CVE-2026-99240: Linux kernel · mm/damon/core: error damos_commit_quota_goal() for zero target_value
Source GCVE Database
Not known to be exploited · fixed in d5482be6243b816730689099c017109eb8730dd5 : update Linux kernel when convenient.
Data as of 2 Nov 2026, 19:29 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
Thin evidence
One scorer or none- Patch
- Available – fixed in d5482be6243b816730689099c017109eb8730dd5, cc190c4073f570fd78a9d00dd3d13a71eced5403, 156aeda4d74e9007b56492ed1f3b5838822632be +3
Exploitation evidence
Disclosed: evidence found.
CVE published 2 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 2 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
Red Hatredhat/kernelpkg:rpm/redhat/kernelOther threats | 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 patch series has been applied to the Linux kernel that moves zero target_value validation to the core DAMON layer, preventing division-by-zero errors. Users should apply the official Linux kernel updates that include this patch to mitigate the vulnerability. No additional workarounds are indicated.
Description
A vulnerability in the Linux kernel's memory management subsystem (DAMON) could cause a division-by-zero error when the quota target value is zero. The issue arises because multiple DAMON API callers were responsible for validating this parameter, leading to potential mistakes. The fix centralizes zero target value validation in the core layer, preventing the error by returning an error when a zero target value is detected.
References
- nvd.nist.gov/vuln/detail/CVE-2026-99240 (opens in a new tab)
- git.kernel.org/stable/c/156aeda4d74e9007b56492ed1f3b5838822632be (opens in a new tab)
- git.kernel.org/stable/c/cc190c4073f570fd78a9d00dd3d13a71eced5403 (opens in a new tab)
- git.kernel.org/stable/c/d5482be6243b816730689099c017109eb8730dd5 (opens in a new tab)