VulnerabilityPublished 18 Oct 2026

CVE-2026-98533: Linux kernel · ipe: protect the dm-verity root hash with RCU

Source GCVE Database

Authoritative record:CVE-2026-98533· Medium

Not known to be exploited · fixed in d7c5bd3159235edb0f2febe2cd3d3b0fb53986f1 : 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: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in d7c5bd3159235edb0f2febe2cd3d3b0fb53986f1, 2776e9c28513a1c855a94792b292cbcc533418c8, 599d0498a39319285afa908762e0c9fad29f772e +1

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-8f5g-gpf2-m64q

What to do

Upgrade Linux kernel to d7c5bd3159235edb0f2febe2cd3d3b0fb53986f1, 2776e9c28513a1c855a94792b292cbcc533418c8, 599d0498a39319285afa908762e0c9fad29f772e or 3bd335ed62444bec61201df7d368a0779e5bd300.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ e155858dd99523d4afe0f74e9c26e4f4499eb5af, < d7c5bd3159235edb0f2febe2cd3d3b0fb53986f1	Fixed in d7c5bd3159235edb0f2febe2cd3d3b0fb53986f1
LinuxLinux	Affected ≥ e155858dd99523d4afe0f74e9c26e4f4499eb5af, < 2776e9c28513a1c855a94792b292cbcc533418c8	Fixed in 2776e9c28513a1c855a94792b292cbcc533418c8
LinuxLinux	Affected ≥ e155858dd99523d4afe0f74e9c26e4f4499eb5af, < 599d0498a39319285afa908762e0c9fad29f772e	Fixed in 599d0498a39319285afa908762e0c9fad29f772e
LinuxLinux	Affected ≥ e155858dd99523d4afe0f74e9c26e4f4499eb5af, < 3bd335ed62444bec61201df7d368a0779e5bd300	Fixed in 3bd335ed62444bec61201df7d368a0779e5bd300
LinuxLinux	Affected =6.12	Fixed in–

AI-suggested

A fix has been implemented in the Linux kernel to protect the dm-verity root hash with RCU synchronization. Users should update to the patched kernel version once available.

Description

A vulnerability in the Linux kernel related to dm-verity root hash handling has been resolved. The function ipe_bdev_setintegrity() improperly frees the old root hash while it may still be dereferenced during policy evaluation. The fix involves protecting the root hash with RCU (Read-Copy-Update) synchronization to prevent use-after-free conditions.

References

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