CVE-2021-47659: drm/plane: Move range check for format_count earlier
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: 0.26% (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 1e29d829ad51d1472dd035487953a6724b56fc33, 4ab7e453a3ee88c274cf97bee9487ab92a66d313, 4b674dd69701c2e22e8e7770c1706a69f3b17269.
Low priority for now. Upgrade to Linux Linux 1e29d829ad51d1472dd035487953a6724b56fc33, 4ab7e453a3ee88c274cf97bee9487ab92a66d313, 4b674dd69701c2e22e8e7770c1706a69f3b17269 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: drm/plane: Move range check for format_count earlier While the check for format_count > 64 in __drm_universal_plane_init() shouldn't be hit (it's a WARN_ON), in its current position it will then leak the plane->format_types array and fail to call drm_mode_object_unregister() leaking the modeset identifier. Move it to the start of the function to avoid allocating those resources in the first place.
- Published
- Feb 26, 2025
- Updated
- Nov 5, 2026
- EPSS
- 0.2% · 19th percentile
- CWE
- —
Report tools
Action score
22
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.
Is your version affected? Check itNoroxi 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 |
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
- 4.14affected
- e6fc3b68558e4c6d8d160b5daf2511b99afa8814 and later · before 4ab7e453a3ee88c274cf97bee9487ab92a66d313affected · git
- e6fc3b68558e4c6d8d160b5daf2511b99afa8814 and later · before 1e29d829ad51d1472dd035487953a6724b56fc33affected · git
- e6fc3b68558e4c6d8d160b5daf2511b99afa8814 and later · before b5cd108143513e4498027b96ec4710702d186f11affected · git
- e6fc3b68558e4c6d8d160b5daf2511b99afa8814 and later · before 978e3d023256bfaf34a0033d40c94e8a8e70cf3caffected · git
- e6fc3b68558e4c6d8d160b5daf2511b99afa8814 and later · before 787163d19bc3cdc6ca4b96223f62208534d1cf6baffected · git
- e6fc3b68558e4c6d8d160b5daf2511b99afa8814 and later · before ad6dd7a2bac86118985c7b3426e175b9d3c1ec4faffected · git
- e6fc3b68558e4c6d8d160b5daf2511b99afa8814 and later · before 4b674dd69701c2e22e8e7770c1706a69f3b17269affected · git
- before 4.14not affected · semver
- 4.19.247 and later · up to and including 4.19.*not affected · semver
Affected versions · NVD (6)
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel4.14 and later · before 4.19.247
- linux linux kernel4.20 and later · before 5.4.198
- linux linux kernel5.5 and later · before 5.10.121
- linux linux kernel5.11 and later · before 5.15.46
- linux linux kernel5.16 and later · before 5.17.14
- linux linux kernel5.18 and later · before 5.18.3
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 5.18.5-1 | 5.18.5-1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-64kb | before 5.3.18-150300.59.201.1 | 5.3.18-150300.59.201.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-default-base | before 5.3.18-150300.59.201.1.150300.18.120.1 | 5.3.18-150300.59.201.1.150300.18.120.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-docs | before 5.3.18-150300.59.201.1 | 5.3.18-150300.59.201.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-obs-build | before 5.3.18-150300.59.201.1 | 5.3.18-150300.59.201.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-preempt | before 5.3.18-150300.59.201.1 | 5.3.18-150300.59.201.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-source | before 5.3.18-150300.59.201.1 | 5.3.18-150300.59.201.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-syms | before 5.3.18-150300.59.201.1 | 5.3.18-150300.59.201.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kernel-default | before 4.12.14-122.258.1 | 4.12.14-122.258.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_68 | before 1-8.3.1 | 1-8.3.1 |
