NVD / CVE Program· CNA Linux

CVE-2024-46740: binder: fix UAF caused by offsets overwrite

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: 0.28% (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 109e845c1184c9f786d41516348ba3efd9112792, 1f33d9f1d9ac3f0129f8508925000900c2fe5bb0, 3a8154bb4ab4a01390a3abf1e6afac296e037da4; Azure Linux 3.0 ARM 6.6.51.1-5; Azure Linux 3.0 x64 6.6.51.1-5.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 109e845c1184c9f786d41516348ba3efd9112792, 1f33d9f1d9ac3f0129f8508925000900c2fe5bb0, 3a8154bb4ab4a01390a3abf1e6afac296e037da4; Azure Linux 3.0 ARM 6.6.51.1-5; Azure Linux 3.0 x64 6.6.51.1-5 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: binder: fix UAF caused by offsets overwrite Binder objects are processed and copied individually into the target buffer during transactions. Any raw data in-between these objects is copied as well. However, this raw data copy lacks an out-of-bounds check. If the raw data exceeds the data section size then the copy overwrites the offsets section. This eventually triggers an error that attempts to unwind the processed objects. However, at this point the offsets used to index these objects are now corrupted. Unwinding with corrupted offsets can result in decrements of arbitrary nodes and lead to their premature release. Other users of such nodes are left with a dangling pointer triggering a use-after-free. This issue is made evident by the following KASAN report (trimmed): ================================================================== BUG: KASAN: slab-use-after-free in _raw_spin_lock+0xe4/0x19c Write of size 4 at addr ffff47fc91598f04 by task binder-util/743 CPU: 9 UID: 0 PID: 743 Comm: binder-util Not tainted 6.11.0-rc4 #1 Hardware name: linux,dummy-virt (DT) Call trace: _raw_spin_lock+0xe4/0x19c binder_free_buf+0x128/0x434 binder_thread_write+0x8a4/0x3260 binder_ioctl+0x18f0/0x258c [...] Allocated by task 743: __kmalloc_cache_noprof+0x110/0x270 binder_new_node+0x50/0x700 binder_transaction+0x413c/0x6da8 binder_thread_write+0x978/0x3260 binder_ioctl+0x18f0/0x258c [...] Freed by task 745: kfree+0xbc/0x208 binder_thread_read+0x1c5c/0x37d4 binder_ioctl+0x16d8/0x258c [...] ================================================================== To avoid this issue, let's check that the raw data copy is within the boundaries of the data section.

HighCVSS 7.8 · v3.1—No exploit Fix available

Memory safety

BDU:2024-08184

Published: Sep 18, 2024
Updated: Aug 5, 2026
EPSS: 0.2% · 21th percentile
CWE: CWE-416

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 · 0.2%

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

Affected versions

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

linux linux kernel5.4.226 and later · before 5.4.284
linux linux kernel5.10.157 and later · before 5.10.226
linux linux kernel5.15.17 and later · before 5.15.167
linux linux kernel5.17 and later · before 6.1.110
linux linux kernel6.2 and later · before 6.6.51
linux linux kernel6.7 and later · before 6.10.10
linux linux kernel6.11

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
- 66e12f5b3a9733f941893a00753b10498724607d, 5.17affected
- c056a6ba35e00ae943e377eb09abd77a6915b31a and later · before 5a32bfd23022ffa7e152f273fa3fa29befb7d929affected · git
- 23e9d815fad84c1bee3742a8de4bd39510435362 and later · before 3a8154bb4ab4a01390a3abf1e6afac296e037da4affected · git
- 7a9ad4aceb0226b391c9d3b8e4ac2e7d438b6bde and later · before eef79854a04feac5b861f94d7b19cbbe79874117affected · git
- 6d98eb95b450a75adb4516a1d33652dc78d2b20c and later · before 4f79e0b80dc69bd5eaaed70f0df1b558728b4e59affected · git
- 6d98eb95b450a75adb4516a1d33652dc78d2b20c and later · before 1f33d9f1d9ac3f0129f8508925000900c2fe5bb0affected · git
- 6d98eb95b450a75adb4516a1d33652dc78d2b20c and later · before 109e845c1184c9f786d41516348ba3efd9112792affected · git
- 6d98eb95b450a75adb4516a1d33652dc78d2b20c and later · before 4df153652cc46545722879415937582028c18af5affected · git
- 5.4.226 and later · before 5.4.284affected · semver
- 5.10.157 and later · before 5.10.226affected · semver

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 6.1.112-1	6.1.112-1
Debian:13	linux	before 6.10.11-1	6.10.11-1

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-2024-46738Sep 18, 2024 · VMCI: Fix use-after-free when removing resource in vmci_resource_remove()
31Monitor
← EarlierCVE-2024-46739Sep 18, 2024 · uio_hv_generic: Fix kernel NULL pointer dereference in hv_uio_rescind
22Monitor
Later →CVE-2024-46741Sep 18, 2024 · misc: fastrpc: Fix double free of 'buf' in error path
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	109e845c1184c9f786d41516348ba3efd9112792	Vendor (CNA)
Linux Linux	1f33d9f1d9ac3f0129f8508925000900c2fe5bb0	Vendor (CNA)
Linux Linux	3a8154bb4ab4a01390a3abf1e6afac296e037da4	Vendor (CNA)
Linux Linux	4df153652cc46545722879415937582028c18af5	Vendor (CNA)
Linux Linux	4f79e0b80dc69bd5eaaed70f0df1b558728b4e59	Vendor (CNA)
Linux Linux	5.10.226	Vendor (CNA)
Linux Linux	5.15.167	Vendor (CNA)
Linux Linux	5.17	Vendor (CNA)
Linux Linux	5.4.284	Vendor (CNA)
Linux Linux	5a32bfd23022ffa7e152f273fa3fa29befb7d929	Vendor (CNA)
Linux Linux	eef79854a04feac5b861f94d7b19cbbe79874117	Vendor (CNA)
Azure Linux 3.0 ARM	6.6.51.1-5 · kernel	Microsoft (MSRC)
Azure Linux 3.0 x64	6.6.51.1-5 · kernel	Microsoft (MSRC)
CBL Mariner 2.0 ARM	5.15.167.1-1 · kernel	Microsoft (MSRC)
CBL Mariner 2.0 x64	5.15.167.1-1 · kernel	Microsoft (MSRC)
debian:linux	6.1.112-1 · 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-24-1498 · Sep 19, 2024(Linux Kernel Güvenlik Bildirimi)

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.
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

Fix✗ → ✓Sep 28, 2026, 10:09 PM UTC

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

References

git.kernel.org/stable/c/109e845c1184c9f786d41516348ba3efd9112792

Show all references (8 more)

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

All records