CVE-2026-98816: Linux kernel · bpf: Fix overflow of jump offset in constant blinding
Affects Linux kernelSource CVE Database V5
Not known to be exploited : upgrade to ad139384ecddb6f3e7e3c3c12765aafae0e39670 or 443328237113ee0ea515e506497334d871dbc2aa 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 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in ad139384ecddb6f3e7e3c3c12765aafae0e39670, 443328237113ee0ea515e506497334d871dbc2aa
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 ad139384ecddb6f3e7e3c3c12765aafae0e39670 or 443328237113ee0ea515e506497334d871dbc2aa.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | 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
This vulnerability has been fixed in the Linux kernel versions that include the commits ad139384ecddb6f3e7e3c3c12765aafae0e39670 and 443328237113ee0ea515e506497334d871dbc2aa. Users should update their Linux kernel to a version containing these fixes. No additional mitigation is required once patched.
Description
A vulnerability in the Linux kernel's BPF (Berkeley Packet Filter) JIT constant blinding logic could cause an overflow of the jump offset, leading to a kernel crash when running certain BPF programs with hardened JIT enabled. This issue arises from improper handling of backward jump offsets that wrap around the signed 16-bit integer limit.