NVD / CVE Program· CNA Linux

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

HighCVSS 7.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 31/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 5180561afff8e0f029073c8c8117c95c6512d1f9, 5f1e1573bf103303944fd7225559de5d8297539c, 68c173ea138b66d7dd1fd980c9bc578a18e11884; azl3 kernel 6.6.92.2-2 on Azure Linux 3.0 6.6.96.1-1; azl3 kernel 6.6.96.1-1 on Azure Linux 3.0 6.6.96.1-1.

Low priority for now. Upgrade to Linux Linux 5180561afff8e0f029073c8c8117c95c6512d1f9, 5f1e1573bf103303944fd7225559de5d8297539c, 68c173ea138b66d7dd1fd980c9bc578a18e11884; azl3 kernel 6.6.92.2-2 on Azure Linux 3.0 6.6.96.1-1; azl3 kernel 6.6.96.1-1 on Azure Linux 3.0 6.6.96.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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().

Memory safety

Published: Jul 4, 2025
Updated: Oct 15, 2026
EPSS: 0.2% · 10th percentile
CWE: CWE-416

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 7.8
CNA · Linux: 7.8; agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel
debian	debian linux	cpe:2.3:o:debian:debian_linux

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

Linux Linux
- 3.1affected
- b34a6b1da371ed8af1221459a18c67970f7e3d53 and later · before 5f1e1573bf103303944fd7225559de5d8297539caffected · git
- b34a6b1da371ed8af1221459a18c67970f7e3d53 and later · before b968ba8bfd9f90914957bbbd815413bf6a98eca7affected · git
- b34a6b1da371ed8af1221459a18c67970f7e3d53 and later · before 74bc813d11c30e28fc5261dc877cca662ccfac68affected · git
- b34a6b1da371ed8af1221459a18c67970f7e3d53 and later · before 78297d53d3878d43c1d627d20cd09f611fa4b91daffected · git
- b34a6b1da371ed8af1221459a18c67970f7e3d53 and later · before 5180561afff8e0f029073c8c8117c95c6512d1f9affected · git
- b34a6b1da371ed8af1221459a18c67970f7e3d53 and later · before 68c173ea138b66d7dd1fd980c9bc578a18e11884affected · git
- b34a6b1da371ed8af1221459a18c67970f7e3d53 and later · before b0b6bf90ce2699a574b3683e22c44d0dcdd7a057affected · git
- b34a6b1da371ed8af1221459a18c67970f7e3d53 and later · before d66adabe91803ef34a8b90613c81267b5ded1472affected · git
- before 3.1not affected · semver

Affected versions · NVD (8)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

debian debian linux11.0
linux linux kernel5.5 and later · before 5.10.239
linux linux kernel5.11 and later · before 5.15.186
linux linux kernel5.16 and later · before 6.1.142
linux linux kernel3.1 and later · before 5.4.295
linux linux kernel6.7 and later · before 6.12.35
linux linux kernel6.13 and later · before 6.15.4
linux linux kernel6.2 and later · before 6.6.95

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 6.1.147-1	6.1.147-1
Debian:13	linux	before 6.12.35-1	6.12.35-1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS	kernel-64kb	before 5.14.21-150400.24.173.1	5.14.21-150400.24.173.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS	kernel-docs	before 5.14.21-150400.24.173.1	5.14.21-150400.24.173.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS	kernel-obs-build	before 5.14.21-150400.24.173.1	5.14.21-150400.24.173.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS	kernel-source	before 5.14.21-150400.24.173.1	5.14.21-150400.24.173.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS	kernel-syms	before 5.14.21-150400.24.173.1	5.14.21-150400.24.173.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	kernel-64kb	before 5.14.21-150500.55.116.1	5.14.21-150500.55.116.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	kernel-docs	before 5.14.21-150500.55.116.1	5.14.21-150500.55.116.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	kernel-obs-build	before 5.14.21-150500.55.116.1	5.14.21-150500.55.116.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	kernel-syms	before 5.14.21-150500.55.116.1	5.14.21-150500.55.116.1
SUSE:Linux Enterprise Live Patching 12 SP5	kgraft-patch-SLE12-SP5_Update_60	before 15-2.1	15-2.1
SUSE:Linux Enterprise Live Patching 12 SP5	kgraft-patch-SLE12-SP5_Update_62	before 14-2.1	14-2.1
SUSE:Linux Enterprise Live Patching 12 SP5	kgraft-patch-SLE12-SP5_Update_68	before 4-2.1	4-2.1
SUSE:Linux Enterprise Live Patching 12 SP5	kgraft-patch-SLE12-SP5_Update_70	before 3-2.1	3-2.1
SUSE:Linux Enterprise Live Patching 15 SP3	kernel-default	before 5.3.18-150300.59.215.1	5.3.18-150300.59.215.1
SUSE:Linux Enterprise Live Patching 15 SP3	kernel-livepatch-SLE15-SP3_Update_47	before 17-150300.2.1	17-150300.2.1
SUSE:Linux Enterprise Live Patching 15 SP3	kernel-livepatch-SLE15-SP3_Update_49	before 15-150300.2.1	15-150300.2.1
SUSE:Linux Enterprise Live Patching 15 SP3	kernel-livepatch-SLE15-SP3_Update_50	before 13-150300.2.1	13-150300.2.1
SUSE:Linux Enterprise Live Patching 15 SP3	kernel-livepatch-SLE15-SP3_Update_51	before 11-150300.2.1	11-150300.2.1
SUSE:Linux Enterprise Live Patching 15 SP3	kernel-livepatch-SLE15-SP3_Update_54	before 7-150300.2.1	7-150300.2.1
SUSE:Linux Enterprise Live Patching 15 SP3	kernel-livepatch-SLE15-SP3_Update_56	before 5-150300.2.1	5-150300.2.1
SUSE:Linux Enterprise Live Patching 15 SP3	kernel-livepatch-SLE15-SP3_Update_57	before 5-150300.2.1	5-150300.2.1
SUSE:Linux Enterprise Live Patching 15 SP3	kernel-livepatch-SLE15-SP3_Update_58	before 4-150300.2.1	4-150300.2.1

