git"}, {"version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "lessThan": "eae138e880686ce19879aa0d158fa3c73516f632", "status": "affected", "versionType": "git"}, {"version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "lessThan": "decb4d4ead2c71ef698727734ab5024a872eb372", "status": "affected", "versionType": "git"}, {"version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "lessThan": "c54bbdf6f0731102a4bf7f5e4ee535b3ea415996", "status": "affected", "versionType": "git"}, {"version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "lessThan": "a065bd31ec462f6f9c267026b708dd020f122723", "status": "affected", "versionType": "git"}, {"version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "lessThan": "d24fdec1413c656d29298097926e77542785ca0c", "status": "affected", "versionType": "git"}, {"version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "lessThan": "af0524bf4ce1a4cbd2946aa81751582951cfcab5", "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/net/ethernet/ibm/ibmveth.c"], "versions": [{"version": "4.13", "status": "affected"}, {"version": "0", "lessThan": "4.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.273", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.113", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.11", "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": "4.13", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": 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"https://git.kernel.org/stable/c/af0524bf4ce1a4cbd2946aa81751582951cfcab5"}], "title": "ibmveth: h_free logical LAN on open-fail after register", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/ibm/ibmveth.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "073df7871a7023298ce27cfa518fbc30cc155651", "status": "affected", "version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "versionType": "git"}, {"lessThan": "7bd67d324d952101b3431c796d79f5e329bba159", "status": "affected", "version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "versionType": "git"}, {"lessThan": "eae138e880686ce19879aa0d158fa3c73516f632", "status": "affected", "version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "versionType": "git"}, {"lessThan": "decb4d4ead2c71ef698727734ab5024a872eb372", "status": "affected", "version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "versionType": "git"}, {"lessThan": "c54bbdf6f0731102a4bf7f5e4ee535b3ea415996", "status": "affected", "version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "versionType": "git"}, {"lessThan": "a065bd31ec462f6f9c267026b708dd020f122723", "status": "affected", "version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "versionType": "git"}, {"lessThan": "d24fdec1413c656d29298097926e77542785ca0c", "status": "affected", "version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "versionType": "git"}, {"lessThan": "af0524bf4ce1a4cbd2946aa81751582951cfcab5", "status": "affected", "version": "d43732ce021f4244a4c53a45d57ad0c13c30ed94", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/ibm/ibmveth.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.13"}, {"lessThan": "4.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.273", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.113", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.57", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.11", "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\nibmveth: h_free logical LAN on open-fail after register\n\nibmveth_open() registers the logical LAN, then allocates the RX\nbuffer pools. A pool failure jumps to out_free_buffer_pools without\nh_free_logical_lan(), so PHYP still owns the buffer-list page when\nit is unmapped. request_irq() failure already issued the hypercall\nbefore taking the same label.\n\nMove that h_free to the shared post-register unwind so both paths\nderegister before the buffer list is unmapped."}], "id": "CVE-2026-99045", "lastModified": "2026-10-30T13:21:41.573", "metrics": {}, "published": "2026-10-23T13:17:27.953", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/073df7871a7023298ce27cfa518fbc30cc155651"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7bd67d324d952101b3431c796d79f5e329bba159"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a065bd31ec462f6f9c267026b708dd020f122723"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/af0524bf4ce1a4cbd2946aa81751582951cfcab5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c54bbdf6f0731102a4bf7f5e4ee535b3ea415996"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d24fdec1413c656d29298097926e77542785ca0c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/decb4d4ead2c71ef698727734ab5024a872eb372"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eae138e880686ce19879aa0d158fa3c73516f632"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: ibmveth: h_free logical LAN on open-fail after register", "id": "2559839", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2559839"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-459", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nibmveth: h_free logical LAN on open-fail after register\nibmveth_open() registers the logical LAN, then allocates the RX\nbuffer pools. A pool failure jumps to out_free_buffer_pools without\nh_free_logical_lan(), so PHYP still owns the buffer-list page when\nit is unmapped. request_irq() failure already issued the hypercall\nbefore taking the same label.\nMove that h_free to the shared post-register unwind so both paths\nderegister before the buffer list is unmapped.", "A flaw was found in the Linux kernel's IBM Virtual Ethernet (ibmveth) driver. This issue can lead to a denial of service (DoS) or system instability due to improper resource cleanup during device activation. When memory allocation fails after registering a logical network with the underlying hypervisor, the driver unmaps memory buffers without deregistering the interface, leaving stale memory references in the hypervisor. A local user with administrative privileges could trigger this condition when attempting to bring up the network interface under low-memory conditions."], "name": "CVE-2026-99045", "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": "Fix deferred", "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": "2026-10-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-99045\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-99045\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-99045.mbox"], "threat_severity": "Moderate"}

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