VulnerabilityPublished 23 Oct 2026

CVE-2026-99048: Linux kernel · gve: fix napi_disable deadlock when attempting to disable XSK pools

Source GCVE Database

Authoritative record:CVE-2026-99048· Medium

Not known to be exploited · fixed in 42935a61001927aa01db10b53b420efd37eaa99b : 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: 0.1% 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 42935a61001927aa01db10b53b420efd37eaa99b, 3d377911ce81fd4e61af814e750d8e08879a5208, 0cb6939a4dfefa822007b7a71986e06bc4f61f54

Exploitation evidence

Disclosed: evidence found.
CVE published 23 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-xm5j-hpp7-cww3

What to do

Upgrade Linux kernel to 42935a61001927aa01db10b53b420efd37eaa99b, 3d377911ce81fd4e61af814e750d8e08879a5208 or 0cb6939a4dfefa822007b7a71986e06bc4f61f54.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 606048cbd8346e616cfaee01b0143d072534136d, < 42935a61001927aa01db10b53b420efd37eaa99b	Fixed in 42935a61001927aa01db10b53b420efd37eaa99b
LinuxLinux	Affected ≥ 606048cbd8346e616cfaee01b0143d072534136d, < 3d377911ce81fd4e61af814e750d8e08879a5208	Fixed in 3d377911ce81fd4e61af814e750d8e08879a5208
LinuxLinux	Affected ≥ 606048cbd8346e616cfaee01b0143d072534136d, < 0cb6939a4dfefa822007b7a71986e06bc4f61f54	Fixed in 0cb6939a4dfefa822007b7a71986e06bc4f61f54
LinuxLinux	Affected =6.16	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: gve: fix napi_disable deadlock when attempting to disable XSK pools When disabling XSK pools, GVE calls the unlocked versions of napi_disable and napi_enable. However, the netdev lock has already been acquired before ndo_bpf is called because GVE supports queue management ops. Calling the unlocked versions of napi_disable/enable results in a deadlock when attempting to disable XSK pools, as the thread attempts to re-acquire a lock it already holds. Update the NAPI calls to use the locked versions. This issue was found in production.

References

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