{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72448", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.931Z", "datePublished": "2026-08-15T05:56:57.701Z", "dateUpdated": "2026-08-17T05:14:50.660Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:14:50.660Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: Fix leak of SQ timestamp buffer on teardown\n\nThe send-queue timestamp ring is allocated with qmem_alloc() when\ntimestamping is used, but otx2_free_sq_res() never freed sq->timestamps,\nleaking that memory across ifdown and device removal. 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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "c642a530aaaeb9a3e356cedfe77955e7f983380e", "status": "affected", "version": "c9c12d339d93366732112d7ff472958834bfc3c5", "versionType": "git"}, {"lessThan": "e68ada66afcae0bc2a7c06b43c5a9a081d29e7b4", "status": "affected", "version": "c9c12d339d93366732112d7ff472958834bfc3c5", "versionType": "git"}, {"lessThan": "d6c0b0c802d3c49b86cad665a7f3790dc55a0394", "status": "affected", "version": "c9c12d339d93366732112d7ff472958834bfc3c5", "versionType": "git"}, {"lessThan": "19d2d36e193c3fb515c052a56bfc83d8ac7b6764", "status": "affected", "version": "c9c12d339d93366732112d7ff472958834bfc3c5", "versionType": "git"}, {"lessThan": "e8e9dff204e8d8553495893e1a44d2b5021648de", "status": "affected", "version": "c9c12d339d93366732112d7ff472958834bfc3c5", "versionType": "git"}, {"lessThan": "3d45d40b872aec0073d4cf08956a6c9b87c5e396", "status": "affected", "version": "c9c12d339d93366732112d7ff472958834bfc3c5", "versionType": "git"}, {"lessThan": "452ec5058ea4ed63adae8d6beeac9ee687fe8061", "status": "affected", "version": "c9c12d339d93366732112d7ff472958834bfc3c5", "versionType": "git"}, {"lessThan": "a056db30de92945ff8ee6033096678bfbae878e3", "status": "affected", "version": "c9c12d339d93366732112d7ff472958834bfc3c5", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.10"}, {"lessThan": "5.10", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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\nocteontx2-pf: Fix leak of SQ timestamp buffer on teardown\n\nThe send-queue timestamp ring is allocated with qmem_alloc() when\ntimestamping is used, but otx2_free_sq_res() never freed sq->timestamps,\nleaking that memory across ifdown and device removal. Add the missing\nqmem_free() alongside the other SQ companion buffers."}], "id": "CVE-2026-72448", "lastModified": "2026-08-17T06:19:12.280", "metrics": {}, "published": "2026-08-15T06:22:18.723", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/19d2d36e193c3fb515c052a56bfc83d8ac7b6764"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3d45d40b872aec0073d4cf08956a6c9b87c5e396"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/452ec5058ea4ed63adae8d6beeac9ee687fe8061"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a056db30de92945ff8ee6033096678bfbae878e3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c642a530aaaeb9a3e356cedfe77955e7f983380e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d6c0b0c802d3c49b86cad665a7f3790dc55a0394"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e68ada66afcae0bc2a7c06b43c5a9a081d29e7b4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e8e9dff204e8d8553495893e1a44d2b5021648de"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: octeontx2-pf: Fix leak of SQ timestamp buffer on teardown", "id": "2516365", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516365"}, "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-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nocteontx2-pf: Fix leak of SQ timestamp buffer on teardown\nThe send-queue timestamp ring is allocated with qmem_alloc() when\ntimestamping is used, but otx2_free_sq_res() never freed sq->timestamps,\nleaking that memory across ifdown and device removal. Add the missing\nqmem_free() alongside the other SQ companion buffers.", "A flaw was found in the `octeontx2-pf` driver in the Linux kernel. When a network interface utilizing this driver is shut down or the device is removed, a memory leak occurs because the send-queue timestamp buffer is not properly deallocated. This continuous memory accumulation can lead to system instability and potentially a denial of service (DoS) over an extended period."], "name": "CVE-2026-72448", "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": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72448\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72448\nhttps://lore.kernel.org/linux-cve-announce/2026081530-CVE-2026-72448-937a@gregkh/T"], "threat_severity": "Moderate"}

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