NVD / CVE Program· CNA Linux

CVE-2024-38541: of: module: add buffer overflow check in of_modalias()

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: 0.90% (FIRST EPSS); higher than 59.5% of all records.
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.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: Linux Linux 0b0d5701a8bf02f8fee037e81aacf6746558bfd6, 46795440ef2b4ac919d09310a69a404c5bc90a88, 5d59fd637a8af42b211a92b2edb2474325b4d488.

Low priority for now. Upgrade to Linux Linux 0b0d5701a8bf02f8fee037e81aacf6746558bfd6, 46795440ef2b4ac919d09310a69a404c5bc90a88, 5d59fd637a8af42b211a92b2edb2474325b4d488 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: of: module: add buffer overflow check in of_modalias() In of_modalias(), if the buffer happens to be too small even for the 1st snprintf() call, the len parameter will become negative and str parameter (if not NULL initially) will point beyond the buffer's end. Add the buffer overflow check after the 1st snprintf() call and fix such check after the strlen() call (accounting for the terminating NUL char).

HighCVSS 7.8 · v3.1—No exploit Fix available

Memory safety

Published: Jun 19, 2024
Updated: Aug 5, 2026
EPSS: 0.9% · 59th percentile
CWE: CWE-120

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.9%

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · Linux: 7.8; NVD has not scored this yet; the score shown is the CNA’s.

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

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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

Affected versions

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

linux linux kernel4.14 and later · before 5.4.294
linux linux kernel5.5 and later · before 5.10.238
linux linux kernel5.11 and later · before 5.15.182
linux linux kernel5.16 and later · before 6.1.136
linux linux kernel6.2 and later · before 6.6.33
linux linux kernel6.7 and later · before 6.8.12
linux linux kernel6.9 and later · before 6.9.3

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
- 4.14affected
- bc575064d688c8933a6ca51429bea9bc63628d3b and later · before 46795440ef2b4ac919d09310a69a404c5bc90a88affected · git
- bc575064d688c8933a6ca51429bea9bc63628d3b and later · before 733e62786bdf1b2b9dbb09ba2246313306503414affected · git
- bc575064d688c8933a6ca51429bea9bc63628d3b and later · before c7f24b7d94549ff4623e8f41ea4d9f5319bd8ac8affected · git
- bc575064d688c8933a6ca51429bea9bc63628d3b and later · before 5d59fd637a8af42b211a92b2edb2474325b4d488affected · git
- bc575064d688c8933a6ca51429bea9bc63628d3b and later · before 0b0d5701a8bf02f8fee037e81aacf6746558bfd6affected · git
- bc575064d688c8933a6ca51429bea9bc63628d3b and later · before ee332023adfd5882808f2dabf037b32d6ce36f9eaffected · git
- bc575064d688c8933a6ca51429bea9bc63628d3b and later · before e45b69360a63165377b30db4a1dfddd89ca18e9aaffected · git
- bc575064d688c8933a6ca51429bea9bc63628d3b and later · before cf7385cb26ac4f0ee6c7385960525ad534323252affected · git
- before 4.14not affected · semver

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
AlmaLinux:8	bpftool	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-abi-stablelists	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-core	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-cross-headers	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-debug	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-debug-core	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-debug-devel	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-debug-modules	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-debug-modules-extra	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-devel	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-doc	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-headers	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-modules	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-modules-extra	before 4.18.0-553.27.1.el8_10	4.18.0-553.27.1.el8_10
AlmaLinux:8	kernel-rt	before 4.18.0-553.27.1.rt7.368.el8_10	4.18.0-553.27.1.rt7.368.el8_10
AlmaLinux:8	kernel-rt-core	before 4.18.0-553.27.1.rt7.368.el8_10	4.18.0-553.27.1.rt7.368.el8_10
AlmaLinux:8	kernel-rt-debug	before 4.18.0-553.27.1.rt7.368.el8_10	4.18.0-553.27.1.rt7.368.el8_10
AlmaLinux:8	kernel-rt-debug-core	before 4.18.0-553.27.1.rt7.368.el8_10	4.18.0-553.27.1.rt7.368.el8_10
AlmaLinux:8	kernel-rt-debug-devel	before 4.18.0-553.27.1.rt7.368.el8_10	4.18.0-553.27.1.rt7.368.el8_10
AlmaLinux:8	kernel-rt-debug-modules	before 4.18.0-553.27.1.rt7.368.el8_10	4.18.0-553.27.1.rt7.368.el8_10
AlmaLinux:8	kernel-rt-debug-modules-extra	before 4.18.0-553.27.1.rt7.368.el8_10	4.18.0-553.27.1.rt7.368.el8_10
AlmaLinux:8	kernel-rt-devel	before 4.18.0-553.27.1.rt7.368.el8_10	4.18.0-553.27.1.rt7.368.el8_10
AlmaLinux:8	kernel-rt-modules	before 4.18.0-553.27.1.rt7.368.el8_10	4.18.0-553.27.1.rt7.368.el8_10

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
90Now
CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
89Now
CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
85Now

