CVE-2026-98627: Linux kernel · bpf: Preserve packet pointer class displacement in regsafe()
Affects Linux kernelSource CVE Database V5
Not known to be exploited : upgrade to fd16449a9b3b31a8f18944c2f0e29e4e218ca2cf or 091b40845bd3cf96791171ca95113e9184ccb596 soon.
Data as of 26 Oct 2026, 17:16 UTC
Rated High 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 fd16449a9b3b31a8f18944c2f0e29e4e218ca2cf, 091b40845bd3cf96791171ca95113e9184ccb596
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 fd16449a9b3b31a8f18944c2f0e29e4e218ca2cf or 091b40845bd3cf96791171ca95113e9184ccb596.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available and has been applied in the Linux kernel at commits fd16449a9b3b31a8f18944c2f0e29e4e218ca2cf and 091b40845bd3cf96791171ca95113e9184ccb596. Users and administrators should update to a kernel version including these commits to remediate the issue.
Description
A vulnerability in the Linux kernel's BPF subsystem involves improper handling of packet pointer class displacement in the regsafe() function. The flaw allows an out-of-bounds packet access due to unsound preservation of displacement between registers sharing a packet pointer ID. This issue has been fixed in specific commits.