The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab out-of-bounds write.
Noroxi assessment
Priority: Monitor (action score 31/100)
- Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
- Probability of exploitation in the next 30 days: 1.5% (FIRST EPSS); higher than 75% of all records.
- 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 (Debian:12) 5.14.6-1; kernel-debug (openSUSE:Leap 15.2) 5.3.18-lp152.102.1; kernel-default (openSUSE:Leap 15.2) 5.3.18-lp152.102.1.
Low priority for now. Upgrade to linux (Debian:12) 5.14.6-1; kernel-debug (openSUSE:Leap 15.2) 5.3.18-lp152.102.1; kernel-default (openSUSE:Leap 15.2) 5.3.18-lp152.102.1 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
The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access.
- Published
- Oct 4, 2021
- Updated
- Jun 17, 2026
- EPSS
- 1.5% · 75th percentile
- CWE
- CWE-787
Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.5%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Proof of concept exists, no weaponized module
- 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 |
| netapp | h300s firmware | cpe:2.3:o:netapp:h300s_firmware |
| netapp | h300s | cpe:2.3:h:netapp:h300s |
| netapp | h500s firmware | cpe:2.3:o:netapp:h500s_firmware |
| netapp | h500s | cpe:2.3:h:netapp:h500s |
| netapp | h700s firmware | cpe:2.3:o:netapp:h700s_firmware |
| netapp | h700s | cpe:2.3:h:netapp:h700s |
| netapp | h300e firmware | cpe:2.3:o:netapp:h300e_firmware |
| netapp | h300e | cpe:2.3:h:netapp:h300e |
| netapp | h500e firmware | cpe:2.3:o:netapp:h500e_firmware |
| netapp | h500e | cpe:2.3:h:netapp:h500e |
| netapp | h700e firmware | cpe:2.3:o:netapp:h700e_firmware |
and 8 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux9.0
- linux linux kernel4.5 and later · before 4.9.281
- linux linux kernel4.10 and later · before 4.14.245
- linux linux kernel4.15 and later · before 4.19.205
- linux linux kernel4.20 and later · before 5.4.143
- linux linux kernel5.5 and later · before 5.10.61
- linux linux kernel5.11 and later · before 5.13.13
- linux linux kernel2.6.12 and later · before 4.4.282
- netapp h300e firmwareall versions
- netapp h300s firmwareall versions
- netapp h410c firmwareall versions
- netapp h410s firmwareall versions
- netapp h500e firmwareall versions
- netapp h500s firmwareall versions
- netapp h700e firmwareall versions
- netapp h700s firmwareall versions
- netapp solidfire baseboard management controller firmwareall versions
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 5.14.6-1 | 5.14.6-1 |
| openSUSE:Leap 15.2 | kernel-debug | before 5.3.18-lp152.102.1 | 5.3.18-lp152.102.1 |
| openSUSE:Leap 15.2 | kernel-default | before 5.3.18-lp152.102.1 | 5.3.18-lp152.102.1 |
| openSUSE:Leap 15.2 | kernel-default-base | before 5.3.18-lp152.102.1.lp152.8.49.1 | 5.3.18-lp152.102.1.lp152.8.49.1 |
| openSUSE:Leap 15.2 | kernel-docs | before 5.3.18-lp152.102.1 | 5.3.18-lp152.102.1 |
| openSUSE:Leap 15.2 | kernel-kvmsmall | before 5.3.18-lp152.102.1 | 5.3.18-lp152.102.1 |
| openSUSE:Leap 15.2 | kernel-obs-build | before 5.3.18-lp152.102.1 | 5.3.18-lp152.102.1 |
| openSUSE:Leap 15.2 | kernel-obs-qa | before 5.3.18-lp152.102.1 | 5.3.18-lp152.102.1 |
| openSUSE:Leap 15.2 | kernel-preempt | before 5.3.18-lp152.102.1 | 5.3.18-lp152.102.1 |
| openSUSE:Leap 15.2 | kernel-source | before 5.3.18-lp152.102.1 | 5.3.18-lp152.102.1 |
| openSUSE:Leap 15.2 | kernel-syms | before 5.3.18-lp152.102.1 | 5.3.18-lp152.102.1 |
| openSUSE:Leap 15.3 | dtb-aarch64 | before 5.3.18-59.34.1 | 5.3.18-59.34.1 |
| openSUSE:Leap 15.3 | kernel-64kb | before 5.3.18-59.34.1 | 5.3.18-59.34.1 |
| openSUSE:Leap 15.3 | kernel-azure | before 5.3.18-38.28.2 | 5.3.18-38.28.2 |
| openSUSE:Leap 15.3 | kernel-debug | before 5.3.18-59.34.1 | 5.3.18-59.34.1 |
| openSUSE:Leap 15.3 | kernel-default | before 5.3.18-59.34.1 | 5.3.18-59.34.1 |
| openSUSE:Leap 15.3 | kernel-default-base | before 5.3.18-59.34.1.18.21.1 | 5.3.18-59.34.1.18.21.1 |
| openSUSE:Leap 15.3 | kernel-docs | before 5.3.18-59.34.1 | 5.3.18-59.34.1 |
