CVE-2021-47405: HID: usbhid: free raw_report buffers in usbhid_stop
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: 0.25% (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 2b704864c92dcec2b295f276fcfbfb81d9831f81, 764ac04de056801dfe52a716da63f6e7018e7f3b, 7ce4e49146612261265671b1d30d117139021030.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Linux Linux 2b704864c92dcec2b295f276fcfbfb81d9831f81, 764ac04de056801dfe52a716da63f6e7018e7f3b, 7ce4e49146612261265671b1d30d117139021030 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: HID: usbhid: free raw_report buffers in usbhid_stop Free the unsent raw_report buffers when the device is removed. Fixes a memory leak reported by syzbot at: https://syzkaller.appspot.com/bug?id=7b4fa7cb1a7c2d3342a2a8a6c53371c8c418ab47
- Published
- May 21, 2024
- Updated
- Jun 17, 2026
- EPSS
- 0.2% · 16th percentile
- CWE
- CWE-401
Report tools
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.
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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.
We use this product, ask for helpAffected 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 kernelbefore 4.4.286
- linux linux kernel4.5 and later · before 4.9.285
- linux linux kernel4.10 and later · before 4.14.249
- linux linux kernel4.15 and later · before 4.19.209
- linux linux kernel4.20 and later · before 5.4.151
- linux linux kernel5.5 and later · before 5.10.71
- linux linux kernel5.11 and later · before 5.14.10
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
- 2.6.28affected
- f129ea6d1efe0eddcbb1f0faaec5623788ad9e58 and later · before 7ce4e49146612261265671b1d30d117139021030affected · git
- f129ea6d1efe0eddcbb1f0faaec5623788ad9e58 and later · before efc5c8d29256955cc90d8d570849b2d6121ed09faffected · git
- f129ea6d1efe0eddcbb1f0faaec5623788ad9e58 and later · before c3156fea4d8a0e643625dff69a0421e872d1fdaeaffected · git
- f129ea6d1efe0eddcbb1f0faaec5623788ad9e58 and later · before 764ac04de056801dfe52a716da63f6e7018e7f3baffected · git
- f129ea6d1efe0eddcbb1f0faaec5623788ad9e58 and later · before 965147067fa1bedff3ae1f07ce3f89f1a14d2df3affected · git
- f129ea6d1efe0eddcbb1f0faaec5623788ad9e58 and later · before f7ac4d24e1610b92689946fa88177673f1e88a3faffected · git
- f129ea6d1efe0eddcbb1f0faaec5623788ad9e58 and later · before 2b704864c92dcec2b295f276fcfbfb81d9831f81affected · git
- f129ea6d1efe0eddcbb1f0faaec5623788ad9e58 and later · before f7744fa16b96da57187dc8e5634152d3b63d72deaffected · git
- before 2.6.28not 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:12 | linux | before 5.14.12-1 | 5.14.12-1 |
| SUSE:Linux Enterprise High Availability Extension 12 SP5 | kernel-default | before 4.12.14-122.225.1 | 4.12.14-122.225.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_59 | before 1-8.3.1 | 1-8.3.1 |
| SUSE:Linux Enterprise Real Time 12 SP5 | kernel-rt | before 4.12.14-10.197.1 | 4.12.14-10.197.1 |
| SUSE:Linux Enterprise Real Time 12 SP5 | kernel-rt_debug | before 4.12.14-10.197.1 | 4.12.14-10.197.1 |
| SUSE:Linux Enterprise Real Time 12 SP5 | kernel-source-rt | before 4.12.14-10.197.1 | 4.12.14-10.197.1 |
| SUSE:Linux Enterprise Real Time 12 SP5 | kernel-syms-rt | before 4.12.14-10.197.1 | 4.12.14-10.197.1 |
| SUSE:Linux Enterprise Server 12 SP5 | kernel-azure | before 4.12.14-16.194.1 | 4.12.14-16.194.1 |
| SUSE:Linux Enterprise Server 12 SP5 | kernel-source | before 4.12.14-122.225.1 | 4.12.14-122.225.1 |
| SUSE:Linux Enterprise Server 12 SP5 | kernel-source-azure | before 4.12.14-16.194.1 | 4.12.14-16.194.1 |
| SUSE:Linux Enterprise Server 12 SP5 | kernel-syms | before 4.12.14-122.225.1 | 4.12.14-122.225.1 |
| SUSE:Linux Enterprise Server 12 SP5 | kernel-syms-azure | before 4.12.14-16.194.1 | 4.12.14-16.194.1 |
