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CVE-2024-46740· NVD / CVE Program· CNA Linux

binder: fix UAF caused by offsets overwrite

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
Published
Sep 18, 2024
Updated
Aug 5, 2026
EPSS
0.3% · 19th percentile
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Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

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.

Noroxi analysis

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Affected systems

VendorProduct
linuxlinux 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.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.112-16.1.112-1
Debian:13linuxbefore 6.10.11-16.10.11-1

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  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now
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    77This week
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Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
Linux Linux109e845c1184c9f786d41516348ba3efd9112792Vendor (CNA)
Linux Linux1f33d9f1d9ac3f0129f8508925000900c2fe5bb0Vendor (CNA)
Linux Linux3a8154bb4ab4a01390a3abf1e6afac296e037da4Vendor (CNA)
Linux Linux4df153652cc46545722879415937582028c18af5Vendor (CNA)
Linux Linux4f79e0b80dc69bd5eaaed70f0df1b558728b4e59Vendor (CNA)
Linux Linux5.10.226Vendor (CNA)
Linux Linux5.15.167Vendor (CNA)
Linux Linux5.17Vendor (CNA)
Linux Linux5.4.284Vendor (CNA)
Linux Linux5a32bfd23022ffa7e152f273fa3fa29befb7d929Vendor (CNA)
Linux Linuxeef79854a04feac5b861f94d7b19cbbe79874117Vendor (CNA)
debian:linux6.1.112-1 · Debian:12Package 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

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.

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).

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.

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

Vulnerable

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

Fixed

c
lock(&dev->lock);free(dev->buf);dev->buf = NULL;unlock(&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

  1. Fix✗ → ✓

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

References

All records