CVE-2026-98860: Linux kernel · HID: bpf: cast size to ssize_t when checking hid_bpf_hw_request
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f9f808227554b2c116fd07dd2328ecd74ea3f411 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:16 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in f9f808227554b2c116fd07dd2328ecd74ea3f411, 97be6396817bd3b11d06239010d27902940bfaa9, 8b85ef0f561039e249c3f883c5280a1449c6dbee +4
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– |
AI-suggested
The issue is fixed in Linux kernel versions 6.12.113, 6.18.56, 6.20, and 7.0, as well as specific commits identified by their hashes. Users and administrators should upgrade to these fixed versions to remediate the vulnerability.
Description
A vulnerability in the Linux kernel's HID subsystem involving BPF programs was fixed by properly casting size to ssize_t when checking hid_bpf_hw_request. The flaw caused negative hardware error codes to be misinterpreted as large positive values, leading to incorrect success returns and potentially allowing BPF programs to operate on uninitialized or stale data.
References
- git.kernel.org/stable/c/8b85ef0f561039e249c3f883c5280a1449c6dbee (opens in a new tab)
- git.kernel.org/stable/c/97be6396817bd3b11d06239010d27902940bfaa9 (opens in a new tab)
- git.kernel.org/stable/c/f9f808227554b2c116fd07dd2328ecd74ea3f411 (opens in a new tab)
- git.kernel.org/stable/c/3afefbfe55c2a8a0c4bdf6f4cc1f773da120027c (opens in a new tab)