| SUSE:Linux Enterprise Live Patching 15 SP3 | kernel-default | before 5.3.18-150300.59.201.1 | 5.3.18-150300.59.201.1 |
| SUSE:Linux Enterprise Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_56 | before 1-150300.7.3.1 | 1-150300.7.3.1 |
| SUSE:Linux Enterprise Micro 5.1 | kernel-rt | before 5.3.18-150300.205.1 | 5.3.18-150300.205.1 |
| SUSE:Linux Enterprise Micro 5.1 | kernel-source-rt | before 5.3.18-150300.205.1 | 5.3.18-150300.205.1 |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | kernel-source | before 4.12.14-122.258.1 | 4.12.14-122.258.1 |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | kernel-syms | before 4.12.14-122.258.1 | 4.12.14-122.258.1 |
| SUSE:Linux Enterprise Server 15 SP3-LTSS | kernel-zfcpdump | before 5.3.18-150300.59.201.1 | 5.3.18-150300.59.201.1 |
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-2022-49731Feb 26, 2025 · ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo()22Monitor
- ← EarlierCVE-2021-47650Feb 26, 2025 · ASoC: soc-compress: prevent the potentially use of null pointer22Monitor
- Later →CVE-2022-49046Feb 26, 2025 · i2c: dev: check return value when calling dev_set_name()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 | 1e29d829ad51d1472dd035487953a6724b56fc33 | Vendor (CNA) |
| Linux Linux | 4ab7e453a3ee88c274cf97bee9487ab92a66d313 | Vendor (CNA) |
| Linux Linux | 4b674dd69701c2e22e8e7770c1706a69f3b17269 | Vendor (CNA) |
| Linux Linux | 787163d19bc3cdc6ca4b96223f62208534d1cf6b | Vendor (CNA) |
| Linux Linux | 978e3d023256bfaf34a0033d40c94e8a8e70cf3c | Vendor (CNA) |
| Linux Linux | ad6dd7a2bac86118985c7b3426e175b9d3c1ec4f | Vendor (CNA) |
| Linux Linux | b5cd108143513e4498027b96ec4710702d186f11 | Vendor (CNA) |
| debian:linux | 5.18.5-1 · Debian:12 | Package registry (OSV) |
| suse:kernel-64kb | 5.3.18-150300.59.201.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-default | 4.12.14-122.258.1 · SUSE:Linux Enterprise Live Patching 12 SP5 | Package registry (OSV) |
| suse:kernel-default-base | 5.3.18-150300.59.201.1.150300.18.120.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-docs | 5.3.18-150300.59.201.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP3_Update_56 | 1-150300.7.3.1 · SUSE:Linux Enterprise Live Patching 15 SP3 | Package registry (OSV) |
| suse:kernel-obs-build | 5.3.18-150300.59.201.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-preempt | 5.3.18-150300.59.201.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-rt | 5.3.18-150300.205.1 · SUSE:Linux Enterprise Micro 5.1 | Package registry (OSV) |
| suse:kernel-source | 4.12.14-122.258.1 · SUSE:Linux Enterprise Server 12 SP5-LTSS | Package registry (OSV) |
| suse:kernel-source-rt | 5.3.18-150300.205.1 · SUSE:Linux Enterprise Micro 5.1 | Package registry (OSV) |
| suse:kernel-syms | 4.12.14-122.258.1 · SUSE:Linux Enterprise Server 12 SP5-LTSS | Package registry (OSV) |
| suse:kgraft-patch-SLE12-SP5_Update_68 | 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.
Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.
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)
—
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 (2)
- SSVC exploitation— → none
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (6 more)Show less
- git.kernel.org/stable/c/4ab7e453a3ee88c274cf97bee9487ab92a66d313
- git.kernel.org/stable/c/4b674dd69701c2e22e8e7770c1706a69f3b17269
- git.kernel.org/stable/c/787163d19bc3cdc6ca4b96223f62208534d1cf6b
- git.kernel.org/stable/c/978e3d023256bfaf34a0033d40c94e8a8e70cf3c
- git.kernel.org/stable/c/ad6dd7a2bac86118985c7b3426e175b9d3c1ec4f
- git.kernel.org/stable/c/b5cd108143513e4498027b96ec4710702d186f11
Vendor advisories and official records. Exploit/PoC links are deliberately left out.