CVE-2021-47267: usb: fix various gadget panics on 10gbps cabling
Noroxi assessment
Priority: Monitor (action score 25/100)
- 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: 0.68% (FIRST EPSS); higher than 52.7% of all records.
- Anyone who can reach it over the internet 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 032e288097a553db5653af552dd8035cd2a0ba96, 45f9a2fe737dc0a5df270787f2231aee8985cd59, 5ef23506695b01d5d56a13a092a97f2478069d75.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Linux Linux 032e288097a553db5653af552dd8035cd2a0ba96, 45f9a2fe737dc0a5df270787f2231aee8985cd59, 5ef23506695b01d5d56a13a092a97f2478069d75 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: fix various gadget panics on 10gbps cabling usb_assign_descriptors() is called with 5 parameters, the last 4 of which are the usb_descriptor_header for: full-speed (USB1.1 - 12Mbps [including USB1.0 low-speed @ 1.5Mbps), high-speed (USB2.0 - 480Mbps), super-speed (USB3.0 - 5Gbps), super-speed-plus (USB3.1 - 10Gbps). The differences between full/high/super-speed descriptors are usually substantial (due to changes in the maximum usb block size from 64 to 512 to 1024 bytes and other differences in the specs), while the difference between 5 and 10Gbps descriptors may be as little as nothing (in many cases the same tuning is simply good enough). However if a gadget driver calls usb_assign_descriptors() with a NULL descriptor for super-speed-plus and is then used on a max 10gbps configuration, the kernel will crash with a null pointer dereference, when a 10gbps capable device port + cable + host port combination shows up. (This wouldn't happen if the gadget max-speed was set to 5gbps, but it of course defaults to the maximum, and there's no real reason to artificially limit it) The fix is to simply use the 5gbps descriptor as the 10gbps descriptor, if a 10gbps descriptor wasn't provided. Obviously this won't fix the problem if the 5gbps descriptor is also NULL, but such cases can't be so trivially solved (and any such gadgets are unlikely to be used with USB3 ports any way).
- Published
- May 21, 2024
- Updated
- Jun 17, 2026
- EPSS
- 0.6% · 52th percentile
- CWE
- CWE-476
Report tools
Action score
25
Monitor
Low priority for now.
- CVSS
- 25 / 40 · 6.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.6%
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 4.9.273
- linux linux kernel4.10 and later · before 4.14.237
- linux linux kernel4.15 and later · before 4.19.195
- linux linux kernel4.20 and later · before 5.4.126
- linux linux kernel5.5 and later · before 5.10.44
- linux linux kernel5.11 and later · before 5.12.11
- linux linux kernel5.13
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
- 3.8affected
- 10287baec761d33f0a82d84b46e37a44030350d8 and later · before fd24be23abf3e94260be0f00bb42c7e91d495f87affected · git
- 10287baec761d33f0a82d84b46e37a44030350d8 and later · before 70cd19cb5bd94bbb5bacfc9c1e4ee0071699a604affected · git
- 10287baec761d33f0a82d84b46e37a44030350d8 and later · before 45f9a2fe737dc0a5df270787f2231aee8985cd59affected · git
- 10287baec761d33f0a82d84b46e37a44030350d8 and later · before 5ef23506695b01d5d56a13a092a97f2478069d75affected · git
- 10287baec761d33f0a82d84b46e37a44030350d8 and later · before b972eff874637402ddc4a7dd11fb22538a0b6d28affected · git
- 10287baec761d33f0a82d84b46e37a44030350d8 and later · before ca6bc277430d90375452b60b047763a090b7673eaffected · git
- 10287baec761d33f0a82d84b46e37a44030350d8 and later · before 032e288097a553db5653af552dd8035cd2a0ba96affected · git
- before 3.8not affected · semver
- 4.9.273 and later · up to and including 4.9.*not 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 5.10.46-1 | 5.10.46-1 |
| SUSE:Linux Enterprise High Availability Extension 12 SP5 | kernel-default | before 4.12.14-122.222.1 | 4.12.14-122.222.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | kernel-default-base | before 5.3.18-150200.24.194.1.150200.9.99.1 | 5.3.18-150200.24.194.1.150200.9.99.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | kernel-docs | before 5.3.18-150200.24.194.1 | 5.3.18-150200.24.194.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | kernel-obs-build | before 5.3.18-150200.24.194.1 | 5.3.18-150200.24.194.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | kernel-preempt | before 5.3.18-150200.24.194.1 | 5.3.18-150200.24.194.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | kernel-source | before 5.3.18-150200.24.194.1 | 5.3.18-150200.24.194.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | kernel-syms | before 5.3.18-150200.24.194.1 | 5.3.18-150200.24.194.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_58 | before 1-8.3.1 | 1-8.3.1 |
