CVE-2026-98584: Linux kernel · net/sched: fix potential stack infoleak in em_text_dump()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in 9923e1c537f91f3530b52d4efce85f3d9c131bf8 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 12:55 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 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 9923e1c537f91f3530b52d4efce85f3d9c131bf8, 9c572a83037a7dcd653ba3a9cc468c16b857d0c9, 0b160417826d22f24fc31a5b9cfae3b14aa70f76
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 Linux kernel to 9923e1c537f91f3530b52d4efce85f3d9c131bf8, 9c572a83037a7dcd653ba3a9cc468c16b857d0c9 or 0b160417826d22f24fc31a5b9cfae3b14aa70f76.
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– |
AI-suggested
A fix is available and has been applied in specific Linux kernel commits. Users and administrators should update their Linux kernel to a version including these fixes to eliminate the potential stack information leak. No additional mitigation actions are indicated by the vendor advisory.
Description
A potential stack information leak vulnerability was identified and fixed in the Linux kernel's net/sched subsystem within the em_text_dump() function. The issue arises because a struct allocated on the stack was not fully zero-initialized before being copied to a netlink response, potentially leaking uninitialized stack bytes. The vulnerability was introduced when the code replaced strncpy() with strscpy(), which does not zero-pad the destination buffer. The fix involves zero-initializing the struct to prevent leakage.