Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2024-26748: usb: cdns3: fix memory double free when handle zero packet

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: 0.24% (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 1e204a8e9eb514e22a6567fb340ebb47df3f3a48, 3a2a909942b5335b7ea66366d84261b3ed5f89c8, 5fd9e45f1ebcd57181358af28506e8a661a260b3.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 1e204a8e9eb514e22a6567fb340ebb47df3f3a48, 3a2a909942b5335b7ea66366d84261b3ed5f89c8, 5fd9e45f1ebcd57181358af28506e8a661a260b3 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: usb: cdns3: fix memory double free when handle zero packet 829 if (request->complete) { 830 spin_unlock(&priv_dev->lock); 831 usb_gadget_giveback_request(&priv_ep->endpoint, 832 request); 833 spin_lock(&priv_dev->lock); 834 } 835 836 if (request->buf == priv_dev->zlp_buf) 837 cdns3_gadget_ep_free_request(&priv_ep->endpoint, request); Driver append an additional zero packet request when queue a packet, which length mod max packet size is 0. When transfer complete, run to line 831, usb_gadget_giveback_request() will free this requestion. 836 condition is true, so cdns3_gadget_ep_free_request() free this request again. Log: [ 1920.140696][ T150] BUG: KFENCE: use-after-free read in cdns3_gadget_giveback+0x134/0x2c0 [cdns3] [ 1920.140696][ T150] [ 1920.151837][ T150] Use-after-free read at 0x000000003d1cd10b (in kfence-#36): [ 1920.159082][ T150] cdns3_gadget_giveback+0x134/0x2c0 [cdns3] [ 1920.164988][ T150] cdns3_transfer_completed+0x438/0x5f8 [cdns3] Add check at line 829, skip call usb_gadget_giveback_request() if it is additional zero length packet request. Needn't call usb_gadget_giveback_request() because it is allocated in this driver.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Apr 3, 2024
Updated
Aug 5, 2026
EPSS
0.2% · 15th percentile

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 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

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.

Follow CVE-2024-26748

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

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

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.

We use this product, ask for help

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 kernel5.4 and later · before 5.4.270
  • linux linux kernel5.5 and later · before 5.10.211
  • linux linux kernel5.11 and later · before 5.15.150
  • linux linux kernel5.16 and later · before 6.1.80
  • linux linux kernel6.2 and later · before 6.6.19
  • linux linux kernel6.7 and later · before 6.7.7
  • linux linux kernel6.8

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

    • 5.4affected
    • 7733f6c32e36ff9d7adadf40001039bf219b1cbe and later · before aad6132ae6e4809e375431f8defd1521985e44e7affected · git
    • 7733f6c32e36ff9d7adadf40001039bf219b1cbe and later · before 1e204a8e9eb514e22a6567fb340ebb47df3f3a48affected · git
    • 7733f6c32e36ff9d7adadf40001039bf219b1cbe and later · before 3a2a909942b5335b7ea66366d84261b3ed5f89c8affected · git
    • 7733f6c32e36ff9d7adadf40001039bf219b1cbe and later · before 9a52b694b066f299d8b9800854a8503457a8b64caffected · git
    • 7733f6c32e36ff9d7adadf40001039bf219b1cbe and later · before 70e8038813f9d3e72df966748ebbc40efe466019affected · git
    • 7733f6c32e36ff9d7adadf40001039bf219b1cbe and later · before 92d20406a3d4ff3e8be667c79209dc9ed31df5b3affected · git
    • 7733f6c32e36ff9d7adadf40001039bf219b1cbe and later · before 5fd9e45f1ebcd57181358af28506e8a661a260b3affected · git
    • before 5.4not affected · semver
    • 5.4.270 and later · up to and including 5.4.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.82-16.1.82-1
Debian:13linuxbefore 6.7.7-16.7.7-1

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-2024-26744Apr 3, 2024 · RDMA/srpt: Support specifying the srpt_service_guid parameter
    22Monitor
  • ← EarlierCVE-2024-26747Apr 3, 2024 · usb: roles: fix NULL pointer issue when put module's reference
    17Monitor
  • Later →CVE-2024-26749Apr 3, 2024 · usb: cdns3: fixed memory use after free at cdns3_gadget_ep_disable()
    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 / packageFixed versionSource
Linux Linux1e204a8e9eb514e22a6567fb340ebb47df3f3a48Vendor (CNA)
Linux Linux3a2a909942b5335b7ea66366d84261b3ed5f89c8Vendor (CNA)
Linux Linux5fd9e45f1ebcd57181358af28506e8a661a260b3Vendor (CNA)
Linux Linux70e8038813f9d3e72df966748ebbc40efe466019Vendor (CNA)
Linux Linux92d20406a3d4ff3e8be667c79209dc9ed31df5b3Vendor (CNA)
Linux Linux9a52b694b066f299d8b9800854a8503457a8b64cVendor (CNA)
Linux Linuxaad6132ae6e4809e375431f8defd1521985e44e7Vendor (CNA)
debian:linux6.1.82-1 · 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.

  • CVE-2024-3581444 days apartswiotlb: Fix double-allocation of slots due to broken alignment handling
    35Monitor
  • CVE-2024-266940 days apartwifi: iwlwifi: fix double-free bug
    31Monitor
  • CVE-2024-267040 days apartext4: fix double-free of blocks due to wrong extents moved_len
    31Monitor
  • CVE-2024-267821 days apartmptcp: fix double-free on socket dismantle
    31Monitor
  • CVE-2024-267921 days apartbtrfs: fix double free of anonymous device after snapshot creation failure
    31Monitor
  • CVE-2024-266532 days apartusb: misc: ljca: Fix double free in error handling path
    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).

National notice (Türkiye Cybersecurity Directorate / USOM)

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

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-415 · Double Free

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 (7 more)

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

All records