{"id":"CVE-2025-38212","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nipc: fix to protect IPCS lookups using RCU\n\nsyzbot reported that it discovered a use-after-free vulnerability, [0]\n\n[0]: https://lore.kernel.org/all/67af13f8.050a0220.2…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nipc: fix to protect IPCS lookups using RCU\n\nsyzbot reported that it discovered a use-after-free vulnerability, [0]\n\n[0]: https://lore.kernel.org/all/67af13f8.050a0220.2…","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 >= 3.1, < 5.4.295","linux_kernel >= 5.5, < 5.10.239","linux_kernel >= 5.11, < 5.15.186","linux_kernel >= 5.16, < 6.1.142","linux_kernel >= 6.2, < 6.6.95","linux_kernel >= 6.7, < 6.12.35","linux_kernel >= 6.13, < 6.15.4","debian_linux = 11.0"],"patched":["linux_kernel 6.15.4"],"published":"2025-07-04","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:18:35.450","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-38212","references":[{"url":"https://git.kernel.org/stable/c/5180561afff8e0f029073c8c8117c95c6512d1f9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5f1e1573bf103303944fd7225559de5d8297539c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/68c173ea138b66d7dd1fd980c9bc578a18e11884","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/74bc813d11c30e28fc5261dc877cca662ccfac68","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/78297d53d3878d43c1d627d20cd09f611fa4b91d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b0b6bf90ce2699a574b3683e22c44d0dcdd7a057","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b968ba8bfd9f90914957bbbd815413bf6a98eca7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d66adabe91803ef34a8b90613c81267b5ded1472","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-082556.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00198,"epssPercentile":0.09522,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:48:35.362340Z"},"ingestedAt":"2026-10-15T05:52:46.093Z","slug":"CVE-2025-38212","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nipc: fix to protect IPCS lookups using RCU\n\nsyzbot reported that it discovered a use-after-free vulnerability, [0]\n\n[0]: https://lore.kernel.org/all/67af13f8.050a0220.21dd3.0038.GAE@google.com/\n\nidr_for_each() is protected by rwsem, but this is not enough.  If it is\nnot protected by RCU read-critical region, when idr_for_each() calls\nradix_tree_node_free() through call_rcu() to free the radix_tree_node\nstructure, the node will be freed immediately, and when reading the next\nnode in radix_tree_for_each_slot(), the already freed memory may be read.\n\nTherefore, we need to add code to make sure that idr_for_each() is\nprotected within the RCU read-critical region when we call it in\nshm_destroy_orphaned().\n\n## Affected\n\n- `linux_kernel >= 3.1, < 5.4.295`\n- `linux_kernel >= 5.5, < 5.10.239`\n- `linux_kernel >= 5.11, < 5.15.186`\n- `linux_kernel >= 5.16, < 6.1.142`\n- `linux_kernel >= 6.2, < 6.6.95`\n- `linux_kernel >= 6.7, < 6.12.35`\n- `linux_kernel >= 6.13, < 6.15.4`\n- `debian_linux = 11.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.15.4`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}