VulnerabilityPublished 17 Sep 2026Updated 19 Oct 2026

CVE-2026-93153: Linux kernel · RDMA/bng_re: return a timeout when firmware responses stall

Affects Linux kernelSource CVE Database V5

Not known to be exploited : upgrade to 5f9576c6734abca88a02db72c466e09d2eddf160 or 02d4ee65dc2e883f554169155937742e6014c243 when convenient.

Data as of 26 Oct 2026, 14:32 UTC

Severity

Medium

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 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 5f9576c6734abca88a02db72c466e09d2eddf160, 02d4ee65dc2e883f554169155937742e6014c243

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 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.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to 5f9576c6734abca88a02db72c466e09d2eddf160 or 02d4ee65dc2e883f554169155937742e6014c243.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 53c6ee7d7f68a0679f8ddc703338aa2550d24a17, < 5f9576c6734abca88a02db72c466e09d2eddf160	Fixed in 5f9576c6734abca88a02db72c466e09d2eddf160
LinuxLinux	Affected ≥ 53c6ee7d7f68a0679f8ddc703338aa2550d24a17, < 02d4ee65dc2e883f554169155937742e6014c243	Fixed in 02d4ee65dc2e883f554169155937742e6014c243
LinuxLinux	Affected =6.19	Fixed in–

AI-suggested

A fix is available in the Linux kernel commits identified by hashes 5f9576c6734abca88a02db72c466e09d2eddf160 and 02d4ee65dc2e883f554169155937742e6014c243. Users should update to a kernel version including these fixes to resolve the issue.

Description

A vulnerability in the Linux kernel's RDMA bng_re driver causes an indefinite stall when firmware responses do not complete, due to improper handling of timeout events. The issue is fixed by returning an error after a timed-out wait, allowing the firmware stall to be detected and the command to time out properly.

Impact

The vulnerability could cause indefinite blocking or stalling of firmware commands in the RDMA bng_re driver, potentially impacting system stability or responsiveness when firmware responses stall. There is no indication of code execution or privilege escalation. No known exploits in the wild have been reported.

Summary

The Linux kernel RDMA bng_re driver had a flaw where the helper function ignored the expiry of wait_event_timeout(), causing the wait loop to potentially repeat indefinitely if the firmware response slot remained in use after the timeout. This could cause the firmware command to stall without returning an error. The fix returns -ENODEV after a timed-out wait with no response, enabling the caller to mark the firmware as stalled and return -ETIMEDOUT to the command issuer. This resolves the indefinite stall condition.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 14:32 UTC

Technical details

References

Community reviews

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