f2fs: fix to migrate all curseg types during free_segment_range (Linux Linux)

CVE-2026-89834
Not available

At a glance

Source
NVD
EPSS
EPSS 0.21 % · percentile 12 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Received

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to migrate all curseg types during free_segment_range In free_segment_range(), the curseg evacuation loop only iterates up to NR_CURSEG_PERSIST_TYPE (0..5), missing non-persistent in-memory curseg types such as CURSEG_COLD_DATA_PINNED and CURSEG_ALL_DATA_ATGC. Even though these in-memory curseg types are not saved in the on-disk checkpoint header, they still occupy active physical segments at runtime. If an active in-memory curseg happens to be allocated within the segment range being truncated during filesystem shrink, failing to evacuate it will cause subsequent writes to the curseg attempting out-of-bounds I/O on the truncated storage range. Fix this by expanding the curseg evacuation loop upper bound to NR_CURSEG_TYPE to ensure all active curseg types are safely migrated out of the target range.

References

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected d0b9e42ab6155dc05fc83f00af9f45d4dd02264d < 7ffac0deea2d84cf79051f16fed8e215c4bcf0e6 ; affected d0b9e42ab6155dc05fc83f00af9f45d4dd02264d < d358d2fc6be11eefde5eb1286f1c43a6d0330db6 ; affected d0b9e42ab6155dc05fc83f00af9f45d4dd02264d < 3b85edf3391f3e1f624f409a7d2d239885f567b7 ; affected d0b9e42ab6155dc05fc83f00af9f45d4dd02264d < b8ae1228c153622afa71a179c9d4dc268117e0f0 ; affected d0b9e42ab6155dc05fc83f00af9f45d4dd02264d < b9776094aa7118e8e5dfdcd791ffc8330c5ca408 ; affected d0b9e42ab6155dc05fc83f00af9f45d4dd02264d < 8ec06f50ddd8d201bd7e55b896ae28ed9d4cb7d1
Linux · Linuxaffected 5.10 ; unaffected 0 < 5.10 ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.160 ≤ 6.6.* ; unaffected 6.12.110 ≤ 6.12.* ; unaffected 6.18.51 ≤ 6.18.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD