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NVD / CVE Program· CNA Linux

CVE-2024-56746: fbdev: sh7760fb: Fix a possible memory leak in sh7760fb_alloc_mem()

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.21% (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 0d3fb3b3e9d66f7b6346e3b90bc0ff48683539ce, 29216bb390e36daeebef66abaa02d9751330252b, 3dd9df8e5f34c6fc4217a7498c1fb3c352d4afc2; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1.

Low priority for now. Upgrade to Linux Linux 0d3fb3b3e9d66f7b6346e3b90bc0ff48683539ce, 29216bb390e36daeebef66abaa02d9751330252b, 3dd9df8e5f34c6fc4217a7498c1fb3c352d4afc2; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1 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: fbdev: sh7760fb: Fix a possible memory leak in sh7760fb_alloc_mem() When information such as info->screen_base is not ready, calling sh7760fb_free_mem() does not release memory correctly. Call dma_free_coherent() instead.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Dec 29, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 12th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 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.

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.

Follow CVE-2024-56746

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

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 kernel2.6.27 and later · before 4.19.325
  • linux linux kernel4.20 and later · before 5.4.287
  • linux linux kernel5.5 and later · before 5.10.231
  • linux linux kernel5.11 and later · before 5.15.174
  • linux linux kernel5.16 and later · before 6.1.120
  • linux linux kernel6.2 and later · before 6.6.64
  • linux linux kernel6.7 and later · before 6.11.11
  • linux linux kernel6.12 and later · before 6.12.2

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

    • 2.6.27affected
    • 4a25e41831ee851c1365d8b41decc22493b18e6d and later · before 0d3fb3b3e9d66f7b6346e3b90bc0ff48683539ceaffected · git
    • 4a25e41831ee851c1365d8b41decc22493b18e6d and later · before d48cbfa90dce506030151915fa3346d67f964af4affected · git
    • 4a25e41831ee851c1365d8b41decc22493b18e6d and later · before 29216bb390e36daeebef66abaa02d9751330252baffected · git
    • 4a25e41831ee851c1365d8b41decc22493b18e6d and later · before f4fbd70e15fafe36a7583954ce189aaf5536aeecaffected · git
    • 4a25e41831ee851c1365d8b41decc22493b18e6d and later · before 40f4326ed05a3b3537556ff2a844958b9e779a98affected · git
    • 4a25e41831ee851c1365d8b41decc22493b18e6d and later · before 3dd9df8e5f34c6fc4217a7498c1fb3c352d4afc2affected · git
    • 4a25e41831ee851c1365d8b41decc22493b18e6d and later · before d10cd53e5a7fb3b7c6f83d4d9a5ea1d97a3ed9a5affected · git
    • 4a25e41831ee851c1365d8b41decc22493b18e6d and later · before bad37309c8b8bf1cfc893750df0951a804009ca0affected · git
    • 4a25e41831ee851c1365d8b41decc22493b18e6d and later · before f89d17ae2ac42931be2a0153fecbf8533280c927affected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.123-16.1.123-1
Debian:13linuxbefore 6.12.3-16.12.3-1

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
    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-2024-56744Dec 29, 2024 · f2fs: fix to avoid potential deadlock in f2fs_record_stop_reason()
    22Monitor
  • ← EarlierCVE-2024-56745Dec 29, 2024 · PCI: Fix reset_method_store() memory leak
    22Monitor
  • Later →CVE-2024-56747Dec 29, 2024 · scsi: qedi: Fix a possible memory leak in qedi_alloc_and_init_sb()
    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 / packageFixed versionSource
Linux Linux0d3fb3b3e9d66f7b6346e3b90bc0ff48683539ceVendor (CNA)
Linux Linux29216bb390e36daeebef66abaa02d9751330252bVendor (CNA)
Linux Linux3dd9df8e5f34c6fc4217a7498c1fb3c352d4afc2Vendor (CNA)
Linux Linux40f4326ed05a3b3537556ff2a844958b9e779a98Vendor (CNA)
Linux Linuxbad37309c8b8bf1cfc893750df0951a804009ca0Vendor (CNA)
Linux Linuxd10cd53e5a7fb3b7c6f83d4d9a5ea1d97a3ed9a5Vendor (CNA)
Linux Linuxd48cbfa90dce506030151915fa3346d67f964af4Vendor (CNA)
Linux Linuxf4fbd70e15fafe36a7583954ce189aaf5536aeecVendor (CNA)
Linux Linuxf89d17ae2ac42931be2a0153fecbf8533280c927Vendor (CNA)
azl3 kernel 6.6.57.1-7 on Azure Linux 3.06.6.64.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 kernel 6.6.64.2-1 on Azure Linux 3.06.6.64.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.173.1-2 on CBL Mariner 2.05.15.176.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.173.1-2 on CBL-Mariner 2.05.15.176.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.176.3-1 on CBL Mariner 2.05.15.176.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.123-1 · 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.

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).

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
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-401 · Missing Release of Memory after Effective Lifetime

CVSS vector

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

nvd-primary

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

Show all references (9 more)

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

All records