CVE-2026-80776
In the Linux kernel, the following vulnerability has been resolved: futex: Fix race in futex_pivot_pending() during private hash resize A task performing a custom private hash resize can remain b…
Overview
CVE-2026-80776 is a known-severity vulnerability. It was published on September 4, 2026.
Technical description
In the Linux kernel, the following vulnerability has been resolved:
futex: Fix race in futex_pivot_pending() during private hash resize
A task performing a custom private hash resize can remain blocked in
uninterruptible sleep indefinitely. The hung-task detector reports:
INFO: task futex-resizer:314 blocked for more than 10 seconds.
task:futex-resizer state:D stack:14824 pid:314 tgid:312 ppid:311
Call Trace:
__schedule+0x521/0xf30
schedule+0x22/0xa0
futex_hash_allocate+0x3db/0x490
__do_sys_prctl+0x6f5/0xbd0
do_syscall_64+0xf9/0x530
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Kernel panic - not syncing: hung_task: blocked tasks
futex_pivot_pending() allows the resize request to continue when
either no replacement hash is pending (hash_new == NULL) or the current
hash reference count has reached zero.
After the final-reference wake, another futex task can complete the
pivot between the two observations:
T1 T2
futex_ha
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
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Frequently asked questions
What is CVE-2026-80776?
CVE-2026-80776 is a known-severity vulnerability. It was published on September 4, 2026.
How severe is CVE-2026-80776?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2026-80776?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-80776?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-80776 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.