{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/netfilter/nft_counter.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "e13194e60217db02c2e7202375d9e5951267d87b", "status": "affected", "version": "fb1adb05ea87b6149e65a31e511756c4f470d0cd", "versionType": "git"}, {"lessThan": "de6601f1374fab124cd9276df6671f64d940ceb4", "status": "affected", "version": "f123293db16dcd0cd81b246ae60e6362f0025d0a", "versionType": "git"}, {"lessThan": "48cf7918d10c66cb6b05226fa3fa5daf0c891089", "status": "affected", "version": "3cb03edb4de33fd04c4ea55f47397b96a8657c53", "versionType": "git"}, {"lessThan": "cd968dcdec6aee79a2d399e4f6e0eca63c3b45e1", "status": "affected", "version": "3cb03edb4de33fd04c4ea55f47397b96a8657c53", "versionType": "git"}, {"lessThan": "0cdc6d5a26f2d1f7f15a43526841b679445c32e2", "status": "affected", "version": "3cb03edb4de33fd04c4ea55f47397b96a8657c53", "versionType": "git"}, {"lessThan": "779c60a5190c42689534172f4b49e927c9959e4e", "status": "affected", "version": "3cb03edb4de33fd04c4ea55f47397b96a8657c53", "versionType": "git"}, {"lessThan": "6.1.188", "status": "affected", "version": "6.1.107", "versionType": "semver"}, {"lessThan": "6.6.157", "status": "affected", "version": "6.6.48", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/netfilter/nft_counter.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.7"}, {"lessThan": "6.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "6.19.*", "status": "unaffected", "version": "6.19.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8A1E4A4D-E736-4034-B734-953CD5D22F1D", "versionEndExcluding": "6.2", "versionStartIncluding": "6.1.107", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B3E44F97-A592-4211-A207-407DFC22549C", "versionEndExcluding": "6.19.4", "versionStartIncluding": "6.6.48", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_counter: serialize reset with spinlock\n\nAdd a global static spinlock to serialize counter fetch+reset\noperations, preventing concurrent dump-and-reset from underrunning\nvalues.\n\nThe lock is taken before fetching the total so that two parallel\nresets cannot both read the same counter values and then both\nsubtract them.\n\nA global lock is used for simplicity since resets are infrequent.\nIf this becomes a bottleneck, it can be replaced with a per-net\nlock later."}], "id": "CVE-2026-45897", "lastModified": "2026-11-06T16:18:49.970", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-45897", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:43:51.169737Z", "version": "2.0.3"}}]}, "published": "2026-05-27T14:17:03.977", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0cdc6d5a26f2d1f7f15a43526841b679445c32e2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/48cf7918d10c66cb6b05226fa3fa5daf0c891089"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/779c60a5190c42689534172f4b49e927c9959e4e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cd968dcdec6aee79a2d399e4f6e0eca63c3b45e1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/de6601f1374fab124cd9276df6671f64d940ceb4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e13194e60217db02c2e7202375d9e5951267d87b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}