CVE-2026-52960: ceph: put folios not suitable for writeback
In the Linux kernel, the following vulnerability has been resolved:
ceph: put folios not suitable for writeback
The batch holds references to the folios (see filemapgetfolios, foliobatchrelease), so we need to folioput the folios we remove.
Tested on v6.18.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
In the ceph writeback path, call folio_put on folios removed from the batch, since the batch holds references to them.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-52960?
The severity of CVE-2026-52960 is rated at level 17.
How do I fix CVE-2026-52960?
To address CVE-2026-52960, ensure that you update to the Linux kernel version that contains the fix for this vulnerability.
What systems are affected by CVE-2026-52960?
CVE-2026-52960 affects the Linux kernel, specifically versions prior to the fix implemented in v6.18.
What potential impact does CVE-2026-52960 have?
CVE-2026-52960 could lead to improper handling of memory references, potentially affecting system stability.
Is CVE-2026-52960 specific to any particular Linux distribution?
CVE-2026-52960 is a vulnerability in the Linux kernel and affects all distributions that utilize the vulnerable kernel versions.