{"id":"CVE-2025-21761","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nopenvswitch: use RCU protection in ovs_vport_cmd_fill_info()\n\novs_vport_cmd_fill_info() can be called without RTNL or RCU.\n\nUse RCU protection and dev_net_rcu() to avoi…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nopenvswitch: use RCU protection in ovs_vport_cmd_fill_info()\n\novs_vport_cmd_fill_info() can be called without RTNL or RCU.\n\nUse RCU protection and dev_net_rcu() to avoi…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 4.15, < 5.4.291","linux_kernel >= 5.5, < 5.10.235","linux_kernel >= 5.11, < 5.15.179","linux_kernel >= 5.16, < 6.1.129","linux_kernel >= 6.2, < 6.6.79","linux_kernel >= 6.7, < 6.12.16","linux_kernel >= 6.13, < 6.13.4","linux_kernel = 6.14"],"patched":["linux_kernel 6.13.4"],"published":"2025-02-27","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:17:33.177","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-21761","references":[{"url":"https://git.kernel.org/stable/c/5828937742af74666192835d657095d95c53dbd0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2da","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a8816b3f1f151373fd30f1996f00480126c8bb11","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a884f57600e463f69d7b279c4598b865260b62a1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e85a25d1a9985645e796039e843d1de581d2de1e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00261,"epssPercentile":0.1773,"ingestedAt":"2026-10-15T03:30:12.794Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2025-02-27T17:57:35.920303Z"},"slug":"CVE-2025-21761","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nopenvswitch: use RCU protection in ovs_vport_cmd_fill_info()\n\novs_vport_cmd_fill_info() can be called without RTNL or RCU.\n\nUse RCU protection and dev_net_rcu() to avoid potential UAF.\n\n## Affected\n\n- `linux_kernel >= 4.15, < 5.4.291`\n- `linux_kernel >= 5.5, < 5.10.235`\n- `linux_kernel >= 5.11, < 5.15.179`\n- `linux_kernel >= 5.16, < 6.1.129`\n- `linux_kernel >= 6.2, < 6.6.79`\n- `linux_kernel >= 6.7, < 6.12.16`\n- `linux_kernel >= 6.13, < 6.13.4`\n- `linux_kernel = 6.14`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.13.4`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}