{"id":"CVE-2026-97522","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix bad accounting in __mptcp_subflow_push_pending()\n\nIf __subflow_push_pending() errors out we should avoid updating the\ncopied byte counters, to avoid mismatch…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix bad accounting in __mptcp_subflow_push_pending()\n\nIf __subflow_push_pending() errors out we should avoid updating the\ncopied byte counters, to avoid mismatch…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-252"],"vendor":"Linux","product":"Linux","affected":["Linux >= 0fa1b3783a17d75a4aa1651a18ede041ffca5750 < ddbf9f03c1cc7d5b86eebe7c2beea0db4286d354","Linux >= 0fa1b3783a17d75a4aa1651a18ede041ffca5750 < 9781fa35d9f7a87a83115acd3a88bc9ce35b5407","Linux >= 0fa1b3783a17d75a4aa1651a18ede041ffca5750 < a0a64525f3414268ed4b1945a1dc690aa974dd4f","Linux >= 0fa1b3783a17d75a4aa1651a18ede041ffca5750 < dc054821e639a2e14f1419436612db70b6af45fc","Linux >= 0fa1b3783a17d75a4aa1651a18ede041ffca5750 < f3ef03357396d4b147d8e76c75fb612c2f264ffc","Linux 6.6"],"published":"2026-09-25","updated":"2026-10-03","sourceUpdated":"2026-10-03T11:18:01.053","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97522","references":[{"url":"https://git.kernel.org/stable/c/9781fa35d9f7a87a83115acd3a88bc9ce35b5407","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a0a64525f3414268ed4b1945a1dc690aa974dd4f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dc054821e639a2e14f1419436612db70b6af45fc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ddbf9f03c1cc7d5b86eebe7c2beea0db4286d354","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f3ef03357396d4b147d8e76c75fb612c2f264ffc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97522.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-97522"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541176"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97522"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97522"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97522.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00206,"epssPercentile":0.10472,"cvssSource":"vendor","ingestedAt":"2026-09-25T11:06:38.927Z","slug":"CVE-2026-97522","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix bad accounting in __mptcp_subflow_push_pending()\n\nIf __subflow_push_pending() errors out we should avoid updating the\ncopied byte counters, to avoid mismatch push call later on.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97522.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":212527,"id":"CVE-2026-97522","ts":1790668200260,"field":"cvss","old":null,"new":"5.5"},{"seq":212526,"id":"CVE-2026-97522","ts":1790668200260,"field":"severity","old":"none","new":"medium"}]}