Vulnerability Monitor

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CVE-2025-38212

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/[email protected]/ 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().

Published

2025-07-04T14:15:29.473

Last Modified

2025-12-18T21:11:01.400

Status

Analyzed

Source

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Severity

CVSSv3.1: 7.8 (HIGH)

Weaknesses
  • Type: Primary
    CWE-416
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System linux linux_kernel < 5.4.295 Yes
Operating System linux linux_kernel < 5.10.239 Yes
Operating System linux linux_kernel < 5.15.186 Yes
Operating System linux linux_kernel < 6.1.142 Yes
Operating System linux linux_kernel < 6.6.95 Yes
Operating System linux linux_kernel < 6.12.35 Yes
Operating System linux linux_kernel < 6.15.4 Yes
Operating System debian debian_linux 11.0 Yes
References