CVE-2021-42008
HIGH
7.8
CVSS Score
Published: October 4, 2021 at 11:17 PM UTC
Updated: June 17, 2026 at 04:09 AM UTC
20 products affected across 3 vendorsLinux KernelDebian LinuxH700S Firmware
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Severity
HIGH7.8
Exploit prediction
EPSS 2%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%2.6.12 ≤ v < 4.4.2824.10 ≤ v < 4.14.2454.15 ≤ v < 4.19.2054.20 ≤ v < 5.4.1434.5 ≤ v < 4.9.2815.11 ≤ v < 5.13.135.5 ≤ v < 5.10.61
Affected range stops below 4.14.245, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.205, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.282, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.281, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.10.61, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.13.13, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.143, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (5)
x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.13x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19d1532a187669ce86d5a2696eb7275310070793Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlx_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20211104-0002/x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://www.youtube.com/watch?v=d5f9xLK8VhwCVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
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