CVE-2026-98155

Host hang or panic via unchecked response lengths

Published Sep 25, 2026 · Updated Sep 25, 2026

An out-of-bounds read in the Linux kernel QAIC driver allows attackers controlling an AIC100 device to hang or panic the host. In resp_worker(), the orphaned-response transaction loop trusts device-supplied counts and lengths and skips decode_message() bounds checks, so parsing can pass the slab allocation's end. Reachability requires an AIC100 accelerator to send a malformed NNC wire response; the resulting read can also loop indefinitely, with no reported data modification.

CVSS severityUnavailable
Unscored
EPSS probability0.16%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in the Linux kernel QAIC driver allows attackers controlling an AIC100 device to hang or panic the host. In resp_worker(), the orphaned-response transaction loop trusts device-supplied counts and lengths and skips decode_message() bounds checks, so parsing can pass the slab allocation's end. Reachability requires an AIC100 accelerator to send a malformed NNC wire response; the resulting read can also loop indefinitely, with no reported data modification.

The record

CVE
CVE-2026-98155
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=08021f2d4a557d6491e3bcc288e96425f50aa3cf <f4b64488f3deca63f7fbc7d7c3835b2e668003f9
  2. Affected versionversion=2dd67966f39a2abf8ccb4865031c722e40e01b7f
  3. Affected versionversion=2feec5ae5df785658924ab6bd91280dc3926507c <ab243f74ab4084ca5c8dec608cb5b0deb27db067
  4. Affected versionversion=2feec5ae5df785658924ab6bd91280dc3926507c <c72e81ee46bdd4c221114d6e9515e9b4647616d7
  5. Affected versionversion=6.12.81 <6.12.111
  6. Affected versionversion=6.18.22 <6.18.53
  7. Affected versionversion=6.19.12 <6.20
  8. Affected versionversion=6.6.134 <6.7
  9. Affected versionversion=7.0
  10. Affected versionversion=ee0180e77e6c8482644569632065411de844c515
  11. Affected versionversion=f403094d9075d7c565a3d81002b781c325cb3c07 <12deeade460d47031267256ba07add51cc7eabd0

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=08021f2d4a557d6491e3bcc288e96425f50aa3cf <f4b64488f3deca63f7fbc7d7c3835b2e668003f9; version=2dd67966f39a2abf8ccb4865031c722e40e01b7f; version=2feec5ae5df785658924ab6bd91280dc3926507c <ab243f74ab4084ca5c8dec608cb5b0deb27db067; version=2feec5ae5df785658924ab6bd91280dc3926507c <c72e81ee46bdd4c221114d6e9515e9b4647616d7; version=6.12.81 <6.12.111; version=6.18.22 <6.18.53; version=6.19.12 <6.20; version=6.6.134 <6.7; version=7.0; version=ee0180e77e6c8482644569632065411de844c515; version=f403094d9075d7c565a3d81002b781c325cb3c07 <12deeade460d47031267256ba07add51cc7eabd0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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