| SUSE:Linux Enterprise Software Development Kit 12 SP5 | kernel-docs | before 4.12.14-122.225.2 | 4.12.14-122.225.2 |
| SUSE:Linux Enterprise Software Development Kit 12 SP5 | kernel-obs-build | before 4.12.14-122.225.1 | 4.12.14-122.225.1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV90Now
- 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 KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
Published before and after this one in the same product
- ← EarlierCVE-2021-47403May 21, 2024 · ipack: ipoctal: fix module reference leak28Monitor
- ← EarlierCVE-2021-47404May 21, 2024 · HID: betop: fix slab-out-of-bounds Write in betop_probe31Monitor
- Later →CVE-2021-47406May 21, 2024 · ext4: add error checking to ext4_ext_replay_set_iblocks()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 / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 2b704864c92dcec2b295f276fcfbfb81d9831f81 | Vendor (CNA) |
| Linux Linux | 764ac04de056801dfe52a716da63f6e7018e7f3b | Vendor (CNA) |
| Linux Linux | 7ce4e49146612261265671b1d30d117139021030 | Vendor (CNA) |
| Linux Linux | 965147067fa1bedff3ae1f07ce3f89f1a14d2df3 | Vendor (CNA) |
| Linux Linux | c3156fea4d8a0e643625dff69a0421e872d1fdae | Vendor (CNA) |
| Linux Linux | efc5c8d29256955cc90d8d570849b2d6121ed09f | Vendor (CNA) |
| Linux Linux | f7744fa16b96da57187dc8e5634152d3b63d72de | Vendor (CNA) |
| Linux Linux | f7ac4d24e1610b92689946fa88177673f1e88a3f | Vendor (CNA) |
| debian:linux | 5.14.12-1 · Debian:12 | Package registry (OSV) |
| suse:kernel-azure | 4.12.14-16.194.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
| suse:kernel-default | 4.12.14-122.225.1 · SUSE:Linux Enterprise High Availability Extension 12 SP5 | Package registry (OSV) |
| suse:kernel-docs | 4.12.14-122.225.2 · SUSE:Linux Enterprise Software Development Kit 12 SP5 | Package registry (OSV) |
| suse:kernel-obs-build | 4.12.14-122.225.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5 | Package registry (OSV) |
| suse:kernel-rt | 4.12.14-10.197.1 · SUSE:Linux Enterprise Real Time 12 SP5 | Package registry (OSV) |
| suse:kernel-rt_debug | 4.12.14-10.197.1 · SUSE:Linux Enterprise Real Time 12 SP5 | Package registry (OSV) |
| suse:kernel-source | 4.12.14-122.225.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
| suse:kernel-source-azure | 4.12.14-16.194.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
| suse:kernel-source-rt | 4.12.14-10.197.1 · SUSE:Linux Enterprise Real Time 12 SP5 | Package registry (OSV) |
| suse:kernel-syms-azure | 4.12.14-16.194.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
| suse:kernel-syms-rt | 4.12.14-10.197.1 · SUSE:Linux Enterprise Real Time 12 SP5 | Package registry (OSV) |
| suse:kgraft-patch-SLE12-SP5_Update_59 | 1-8.3.1 · SUSE:Linux Enterprise Live Patching 12 SP5 | 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 researchersFinders, 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-24-0519 · May 22, 2024(Linux Kernel Güncellemesi)
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 LifetimeCVSS 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
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (7 more)Show less
- git.kernel.org/stable/c/764ac04de056801dfe52a716da63f6e7018e7f3b
- git.kernel.org/stable/c/7ce4e49146612261265671b1d30d117139021030
- git.kernel.org/stable/c/965147067fa1bedff3ae1f07ce3f89f1a14d2df3
- git.kernel.org/stable/c/c3156fea4d8a0e643625dff69a0421e872d1fdae
- git.kernel.org/stable/c/efc5c8d29256955cc90d8d570849b2d6121ed09f
- git.kernel.org/stable/c/f7744fa16b96da57187dc8e5634152d3b63d72de
- git.kernel.org/stable/c/f7ac4d24e1610b92689946fa88177673f1e88a3f
Vendor advisories and official records. Exploit/PoC links are deliberately left out.