fuse: re-lock request before replacing page cache folio (Linux Linux)

CVE-2026-53388
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.13 % · percentile 3 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: fuse: re-lock request before replacing page cache folio fuse_try_move_folio() unlocks the request on entry but does not re-lock it on the success path. This means fuse_chan_abort() can end the request and free the fuse_io_args (eg fuse_readpages_end()) while the subsequent copy chain logic after fuse_try_move_folio() accesses the fuse_io_args, leading to use-after-free issues. Fix this by calling lock_request() before replace_page_cache_folio(). This ensures the request is locked on the success path which will prevent the fuse_io_args from being freed while the later copying logic runs, and also ensures that the ap->folios[i]->mapping is never null since ap->folios[i] will always point to the newfolio after replace_page_cache_folio().

Weaknesses (CWE)

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected ce534fb052928ce556639d7ecf01cbf4e01321e1 < 7c18691e0cfda29672f79bafde8abdb7710674f6 ; affected ce534fb052928ce556639d7ecf01cbf4e01321e1 < 5927b43a4f8d89e86930f524bf63e9c7e66f61b4 ; affected ce534fb052928ce556639d7ecf01cbf4e01321e1 < 030fe3e9d8abdee303dd7e9e42f45082d382a407 ; affected ce534fb052928ce556639d7ecf01cbf4e01321e1 < 46473ddccdc5065033e397d6e62c280dbcd3d9c2 ; affected ce534fb052928ce556639d7ecf01cbf4e01321e1 < af2892249d982a1c036ca456cc135374e68b6677 ; affected ce534fb052928ce556639d7ecf01cbf4e01321e1 < 0223f452532d9cd8a5e87c45de828fd93c99bd25
Linux · Linuxaffected 2.6.35 ; unaffected 0 < 2.6.35 ; unaffected 5.15.211 ≤ 5.15.* ; unaffected 6.1.177 ≤ 6.1.* ; unaffected 6.6.144 ≤ 6.6.* ; unaffected 6.12.95 ≤ 6.12.*

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