VulnerabilityPublished 25 Sep 2026Updated 30 Oct 2026

CVE-2026-97599: Linux kernel · ieee802154: hwsim: serialize pib updates to fix double-free

Source GCVE Database

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Authoritative record:CVE-2026-97599· High

Not known to be exploited · fixed in e3b4681197aa026bd2d79358de5a3d62b76b04b9 : patch Linux kernel soon.

Data as of 30 Oct 2026, 17:33 UTC

Severity

High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Patch: Available – fixed in e3b4681197aa026bd2d79358de5a3d62b76b04b9, db6442deecb1f13aeaf4f9d77746ea7555630fb3, d3b8f264ce09573aededd0a97dc41c8147797d8f +3

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 30 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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-r8g8-vw6g-m8xh

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ f25da51fdc381ca2863248c7060b3662632f0872, < e3b4681197aa026bd2d79358de5a3d62b76b04b9	Fixed in e3b4681197aa026bd2d79358de5a3d62b76b04b9
LinuxLinux	Affected ≥ f25da51fdc381ca2863248c7060b3662632f0872, < db6442deecb1f13aeaf4f9d77746ea7555630fb3	Fixed in db6442deecb1f13aeaf4f9d77746ea7555630fb3
LinuxLinux	Affected ≥ f25da51fdc381ca2863248c7060b3662632f0872, < d3b8f264ce09573aededd0a97dc41c8147797d8f	Fixed in d3b8f264ce09573aededd0a97dc41c8147797d8f
LinuxLinux	Affected ≥ f25da51fdc381ca2863248c7060b3662632f0872, < 9973b3a67a7592a780ea12b08334539a900deec1	Fixed in 9973b3a67a7592a780ea12b08334539a900deec1
LinuxLinux	Affected ≥ f25da51fdc381ca2863248c7060b3662632f0872, < 979d5b8de8ed4e1f997aef12da5694b99be7b871	Fixed in 979d5b8de8ed4e1f997aef12da5694b99be7b871
LinuxLinux	Affected ≥ f25da51fdc381ca2863248c7060b3662632f0872, < 8f44a61f816581c35c1974c8c1a3b3c2c49e96be	Fixed in 8f44a61f816581c35c1974c8c1a3b3c2c49e96be

AI-suggested

A fix has been implemented that adds locking to serialize pib updates and makes the pointer swap atomic. Users should apply the official Linux kernel patches that address this issue once available. Until patched, avoiding untrusted code execution in kernel context is advised.

Description

A double-free vulnerability was identified and fixed in the Linux kernel's ieee802154 hwsim driver. The issue arises from unserialized updates to the phy->pib pointer, which can lead to concurrent frees of the same memory object, causing kernel memory corruption detected by KASAN. The fix involves adding a lock to serialize pib updates and making the pointer swap atomic.

References

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