VulnerabilityPublished 24 Sep 2026Updated 19 Oct 2026

CVE-2026-93215: Linux kernel · cdx: Fix double free when sysfs file creation fails

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in 88f4cd42a04bdadd189d7f667a4c279f4e962ca6 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 88f4cd42a04bdadd189d7f667a4c279f4e962ca6, 7e9451bf0bdba6daee1eaf4e7566612af6ca1c32, 6f4acc3a3c300e174e3f586b97b04ed8f5948c36 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 24 Sep 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.

What to do

Upgrade Linux kernel to 88f4cd42a04bdadd189d7f667a4c279f4e962ca6, 7e9451bf0bdba6daee1eaf4e7566612af6ca1c32, 6f4acc3a3c300e174e3f586b97b04ed8f5948c36 or 4cd24873ab9fdbd730604881a6e8087bc7b99336.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d, < 88f4cd42a04bdadd189d7f667a4c279f4e962ca6	Fixed in 88f4cd42a04bdadd189d7f667a4c279f4e962ca6
LinuxLinux	Affected ≥ aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d, < 7e9451bf0bdba6daee1eaf4e7566612af6ca1c32	Fixed in 7e9451bf0bdba6daee1eaf4e7566612af6ca1c32
LinuxLinux	Affected ≥ aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d, < 6f4acc3a3c300e174e3f586b97b04ed8f5948c36	Fixed in 6f4acc3a3c300e174e3f586b97b04ed8f5948c36
LinuxLinux	Affected ≥ aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d, < 4cd24873ab9fdbd730604881a6e8087bc7b99336	Fixed in 4cd24873ab9fdbd730604881a6e8087bc7b99336
LinuxLinux	Affected =6.8	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: cdx: Fix double free when sysfs file creation fails In cdx_create_res_attr(), if sysfs_create_bin_file() fails, the code frees res_attr but doesn't set cdx_dev->res_attr[num] to NULL. This leaves a dangling pointer in the array. Then cdx_destroy_res_attr() frees the already-freed memory. Fix the double free by initializing cdx_dev->res_attr[num] after sysfs_create_bin_file() completes.

References

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