CVE-2026-98583: Linux kernel · nfc: nfcmrvl: validate helper command length before pull
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f15ad9d6e9173a037587dded77c904fdae8df380 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 12:55 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in f15ad9d6e9173a037587dded77c904fdae8df380, ed2e00bb22c73156bf8030b6204deabb25cf4eb5, e4b012240c8aaf57cec192234c24e0db5f531ffa +5
Exploitation evidence
Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available and has been applied in the Linux kernel source as indicated by multiple fixed commit versions. Users should update to a Linux kernel version that includes these fixes to remediate the vulnerability.
Description
A vulnerability in the Linux kernel NFC driver (nfcmrvl) involves improper validation of helper command length before processing. The firmware download receive path removes the NCI data header and reads the helper command without first validating the remaining packet length, allowing a short frame to be accessed before the malformed packet is rejected. This flaw has been fixed by validating the complete helper command length before stripping the NCI data header.
References
- git.kernel.org/stable/c/842c0603cfa49530ef081f181a2ddbba77a37231 (opens in a new tab)
- git.kernel.org/stable/c/e4b012240c8aaf57cec192234c24e0db5f531ffa (opens in a new tab)
- git.kernel.org/stable/c/f15ad9d6e9173a037587dded77c904fdae8df380 (opens in a new tab)
- git.kernel.org/stable/c/a4e56f57dd04d8f9bc6bc55f90f3d129da759ec9 (opens in a new tab)
- git.kernel.org/stable/c/4d4601e182c8567329be7d919669ec4d847ddd93 (opens in a new tab)
- git.kernel.org/stable/c/ed2e00bb22c73156bf8030b6204deabb25cf4eb5 (opens in a new tab)
- git.kernel.org/stable/c/6a17a5806e9fcd99cf0dd30c3e6301f2aa1fac3c (opens in a new tab)
- git.kernel.org/stable/c/686f942332b1667f13f3b8d6a2f50bcfbf42e277 (opens in a new tab)