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Vulnerabilities

Vulnerability · CVE-2025-71080

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix a BUG in rt6_get_pcpu_route() under PREEMPT_RT On PREEMPT_RT kernels, after rt6_get_pcpu_route() retur

Published Jan 13, 2026 · catalog updated Aug 5, 2026 · Linux Linux

Last checked Nov 7, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-71080. EPSS is 0.30%. Act only if a listed version of Linux Linux is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.30%
Remediation
Version ranges on file
Affected products
vendor Linux Linux d2d6422f8bd17c6bb205133e290625a564194496 <1dc33ad0867325f8d2c6d7b2a6f542d4f3121f66

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix a BUG in rt6_get_pcpu_route() under PREEMPT_RT On PREEMPT_RT kernels, after rt6_get_pcpu_route() returns NULL, the current task can be preempted. Another task running on the same CPU may then execute rt6_make_pcpu_route() and successfully install a pcpu_rt entry. When the first task resumes execution, its cmpxchg() in rt6_make_pcpu_route() will fail because rt6i_pcpu is no longer NULL, triggering the BUG_ON(prev). It's easy to reproduce it by adding mdelay() after rt6_get_pcpu_route(). Using preempt_disable/enable is

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux d2d6422f8bd17c6bb205133e290625a564194496 <1dc33ad0867325f8d2c6d7b2a6f542d4f3121f66d2d6422f8bd17c6bb205133e290625a564194496 <1dc33ad0867325f8d2c6d7b2a6f542d4f3121f66

How to fix CVE-2025-71080

  • Upgrade

    CVE-2025-71080 lists a fix boundary at 1dc33ad0867325f8d2c6d7b2a6f542d4f3121f66. Compare the installed build with that boundary before you change production.

  • Version check

    Seen in d2d6422f8bd17c6bb205133e290625a564194496 <1dc33ad0867325f8d2c6d7b2a6f542d4f3121f66

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-71080. EPSS is 0.30%. Act only if a listed version of Linux Linux is installed.

Which versions are affected?

Compare what you have installed with Linux Linux d2d6422f8bd17c6bb205133e290625a564194496 <1dc33ad0867325f8d2c6d7b2a6f542d4f3121f66 d2d6422f8bd17c6bb205133e290625a564194496 <1dc33ad0867325f8d2c6d7b2a6f542d4f3121f66. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.30%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 13, 2026 · EUVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: ipv6: fix a BUG in rt6_get_pcpu_route() under PREEMPT_RT On PREEMPT_RT kernels, after rt6_get_pcpu_route() returns NULL, the current task can be preempted. Another task running on the same CPU may then execute rt6_make_pcpu_route() and successfully install a pcpu_rt entry. When the first task resumes execution, its cmpxchg() in rt

  2. Aug 5, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: ipv6: fix a BUG in rt6_get_pcpu_route() under PREEMPT_RT On PREEMPT_RT kernels, after rt6_get_pcpu_route() returns NULL, the current task can be preempted. Another task running on the same CPU may then execute rt6_make_pcpu_route() and successfully install a pcpu_rt entry. When the first task resumes execution, its cmpxchg() in rt

Sources

  • CVE.orgVulnerability recordCVE-2025-71080

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-71080

    30-day exploitation probability 0.30%

    first.org
  • EUVDVulnerability recordEUVD-2026-2250

    In the Linux kernel, the following vulnerability has been resolved: ipv6: fix a BUG in rt6_get_pcpu_route() under PREEMPT_RT On PREEMPT_RT kernels, after rt6_get_pcpu_route() returns NULL, the current task can be preempted. Another task running on the same CPU may then execute rt

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 7, 2026
  • CVE.orgOct 29, 2026
  • EUVDOct 29, 2026