CVE - CVE-2025-38212

CVE-ID
CVE-2025-38212	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: ipc: fix to protect IPCS lookups using RCU syzbot reported that it discovered a use-after-free vulnerability, [0] [0]: https://lore.kernel.org/all/67af13f8.050a0220.21dd3.0038.GAE@google.com/ idr_for_each() is protected by rwsem, but this is not enough. If it is not protected by RCU read-critical region, when idr_for_each() calls radix_tree_node_free() through call_rcu() to free the radix_tree_node structure, the node will be freed immediately, and when reading the next node in radix_tree_for_each_slot(), the already freed memory may be read. Therefore, we need to add code to make sure that idr_for_each() is protected within the RCU read-critical region when we call it in shm_destroy_orphaned().
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/5180561afff8e0f029073c8c8117c95c6512d1f9 URL:https://git.kernel.org/stable/c/5180561afff8e0f029073c8c8117c95c6512d1f9 MISC:https://git.kernel.org/stable/c/5f1e1573bf103303944fd7225559de5d8297539c URL:https://git.kernel.org/stable/c/5f1e1573bf103303944fd7225559de5d8297539c MISC:https://git.kernel.org/stable/c/68c173ea138b66d7dd1fd980c9bc578a18e11884 URL:https://git.kernel.org/stable/c/68c173ea138b66d7dd1fd980c9bc578a18e11884 MISC:https://git.kernel.org/stable/c/74bc813d11c30e28fc5261dc877cca662ccfac68 URL:https://git.kernel.org/stable/c/74bc813d11c30e28fc5261dc877cca662ccfac68 MISC:https://git.kernel.org/stable/c/78297d53d3878d43c1d627d20cd09f611fa4b91d URL:https://git.kernel.org/stable/c/78297d53d3878d43c1d627d20cd09f611fa4b91d MISC:https://git.kernel.org/stable/c/b0b6bf90ce2699a574b3683e22c44d0dcdd7a057 URL:https://git.kernel.org/stable/c/b0b6bf90ce2699a574b3683e22c44d0dcdd7a057 MISC:https://git.kernel.org/stable/c/b968ba8bfd9f90914957bbbd815413bf6a98eca7 URL:https://git.kernel.org/stable/c/b968ba8bfd9f90914957bbbd815413bf6a98eca7 MISC:https://git.kernel.org/stable/c/d66adabe91803ef34a8b90613c81267b5ded1472 URL:https://git.kernel.org/stable/c/d66adabe91803ef34a8b90613c81267b5ded1472
Assigning CNA
kernel.org
Date Record Created
20250416	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
This is an record on the CVE List, which provides common identifiers for publicly known cybersecurity vulnerabilities.
Search CVE Using Keywords: You can also search by reference using the CVE Reference Maps.
For More Information: CVE Request Web Form (select "Other" from dropdown)