+85

Same product

linux: all records

Other highest-scoring records for the same primary product.

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Published before and after this one in the same product

← EarlierCVE-2025-38209Jul 4, 2025 · nvme-tcp: remove tag set when second admin queue config fails
31Monitor
← EarlierCVE-2025-38210Jul 4, 2025 · configfs-tsm-report: Fix NULL dereference of tsm_ops
22Monitor
Later →CVE-2025-38214Jul 4, 2025 · fbdev: Fix fb_set_var to prevent null-ptr-deref in fb_videomode_to_var
22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Linux Linux	5180561afff8e0f029073c8c8117c95c6512d1f9	Vendor (CNA)
Linux Linux	5f1e1573bf103303944fd7225559de5d8297539c	Vendor (CNA)
Linux Linux	68c173ea138b66d7dd1fd980c9bc578a18e11884	Vendor (CNA)
Linux Linux	74bc813d11c30e28fc5261dc877cca662ccfac68	Vendor (CNA)
Linux Linux	78297d53d3878d43c1d627d20cd09f611fa4b91d	Vendor (CNA)
Linux Linux	b0b6bf90ce2699a574b3683e22c44d0dcdd7a057	Vendor (CNA)
Linux Linux	b968ba8bfd9f90914957bbbd815413bf6a98eca7	Vendor (CNA)
Linux Linux	d66adabe91803ef34a8b90613c81267b5ded1472	Vendor (CNA)
azl3 kernel 6.6.92.2-2 on Azure Linux 3.0	6.6.96.1-1 · CBL-Mariner Releases	Microsoft (MSRC)
azl3 kernel 6.6.96.1-1 on Azure Linux 3.0	6.6.96.1-1 · CBL-Mariner Releases	Microsoft (MSRC)
debian:linux	6.1.147-1 · Debian:12	Package registry (OSV)
suse:kernel-64kb	5.14.21-150500.55.116.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	Package registry (OSV)
suse:kernel-default	5.14.21-150500.55.116.1 · SUSE:Linux Enterprise Micro 5.5	Package registry (OSV)
suse:kernel-default-base	5.14.21-150500.55.116.1.150500.6.55.1 · SUSE:Linux Enterprise Micro 5.5	Package registry (OSV)
suse:kernel-docs	5.14.21-150500.55.116.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	Package registry (OSV)
suse:kernel-livepatch-SLE15-SP3_Update_60	1-150300.7.3.1 · SUSE:Linux Enterprise Live Patching 15 SP3	Package registry (OSV)
suse:kernel-livepatch-SLE15-SP4_Update_43	1-150400.9.3.1 · SUSE:Linux Enterprise Live Patching 15 SP4	Package registry (OSV)
suse:kernel-livepatch-SLE15-SP5_Update_29	1-150500.11.3.1 · SUSE:Linux Enterprise Live Patching 15 SP5	Package registry (OSV)
suse:kernel-obs-build	5.14.21-150500.55.116.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	Package registry (OSV)
suse:kernel-preempt	5.3.18-150300.59.215.1 · SUSE:Linux Enterprise Server 15 SP3-LTSS	Package registry (OSV)
suse:kernel-source	5.14.21-150500.55.116.1 · SUSE:Linux Enterprise Micro 5.5	Package registry (OSV)
suse:kernel-syms	5.14.21-150500.55.116.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS	Package registry (OSV)
suse:kernel-zfcpdump	5.14.21-150500.55.116.1 · SUSE:Linux Enterprise Server 15 SP5-LTSS	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log (2)

SSVC exploitation— → noneOct 15, 2026, 11:07 PM UTC
Fix✗ → ✓Sep 28, 2026, 10:08 PM UTC

For records you follow, these changes also arrive as notifications. →

References

git.kernel.org/stable/c/5180561afff8e0f029073c8c8117c95c6512d1f9

Show all references (10 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records