VulnerabilityPublished 18 Oct 2026

CVE-2026-98724: Linux kernel · nvmet: pci-epf: reject too-short SGL segments

Source GCVE Database

Authoritative record:CVE-2026-98724· Medium

Not known to be exploited · fixed in 2423a05dd0f21330c47ce0ae1cb54a8b0be821e2 : 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 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 2423a05dd0f21330c47ce0ae1cb54a8b0be821e2, 472df1d103dbe3e9d09156f0667e36180e912c46, 5d5fbfbbacd1efb13a9bf91317d4fde859ede4b9

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-hhpp-pj9h-fh67

What to do

Upgrade Linux kernel to 2423a05dd0f21330c47ce0ae1cb54a8b0be821e2, 472df1d103dbe3e9d09156f0667e36180e912c46 or 5d5fbfbbacd1efb13a9bf91317d4fde859ede4b9.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 0faa0fe6f90ea59b10d1b0f15ce0eb0c18eff186, < 2423a05dd0f21330c47ce0ae1cb54a8b0be821e2	Fixed in 2423a05dd0f21330c47ce0ae1cb54a8b0be821e2
LinuxLinux	Affected ≥ 0faa0fe6f90ea59b10d1b0f15ce0eb0c18eff186, < 472df1d103dbe3e9d09156f0667e36180e912c46	Fixed in 472df1d103dbe3e9d09156f0667e36180e912c46
LinuxLinux	Affected ≥ 0faa0fe6f90ea59b10d1b0f15ce0eb0c18eff186, < 5d5fbfbbacd1efb13a9bf91317d4fde859ede4b9	Fixed in 5d5fbfbbacd1efb13a9bf91317d4fde859ede4b9
LinuxLinux	Affected =6.14	Fixed in–
Linuxlinux/kernel`pkg:deb/linux/kernel`Other threats	Affected =6.14	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available that rejects SGL segments too short to hold a descriptor before processing. Users should update their Linux kernel to a version that includes this fix. Since no vendor advisory or patch link is provided, check the official Linux kernel repositories or vendor advisories for the patch and apply it promptly.

Description

A vulnerability in the Linux kernel's nvmet pci-epf component allows a host to control an SGL segment's length improperly, leading to an out-of-bounds read. Specifically, if the segment length is nonzero but smaller than one SGL descriptor, the function nvmet_pci_epf_get_sgl_segment() reads memory before the allocated buffer. This issue was confirmed by kernel address sanitizer (KASAN) tests causing kernel panic. The fix involves rejecting SGL segments that are too short to hold a descriptor before processing them.

References

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