NVD / CVE Program· CNA Linux

CVE-2024-41012: filelock: Remove locks reliably when fcntl/close race is detected

Noroxi assessment

Priority: Monitor (action score 25/100)

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: 0.23% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
Fixed version: Linux Linux 3cad1bc010416c6dd780643476bc59ed742436b9, 52c87ab18c76c14d7209646ccb3283b3f5d87b22, 5661b9c7ec189406c2dde00837aaa4672efb6240.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 3cad1bc010416c6dd780643476bc59ed742436b9, 52c87ab18c76c14d7209646ccb3283b3f5d87b22, 5661b9c7ec189406c2dde00837aaa4672efb6240 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: filelock: Remove locks reliably when fcntl/close race is detected When fcntl_setlk() races with close(), it removes the created lock with do_lock_file_wait(). However, LSMs can allow the first do_lock_file_wait() that created the lock while denying the second do_lock_file_wait() that tries to remove the lock. Separately, posix_lock_file() could also fail to remove a lock due to GFP_KERNEL allocation failure (when splitting a range in the middle). After the bug has been triggered, use-after-free reads will occur in lock_get_status() when userspace reads /proc/locks. This can likely be used to read arbitrary kernel memory, but can't corrupt kernel memory. Fix it by calling locks_remove_posix() instead, which is designed to reliably get rid of POSIX locks associated with the given file and files_struct and is also used by filp_flush().

MediumCVSS 6.3 · v3.1—No exploit Fix available

Memory safety

Published: Jul 23, 2024
Updated: Aug 5, 2026
EPSS: 0.2% · 13th percentile
CWE: CWE-416

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 25 / 40 · 6.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 6.3
CNA · Linux: 7.8; 1.5 point gap

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

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

Affected versions

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

linux linux kernel2.6.13 and later · before 4.19.319
linux linux kernel4.20 and later · before 5.4.281
linux linux kernel5.5 and later · before 5.10.223
linux linux kernel5.11 and later · before 5.15.164
linux linux kernel5.16 and later · before 6.1.101
linux linux kernel6.2 and later · before 6.6.42
linux linux kernel6.7 and later · before 6.9.9
linux linux kernel6.10

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
- 2.6.13affected
- c293621bbf678a3d85e3ed721c3921c8a670610d and later · before d30ff33040834c3b9eee29740acd92f9c7ba2250affected · git
- c293621bbf678a3d85e3ed721c3921c8a670610d and later · before dc2ce1dfceaa0767211a9d963ddb029ab21c4235affected · git
- c293621bbf678a3d85e3ed721c3921c8a670610d and later · before 5661b9c7ec189406c2dde00837aaa4672efb6240affected · git
- c293621bbf678a3d85e3ed721c3921c8a670610d and later · before 52c87ab18c76c14d7209646ccb3283b3f5d87b22affected · git
- c293621bbf678a3d85e3ed721c3921c8a670610d and later · before ef8fc41cd6f95f9a4a3470f085aecf350569a0b3affected · git
- c293621bbf678a3d85e3ed721c3921c8a670610d and later · before 5f5d0799eb0a01d550c21b7894e26b2d9db55763affected · git
- c293621bbf678a3d85e3ed721c3921c8a670610d and later · before b6d223942c34057fdfd8f149e763fa823731b224affected · git
- c293621bbf678a3d85e3ed721c3921c8a670610d and later · before 3cad1bc010416c6dd780643476bc59ed742436b9affected · git
- before 2.6.13not affected · semver

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:11	linux	before 5.10.223-1	5.10.223-1
Debian:12	linux	before 6.1.106-1	6.1.106-1
Debian:13	linux	before 6.9.9-1	6.9.9-1

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
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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-2024-41010Jul 17, 2024 · bpf: Fix too early release of tcx_entry
22Monitor
← EarlierCVE-2024-41011Jul 18, 2024 · drm/amdkfd: don't allow mapping the MMIO HDP page with large pages
31Monitor
Later →CVE-2024-41013Jul 29, 2024 · xfs: don't walk off the end of a directory data block
28Monitor

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	3cad1bc010416c6dd780643476bc59ed742436b9	Vendor (CNA)
Linux Linux	52c87ab18c76c14d7209646ccb3283b3f5d87b22	Vendor (CNA)
Linux Linux	5661b9c7ec189406c2dde00837aaa4672efb6240	Vendor (CNA)
Linux Linux	5f5d0799eb0a01d550c21b7894e26b2d9db55763	Vendor (CNA)
Linux Linux	b6d223942c34057fdfd8f149e763fa823731b224	Vendor (CNA)
Linux Linux	d30ff33040834c3b9eee29740acd92f9c7ba2250	Vendor (CNA)
Linux Linux	dc2ce1dfceaa0767211a9d963ddb029ab21c4235	Vendor (CNA)
Linux Linux	ef8fc41cd6f95f9a4a3470f085aecf350569a0b3	Vendor (CNA)
debian:linux	6.1.106-1 · Debian:12	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.

No history yet (it accumulates with the daily EPSS job).

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.

No nightly-computed relations.

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-24-1050 · Jul 24, 2024(Linux Kernel Güncellemesi)

All national notices →

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.
Special conditions such as timing or configuration are required.

If successful

Confidentiality: high · data can be read
Integrity: none
Availability: high · the service can be disrupted

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

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

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

Fix✗ → ✓Sep 28, 2026, 10:10 PM UTC

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

References

git.kernel.org/stable/c/3cad1bc010416c6dd780643476bc59ed742436b9

Show all references (8 more)

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

All records