Published before and after this one in the same product

← EarlierCVE-2024-38539Jun 19, 2024 · RDMA/cma: Fix kmemleak in rdma_core observed during blktests nvme/rdma use siw
22Monitor
← EarlierCVE-2024-38540Jun 19, 2024 · bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq
17Monitor
Later →CVE-2024-38542Jun 19, 2024 · RDMA/mana_ib: boundary check before installing cq callbacks
31Monitor

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	0b0d5701a8bf02f8fee037e81aacf6746558bfd6	Vendor (CNA)
Linux Linux	46795440ef2b4ac919d09310a69a404c5bc90a88	Vendor (CNA)
Linux Linux	5d59fd637a8af42b211a92b2edb2474325b4d488	Vendor (CNA)
Linux Linux	733e62786bdf1b2b9dbb09ba2246313306503414	Vendor (CNA)
Linux Linux	c7f24b7d94549ff4623e8f41ea4d9f5319bd8ac8	Vendor (CNA)
Linux Linux	cf7385cb26ac4f0ee6c7385960525ad534323252	Vendor (CNA)
Linux Linux	e45b69360a63165377b30db4a1dfddd89ca18e9a	Vendor (CNA)
Linux Linux	ee332023adfd5882808f2dabf037b32d6ce36f9e	Vendor (CNA)
almalinux:bpftool	4.18.0-553.27.1.el8_10 · AlmaLinux:8	Package registry (OSV)
almalinux:kernel	4.18.0-553.27.1.el8_10 · AlmaLinux:8	Package registry (OSV)
almalinux:kernel-abi-stablelists	4.18.0-553.27.1.el8_10 · AlmaLinux:8	Package registry (OSV)
almalinux:kernel-core	4.18.0-553.27.1.el8_10 · AlmaLinux:8	Package registry (OSV)
almalinux:kernel-cross-headers	4.18.0-553.27.1.el8_10 · AlmaLinux:8	Package registry (OSV)
almalinux:kernel-debug	4.18.0-553.27.1.el8_10 · AlmaLinux:8	Package registry (OSV)
almalinux:kernel-debug-core	4.18.0-553.27.1.el8_10 · AlmaLinux:8	Package registry (OSV)
almalinux:kernel-debug-devel	4.18.0-553.27.1.el8_10 · AlmaLinux:8	Package registry (OSV)
almalinux:kernel-debug-modules	4.18.0-553.27.1.el8_10 · AlmaLinux:8	Package registry (OSV)
almalinux:kernel-debug-modules-extra	4.18.0-553.27.1.el8_10 · AlmaLinux:8	Package registry (OSV)
almalinux:kernel-devel	4.18.0-553.27.1.el8_10 · AlmaLinux:8	Package registry (OSV)
almalinux:kernel-doc	4.18.0-553.27.1.el8_10 · AlmaLinux:8	Package registry (OSV)
debian:linux	6.1.137-1 · Debian:12	Package registry (OSV)
debian:linux-6.1	6.1.137-1~deb11u1 · Debian:11	Package registry (OSV)
red hat:bpftool-debuginfo	0:7.3.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstream	Package registry (OSV)
red hat:kernel-64k-debug-debuginfo	0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstream	Package registry (OSV)
red hat:kernel-64k-debug-devel	0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstream	Package registry (OSV)
red hat:kernel-64k-debug-devel-matched	0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstream	Package registry (OSV)
red hat:kernel-64k-debuginfo	0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstream	Package registry (OSV)
red hat:kernel-64k-devel	0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstream	Package registry (OSV)
red hat:kernel-64k-devel-matched	0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstream	Package registry (OSV)
red hat:kernel-debug-debuginfo	0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstream	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.

EPSS, last 120 days-1% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2023-44466264 days apartAn issue was discovered in net/ceph/messenger_v2.c in the Linux kernel before 6.4.5.
49Plan
CVE-2023-5273529 days apartbpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself
36Monitor
CVE-2024-2692752 days apartASoC: SOF: Add some bounds checking to firmware data
33Monitor
CVE-2021-476090 days apartfirmware: arm_scpi: Fix string overflow in SCPI genpd driver
31Monitor
CVE-2024-385770 days apartrcu-tasks: Fix show_rcu_tasks_trace_gp_kthread buffer overflow
31Monitor
CVE-2024-392915 days apartdrm/amdgpu: Fix buffer size in gfx_v9_4_3_init_ cp_compute_microcode() and rlc_microcode()
31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

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-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CVSS vector

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

nvd-secondary

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

The bug in code

The whole CWE-120 class

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

Vulnerable

1char buf[256];
2memcpy(buf, pkt->data, pkt->len);

Fixed

1char buf[256];
2if (pkt->len > sizeof(buf)) {
3  return -EINVAL;
4}
5memcpy(buf, pkt->data, pkt->len);

Attack context

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

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

Fix✗ → ✓Sep 28, 2026, 10:11 PM UTC

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

References

git.kernel.org/stable/c/0b0d5701a8bf02f8fee037e81aacf6746558bfd6

Show all references (9 more)

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

All records