VulnerabilityPublished 18 Oct 2026

CVE-2026-98494: Linux kernel · net: atl1: fix soft lockup on out-of-range cmb_tpd_next_to_clean read

Source GCVE Database

Authoritative record:CVE-2026-98494· Medium

Not known to be exploited · fixed in c55e51d5899e80f9593b26985ed0b89e0c828a5e : update Linux kernel when convenient.

Data as of 26 Oct 2026, 17:16 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in c55e51d5899e80f9593b26985ed0b89e0c828a5e, 6285919d4c06254d257d24dc980f6332e1984a82, 632cd7b81cb7bab36112f02eb2ee7f7cc1214fb1 +5

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.

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.

ghsa-9q2h-qvmx-46mv

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ f3cc28c797604fa1cda4aef3f250f465de54a0ca, < c55e51d5899e80f9593b26985ed0b89e0c828a5e	Fixed in c55e51d5899e80f9593b26985ed0b89e0c828a5e
LinuxLinux	Affected ≥ f3cc28c797604fa1cda4aef3f250f465de54a0ca, < 6285919d4c06254d257d24dc980f6332e1984a82	Fixed in 6285919d4c06254d257d24dc980f6332e1984a82
LinuxLinux	Affected ≥ f3cc28c797604fa1cda4aef3f250f465de54a0ca, < 632cd7b81cb7bab36112f02eb2ee7f7cc1214fb1	Fixed in 632cd7b81cb7bab36112f02eb2ee7f7cc1214fb1
LinuxLinux	Affected ≥ f3cc28c797604fa1cda4aef3f250f465de54a0ca, < 79e2447b11322c27ef9ac423be0a94efc7691f02	Fixed in 79e2447b11322c27ef9ac423be0a94efc7691f02
LinuxLinux	Affected ≥ f3cc28c797604fa1cda4aef3f250f465de54a0ca, < 43e746821f5f5afbbf68e388bf9fbe221e03bfca	Fixed in 43e746821f5f5afbbf68e388bf9fbe221e03bfca
LinuxLinux	Affected ≥ f3cc28c797604fa1cda4aef3f250f465de54a0ca, < 6ab9f61ca851f02ae4398cebaf00735a22e1d6ca	Fixed in 6ab9f61ca851f02ae4398cebaf00735a22e1d6ca

AI-suggested

A fix for this vulnerability has been implemented in the Linux kernel. Users should apply the official kernel updates that include this patch to resolve the issue. No additional mitigation steps are indicated.

Description

A vulnerability in the Linux kernel's atl1 network driver caused a soft lockup due to an out-of-range read of cmb_tpd_next_to_clean. This occurs when the hardware reports an invalid value (0xffff) during PCIe link or MAC reset, causing an infinite loop in the driver. The issue has been resolved by treating the out-of-range value as indicating no new data to clean.

References

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