CVE-2026-64028

{"id": "CVE-2026-64028", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2e8578364061c4e88ae33bc20c2d6f64f365f6a2", "lessThan": "e3f5d42cdc2f167719564693675f1eead81378ea", "versionType": "git"}, {"status": "affected", "version": "dfd1cd57ee6067301841b7b0967c70f910a51150", "lessThan": "37377b39ff86dacbc533275c1155210d4fd5dc91", "versionType": "git"}, {"status": "affected", "version": "e5c223f46c2e0691461dd97510c15e1f77148872", "lessThan": "0402a1d3ddec565132867337ed44514a09d84728", "versionType": "git"}, {"status": "affected", "version": "9399a92989354e34086f9a5c379493217df83c5e", "lessThan": "e91687643c440ca3997d67646e6f80b92edc6703", "versionType": "git"}, {"status": "affected", "version": "3cb6cb9c5a547a1979ad74f38eefe8e3687d96e0", "lessThan": "be4e99038c1603fa6b329d8ee3e364825e17c353", "versionType": "git"}, {"status": "affected", "version": "0402c60abe769098d77f3b3bd1e29a97922b614b", "lessThan": "d6c8b3ebdcdb12b59ad4212acb137cc56cae453d", "versionType": "git"}, {"status": "affected", "version": "6929e650db8451a9975ac0a631ba2d6e5d1e80ba", "lessThan": "915c1254fe0788abddc31095b360e9dc98907a34", "versionType": "git"}, {"status": "affected", "version": "5ec1d1e97de134beed3a5b08235a60fc1c51af96", "lessThan": "576ec047d20b368b43c4d5db98c4f2e0f3c101ec", "versionType": "git"}], "programFiles": ["kernel/trace/trace_events_hist.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.6.141", "lessThan": "6.6.142", "versionType": "semver"}, {"status": "affected", "version": "6.12.91", "lessThan": "6.12.92", "versionType": "semver"}, {"status": "affected", "version": "6.18.33", "lessThan": "6.18.34", "versionType": "semver"}, {"status": "affected", "version": "7.0.10", "lessThan": "7.0.11", "versionType": "semver"}], "programFiles": ["kernel/trace/trace_events_hist.c"], "defaultStatus": "unaffected"}]}], "published": "2026-07-19T16:17:42.877", "references": [{"url": "https://git.kernel.org/stable/c/0402a1d3ddec565132867337ed44514a09d84728", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/37377b39ff86dacbc533275c1155210d4fd5dc91", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/576ec047d20b368b43c4d5db98c4f2e0f3c101ec", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/915c1254fe0788abddc31095b360e9dc98907a34", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/be4e99038c1603fa6b329d8ee3e364825e17c353", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d6c8b3ebdcdb12b59ad4212acb137cc56cae453d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e3f5d42cdc2f167719564693675f1eead81378ea", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e91687643c440ca3997d67646e6f80b92edc6703", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Avoid NULL return from hist_field_name() on truncation\n\nhist_field_name() returns \"\" everywhere except the fully-qualified\nVAR_REF/EXPR case, where snprintf() truncation returns NULL early\nand bypasses the bottom NULL->\"\" guard. Callers don't expect NULL:\nstrcat(expr, hist_field_name(field, 0)) at trace_events_hist.c:1758\nand the strcmp() in the sort-key match loop at :4804 both deref it.\n\nsystem and event_name are bounded by MAX_EVENT_NAME_LEN, but the\nfield name on a VAR_REF is kstrdup'd from a histogram variable\nname parsed out of the trigger string and has no length cap, so\na long enough var name in a fully qualified reference can reach\nthe truncation path.\n\nKeep the length check but leave field_name as \"\" on overflow."}], "lastModified": "2026-10-13T15:23:52.833", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:6.6.141:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2B9488D5-CC67-468F-9DE1-5597CC8EDEB1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12.91:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "18F876D2-863A-4864-9B1F-63E0EB11D076"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.18.33:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D121C8A-7E04-48D9-9107-20F776371EF4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0.10:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8B9C50B1-4501-41E5-B0EA-6A66F3B343AE"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}