🛡️ AZL-64776 — kernel

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2025-38212 affecting package kernel for versions less than 6.6.96.1-1

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().

Affected software

AZL-64776 is recorded against 1 package.

  • kernel (fixed in 6.6.96.1-1)

Timeline and source

Published on 4 July 2025 and last revised on 21 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-07-04
Updated 2026-08-12
Modified 2026-04-21
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel — 6.6.96.1-1

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