VulnerabilityPublished 6 Aug 2026Updated 6 Nov 2026

CVE-2026-68480: Linux kernel · x86/bugs: Make Safe-RET robust against interrupt injection

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in e262f28a69ae9e0791248f93b0173c1d1f3e1d5d : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:04 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in e262f28a69ae9e0791248f93b0173c1d1f3e1d5d, dfefa3c51370f84acb643cddf98bb42c885d0483, d0208e08d64d99383e09852a76cc3038c5a4c3ab +9

Exploitation evidence

Disclosed: evidence found.
CVE published 6 Aug 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 6 Nov 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.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected >=5.10.189 <5.10.264 >=5.15.125 <5.15.215 >=6.1.44 <6.1.182 >=6.4.9 <6.5	Fixed in e262f28a69ae9e0791248f93b0173c1d1f3e1d5d dfefa3c51370f84acb643cddf98bb42c885d0483 d0208e08d64d99383e09852a76cc3038c5a4c3ab bfe7f9993467ba431b2731437949ac1e2634e771 61649a2d61cb0dbc673f0f232f0f0c298bf50442 6703dba1d14cbd6647cd1ccfa3a3fa94b64dd096 52db77a13be224e09eb4ba6b4252ae8ab9085c2c 7e7f81cf6f5ca3311e526308f55d7c54d3ba71f9 6.5 6.1.182 5.15.215 5.10.264
LinuxLinux	Affected =6.5	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Make Safe-RET robust against interrupt injection An attacker injecting interrupts while the Safe-RET mitigation executes on machines affected by SRSO can neutralize the safe return sequence, potentially leading to data leakage through speculative execution. Fixup register state as if the Safe-RET sequence executed successfully by "emulating" it, in a manner of speaking, and avoid executing a RET instruction after returning from the interrupt.

References

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