| openSUSE:Leap 15.3 | kernel-kvmsmall | before 5.3.18-59.34.1 | 5.3.18-59.34.1 |
| openSUSE:Leap 15.3 | kernel-obs-build | before 5.3.18-59.34.1 | 5.3.18-59.34.1 |
| openSUSE:Leap 15.3 | kernel-obs-qa | before 5.3.18-59.34.1 | 5.3.18-59.34.1 |
| openSUSE:Leap 15.3 | kernel-preempt | before 5.3.18-59.34.1 | 5.3.18-59.34.1 |
| openSUSE:Leap 15.3 | kernel-source | before 5.3.18-59.34.1 | 5.3.18-59.34.1 |
| openSUSE:Leap 15.3 | kernel-source-azure | before 5.3.18-38.28.2 | 5.3.18-38.28.2 |
+54
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- 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
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
Published before and after this one in the same product
- ← EarlierCVE-2021-3653Sep 29, 2021 · A flaw was found in the KVM's AMD code for supporting SVM nested virtualization.35Monitor
- ← EarlierCVE-2021-41864Oct 1, 2021 · prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multipl31Monitor
- Later →CVE-2021-42252Oct 11, 2021 · An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel before 5.14.6.31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:linux | 5.14.6-1 · Debian:12 | Package registry (OSV) |
| opensuse:kernel-azure | 5.3.18-38.28.2 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:kernel-debug | 5.3.18-lp152.102.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:kernel-default | 5.3.18-lp152.102.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:kernel-default-base | 5.3.18-lp152.102.1.lp152.8.49.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:kernel-docs | 5.3.18-lp152.102.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:kernel-kvmsmall | 5.3.18-lp152.102.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:kernel-obs-build | 5.3.18-lp152.102.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:kernel-obs-qa | 5.3.18-lp152.102.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:kernel-preempt | 5.3.18-lp152.102.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:kernel-source | 5.3.18-lp152.102.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:kernel-source-azure | 5.3.18-38.28.2 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:kernel-syms | 5.3.18-lp152.102.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| suse:kernel-azure | 5.3.18-18.72.2 · SUSE:Linux Enterprise Module for Public Cloud 15 SP2 | Package registry (OSV) |
| suse:kernel-bigmem | 3.0.101-108.132.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:kernel-default | 3.0.101-108.132.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:kernel-ec2 | 3.0.101-108.132.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:kernel-pae | 3.0.101-108.132.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:kernel-ppc64 | 3.0.101-108.132.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:kernel-source | 3.0.101-108.132.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:kernel-source-azure | 5.3.18-18.72.2 · SUSE:Linux Enterprise Module for Public Cloud 15 SP2 | Package registry (OSV) |
| suse:kernel-syms | 3.0.101-108.132.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:kernel-syms-azure | 5.3.18-18.72.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP2 | Package registry (OSV) |
| suse:kernel-trace | 3.0.101-108.132.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:kernel-xen | 3.0.101-108.132.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×3
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:2 | 2021-12-03 |
| Proof-of-concept repository on GitHub | stars:31 | 2021-12-03 |
| Proof-of-concept repository on GitHub | stars:0 | 2026-07-21 |
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.
- Published
- First PoC+59 d
- TodayOct 25, 2026+1847 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
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).
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-787 · Out-of-bounds WriteCVSS 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
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (3 more)Show less
Vendor advisories and official records. Exploit/PoC links are deliberately left out.