CVE-2026-89840

CVE CVE-2026-89840EUVD EUVD-2026-80440Published 2026-09-16T10:31:14.000ZLast changed 2026-09-21T13:15:08.000ZCVSS 7.1

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate MOVE_RANGE destination size F2FS_IOC_MOVE_RANGE checks the source range, but not the destination end before updating i_size. A source hole can expose this: __clone_blkaddrs() skips NULL_ADDR entries and returns success, so the caller can still extend the destination inode with unchecked pos_out + len. Reject destination overflow and use inode_newsize_ok() before extending the destination inode.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b <e533889fc26aea0cd83c90327063f272061dd820; 4.8; patch: 0; patch: 6.18.53; patch: 7.3-rc1; patch: 7.2.5; 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b <db13064669526494cd78ba3a4394063b740e940c; 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b <dcae1eeda53149f219dd6af93b3083b7271c1c63

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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