VulnerabilityPublished 18 Oct 2026

CVE-2026-98795: Linux kernel · net: sparx5: skip ptp deinit if init was skipped

Source GCVE Database

Authoritative record:CVE-2026-98795· Medium

Not known to be exploited · fixed in 2879b65bfa548e10d59c5fba91d17f8a00cd7029 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 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 2879b65bfa548e10d59c5fba91d17f8a00cd7029, 35c706d6eb1963735814c5f5bb2674a96eacf3cc, 0d2c49915bc3aea4521cda5e4d42f24f63b94585

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-9hv5-vqfc-jqjg

What to do

Upgrade Linux kernel to 2879b65bfa548e10d59c5fba91d17f8a00cd7029, 35c706d6eb1963735814c5f5bb2674a96eacf3cc or 0d2c49915bc3aea4521cda5e4d42f24f63b94585.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 0933bd04047c3b96ba49545a8f91e7e6f8f666ff, < 2879b65bfa548e10d59c5fba91d17f8a00cd7029	Fixed in 2879b65bfa548e10d59c5fba91d17f8a00cd7029
LinuxLinux	Affected ≥ 0933bd04047c3b96ba49545a8f91e7e6f8f666ff, < 35c706d6eb1963735814c5f5bb2674a96eacf3cc	Fixed in 35c706d6eb1963735814c5f5bb2674a96eacf3cc
LinuxLinux	Affected ≥ 0933bd04047c3b96ba49545a8f91e7e6f8f666ff, < 0d2c49915bc3aea4521cda5e4d42f24f63b94585	Fixed in 0d2c49915bc3aea4521cda5e4d42f24f63b94585
LinuxLinux	Affected =5.18	Fixed in–

AI-suggested

A fix is available that modifies sparx5_ptp_deinit() to return early if PTP is not used, preventing the NULL pointer dereference. Users should apply the updated Linux kernel version containing this patch once released. No other mitigations are indicated.

Description

A NULL pointer dereference vulnerability in the Linux kernel's sparx5 network driver was resolved. The issue occurs when sparx5_ptp_init() returns early due to missing PTP features or interrupts, but sparx5_ptp_deinit() does not check this and attempts to clean up uninitialized resources, causing a kernel NULL pointer dereference. The fix adds an early return in sparx5_ptp_deinit() if PTP is not used, preventing the crash.

References

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