CVE-2026-98948: Linux kernel · mlxsw: spectrum_flower: Fix port range register leak in tmplt_create()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in c8e934287debb29c6ded86b21e49fc72e186d15e : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:30 UTC
Rated Low by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in c8e934287debb29c6ded86b21e49fc72e186d15e, 3938430f0237c59ca08d6a366e7657b2b7f8d0bb, 41ad5bcf0219aaebf8ffb052c5e8177479330cde +2
Exploitation evidence
Disclosed: evidence found.
CVE published 23 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
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available and has been applied in the Linux kernel. Users should update to the fixed versions identified by the commit hashes provided. No additional mitigation steps are indicated.
Description
A resource leak vulnerability was fixed in the Linux kernel's mlxsw spectrum_flower component. The flaw involved port range registers acquired during flow template parsing that were not properly released, leading to a register leak. This was addressed by refactoring resource release code and invoking it during template creation to prevent leaks.
References
- git.kernel.org/stable/c/41ad5bcf0219aaebf8ffb052c5e8177479330cde (opens in a new tab)
- git.kernel.org/stable/c/c8e934287debb29c6ded86b21e49fc72e186d15e (opens in a new tab)
- git.kernel.org/stable/c/3938430f0237c59ca08d6a366e7657b2b7f8d0bb (opens in a new tab)
- git.kernel.org/stable/c/4eaf1285b5c1e42f80e47f9fe0d391e70418db02 (opens in a new tab)
- git.kernel.org/stable/c/7ea07afb230f1342ab0f9365edd0aae137f425d3 (opens in a new tab)