{"id":"CVE-2023-45898","title":"The Linux kernel before 6.5.4 has an es1 use-after-free in fs/ext4/extents_status.c, related to ext4_es_insert_extent.","summary":"The Linux kernel before 6.5.4 has an es1 use-after-free in fs/ext4/extents_status.c, related to ext4_es_insert_extent.","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 >= 6.5, < 6.5.4"],"patched":["linux_kernel 6.5.4"],"published":"2023-10-16","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:17:10.143","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-45898","references":[{"url":"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.4","label":"cve@mitre.org"},{"url":"https://github.com/torvalds/linux/commit/768d612f79822d30a1e7d132a4d4b05337ce42ec","label":"cve@mitre.org"},{"url":"https://lkml.org/lkml/2023/8/13/477","label":"cve@mitre.org"},{"url":"https://lore.kernel.org/lkml/aa03f191-445c-0d2e-d6d7-0a3208d7df7a%40huawei.com/T/","label":"cve@mitre.org"},{"url":"https://www.spinics.net/lists/stable-commits/msg317086.html","label":"cve@mitre.org"},{"url":"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.4","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/torvalds/linux/commit/768d612f79822d30a1e7d132a4d4b05337ce42ec","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lkml.org/lkml/2023/8/13/477","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lore.kernel.org/lkml/aa03f191-445c-0d2e-d6d7-0a3208d7df7a%40huawei.com/T/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.spinics.net/lists/stable-commits/msg317086.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-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00293,"epssPercentile":0.21763,"ingestedAt":"2026-10-15T03:30:12.630Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2025-04-23T13:26:18.979257Z"},"slug":"CVE-2023-45898","body":"## Overview\n\nThe Linux kernel before 6.5.4 has an es1 use-after-free in fs/ext4/extents_status.c, related to ext4_es_insert_extent.\n\n## Affected\n\n- `linux_kernel >= 6.5, < 6.5.4`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.5.4`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}