High 7.8Published Jul 4, 2025

CVE-2025-38212ipc: fix to protect IPCS lookups using RCU

Updated under an hour ago (Oct 27, 2026, 11:23 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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().

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from b34a6b1da371ed8af1221459a18c67970f7e3d53 before 5f1e1573bf103303944fd7225559de5d8297539c; from b34a6b1da371ed8af1221459a18c67970f7e3d53 before b968ba8bfd9f90914957bbbd815413bf6a98eca7; from b34a6b1da371ed8af1221459a18c67970f7e3d53 before 74bc813d11c30e28fc5261dc877cca662ccfac68; from b34a6b1da371ed8af1221459a18c67970f7e3d53 before 78297d53d3878d43c1d627d20cd09f611fa4b91d; from b34a6b1da371ed8af1221459a18c67970f7e3d53 before 5180561afff8e0f029073c8c8117c95c6512d1f9; from b34a6b1da371ed8af1221459a18c67970f7e3d53 before 68c173ea138b66d7dd1fd980c9bc578a18e11884; from b34a6b1da371ed8af1221459a18c67970f7e3d53 before b0b6bf90ce2699a574b3683e22c44d0dcdd7a057; from b34a6b1da371ed8af1221459a18c67970f7e3d53 before d66adabe91803ef34a8b90613c81267b5ded1472	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP
linux linux_kernel linux:linux_kernel	from 3.1 before 5.4.295; from 5.5 before 5.10.239; from 5.11 before 5.15.186; from 5.16 before 6.1.142; from 6.2 before 6.6.95; from 6.7 before 6.12.35; from 6.13 before 6.15.4	NVD
debian debian_linux debian:debian_linux	11.0	NVD

References

References

https://git.kernel.org/stable/c/5f1e1573bf103303944fd7225559de5d8297539c	patch
https://git.kernel.org/stable/c/b968ba8bfd9f90914957bbbd815413bf6a98eca7	patch
https://git.kernel.org/stable/c/74bc813d11c30e28fc5261dc877cca662ccfac68	patch
https://git.kernel.org/stable/c/78297d53d3878d43c1d627d20cd09f611fa4b91d	patch
https://git.kernel.org/stable/c/5180561afff8e0f029073c8c8117c95c6512d1f9	patch
https://git.kernel.org/stable/c/68c173ea138b66d7dd1fd980c9bc578a18e11884	patch
https://git.kernel.org/stable/c/b0b6bf90ce2699a574b3683e22c44d0dcdd7a057	patch
https://git.kernel.org/stable/c/d66adabe91803ef34a8b90613c81267b5ded1472	patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html	mailing-list, third-party-advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html	mailing-list, third-party-advisory
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.