CVE-2026-43117
Linux Kernel vulnerability
- Published6 May 2026
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file() If overlay is used on top of btrfs, dentry->d_sb translates to overlay's super block and fsid assignment will lead to a crash. Use file_inode(file)->i_sb to always get btrfs_sb.
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HAffected products
Remediation
- https://git.kernel.org/stable/c/2e4adfaec97ee053ad1bdfb5036845e66f7e0d8a
- https://git.kernel.org/stable/c/32372781d664a9b03c40343e96c29d0a6139f97d
- https://git.kernel.org/stable/c/a85b46db143fda5869e7d8df8f258ccef5fa1719
- https://git.kernel.org/stable/c/c09a7446aab5773f38d6abb25fce99b8e1dfbc97
- https://git.kernel.org/stable/c/d110d7cdb045715c0b45b0dfd974525bb38f653d
References
- https://git.kernel.org/stable/c/2e4adfaec97ee053ad1bdfb5036845e66f7e0d8a
- https://git.kernel.org/stable/c/32372781d664a9b03c40343e96c29d0a6139f97d
- https://git.kernel.org/stable/c/4a7bab35fad5251c8cb738161152578cd83b6b9c
- https://git.kernel.org/stable/c/520e8b4bcf872a534a7bf61ccf880047642df296
- https://git.kernel.org/stable/c/a85b46db143fda5869e7d8df8f258ccef5fa1719
- https://git.kernel.org/stable/c/c09a7446aab5773f38d6abb25fce99b8e1dfbc97
- https://git.kernel.org/stable/c/d110d7cdb045715c0b45b0dfd974525bb38f653d
- https://git.kernel.org/stable/c/e252db8ca2a01f82d472091f35d549b313278636
Frequently asked
Is CVE-2026-43117 being actively exploited?
CVE-2026-43117 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.73%.
How severe is CVE-2026-43117?
CVE-2026-43117 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.73% probability of exploitation.
Which products are affected by CVE-2026-43117?
Affected products include Linux Kernel.
How do I fix CVE-2026-43117?
Upgrade affected software to a fixed version, for example Linux Kernel 6.6.136 or later, then confirm no affected versions remain in your inventory.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2026-43117 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.