| SUSE:Linux Enterprise Live Patching 15 SP2 | kernel-default | before 5.3.18-150200.24.194.1 | 5.3.18-150200.24.194.1 |
| SUSE:Linux Enterprise Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_49 | before 1-150200.5.3.1 | 1-150200.5.3.1 |
| SUSE:Linux Enterprise Real Time 12 SP5 | kernel-rt | before 4.12.14-10.191.1 | 4.12.14-10.191.1 |
| SUSE:Linux Enterprise Real Time 12 SP5 | kernel-rt_debug | before 4.12.14-10.191.1 | 4.12.14-10.191.1 |
| SUSE:Linux Enterprise Real Time 12 SP5 | kernel-source-rt | before 4.12.14-10.191.1 | 4.12.14-10.191.1 |
| SUSE:Linux Enterprise Real Time 12 SP5 | kernel-syms-rt | before 4.12.14-10.191.1 | 4.12.14-10.191.1 |
| SUSE:Linux Enterprise Server 12 SP5 | kernel-azure | before 4.12.14-16.191.1 | 4.12.14-16.191.1 |
| SUSE:Linux Enterprise Server 12 SP5 | kernel-source | before 4.12.14-122.222.1 | 4.12.14-122.222.1 |
| SUSE:Linux Enterprise Server 12 SP5 | kernel-source-azure | before 4.12.14-16.191.1 | 4.12.14-16.191.1 |
| SUSE:Linux Enterprise Server 12 SP5 | kernel-syms | before 4.12.14-122.222.1 | 4.12.14-122.222.1 |
| SUSE:Linux Enterprise Server 12 SP5 | kernel-syms-azure | before 4.12.14-16.191.1 | 4.12.14-16.191.1 |
| SUSE:Linux Enterprise Software Development Kit 12 SP5 | kernel-docs | before 4.12.14-122.222.1 | 4.12.14-122.222.1 |
| SUSE:Linux Enterprise Software Development Kit 12 SP5 | kernel-obs-build | before 4.12.14-122.222.1 | 4.12.14-122.222.1 |
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-2021-47265May 21, 2024 · RDMA: Verify port when creating flow rule22Monitor
- ← EarlierCVE-2021-47266May 21, 2024 · RDMA/ipoib: Fix warning caused by destroying non-initial netns22Monitor
- Later →CVE-2021-47268May 21, 2024 · usb: typec: tcpm: cancel vdm and state machine hrtimer when unregister tcpm port31Monitor
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 | 032e288097a553db5653af552dd8035cd2a0ba96 | Vendor (CNA) |
| Linux Linux | 45f9a2fe737dc0a5df270787f2231aee8985cd59 | Vendor (CNA) |
| Linux Linux | 5ef23506695b01d5d56a13a092a97f2478069d75 | Vendor (CNA) |
| Linux Linux | 70cd19cb5bd94bbb5bacfc9c1e4ee0071699a604 | Vendor (CNA) |
| Linux Linux | b972eff874637402ddc4a7dd11fb22538a0b6d28 | Vendor (CNA) |
| Linux Linux | ca6bc277430d90375452b60b047763a090b7673e | Vendor (CNA) |
| Linux Linux | fd24be23abf3e94260be0f00bb42c7e91d495f87 | Vendor (CNA) |
| debian:linux | 5.10.46-1 · Debian:12 | Package registry (OSV) |
| suse:kernel-azure | 4.12.14-16.191.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
| suse:kernel-default | 5.3.18-150200.24.194.1 · SUSE:Linux Enterprise Live Patching 15 SP2 | Package registry (OSV) |
| suse:kernel-default-base | 5.3.18-150200.24.194.1.150200.9.99.1 · SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | Package registry (OSV) |
| suse:kernel-docs | 5.3.18-150200.24.194.1 · SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP2_Update_49 | 1-150200.5.3.1 · SUSE:Linux Enterprise Live Patching 15 SP2 | Package registry (OSV) |
| suse:kernel-obs-build | 5.3.18-150200.24.194.1 · SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | Package registry (OSV) |
| suse:kernel-preempt | 5.3.18-150200.24.194.1 · SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | Package registry (OSV) |
| suse:kernel-rt | 4.12.14-10.191.1 · SUSE:Linux Enterprise Real Time 12 SP5 | Package registry (OSV) |
| suse:kernel-source | 5.3.18-150200.24.194.1 · SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | Package registry (OSV) |
| suse:kernel-source-azure | 4.12.14-16.191.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
| suse:kernel-syms | 5.3.18-150200.24.194.1 · SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | Package registry (OSV) |
| suse:kernel-syms-azure | 4.12.14-16.191.1 · SUSE:Linux Enterprise Server 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
- Anyone who can reach it over the internet 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
- low · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- low · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- Low
Weakness class (CWE)
CWE-476 · NULL Pointer DereferenceCVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
nvd-secondary
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 (6 more)Show less
- git.kernel.org/stable/c/45f9a2fe737dc0a5df270787f2231aee8985cd59
- git.kernel.org/stable/c/5ef23506695b01d5d56a13a092a97f2478069d75
- git.kernel.org/stable/c/70cd19cb5bd94bbb5bacfc9c1e4ee0071699a604
- git.kernel.org/stable/c/b972eff874637402ddc4a7dd11fb22538a0b6d28
- git.kernel.org/stable/c/ca6bc277430d90375452b60b047763a090b7673e
- git.kernel.org/stable/c/fd24be23abf3e94260be0f00bb42c7e91d495f87
Vendor advisories and official records. Exploit/PoC links are deliberately left out.