CVE-2026-31514 (GCVE-0-2026-31514)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:54 – Updated: 2026-05-11 22:10
VLAI?
Title
erofs: set fileio bio failed in short read case
Summary
In the Linux kernel, the following vulnerability has been resolved: erofs: set fileio bio failed in short read case For file-backed mount, IO requests are handled by vfs_iocb_iter_read(). However, it can be interrupted by SIGKILL, returning the number of bytes actually copied. Unused folios in bio are unexpectedly marked as uptodate. vfs_read filemap_read filemap_get_pages filemap_readahead erofs_fileio_readahead erofs_fileio_rq_submit vfs_iocb_iter_read filemap_read filemap_get_pages <= detect signal erofs_fileio_ki_complete <= set all folios uptodate This patch addresses this by setting short read bio with an error directly.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8d582d65d20bb4796db01b19e86909ad68cb337b , < d1ba7d6b3cd1757b108d7b6856c92ae661d6c323 (git)
Affected: e49abde0ffc382a967b24f326d1614ac3bb06a94 , < 5cf3972c8221abdb1b464a14ccf8103d840b9085 (git)
Affected: fe4039034dcdf584afbf763787909e28e92a4927 , < 5a5f23ef5431639db1ac3a0b274aef3a84cc413c (git)
Affected: bc804a8d7e865ef47fb7edcaf5e77d18bf444ebc , < eade54040384f54b7fb330e4b0975c5734850b3c (git)
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Linux Linux Affected: 6.12.75 , < 6.12.80 (semver)
Affected: 6.18.14 , < 6.18.21 (semver)
Affected: 6.19.4 , < 6.19.11 (semver)
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{
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            "fs/erofs/fileio.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: set fileio bio failed in short read case\n\nFor file-backed mount, IO requests are handled by vfs_iocb_iter_read().\nHowever, it can be interrupted by SIGKILL, returning the number of\nbytes actually copied. Unused folios in bio are unexpectedly marked\nas uptodate.\n\n  vfs_read\n    filemap_read\n      filemap_get_pages\n        filemap_readahead\n          erofs_fileio_readahead\n            erofs_fileio_rq_submit\n              vfs_iocb_iter_read\n                filemap_read\n                  filemap_get_pages  \u003c= detect signal\n              erofs_fileio_ki_complete  \u003c= set all folios uptodate\n\nThis patch addresses this by setting short read bio with an error\ndirectly."
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      "providerMetadata": {
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    "dateReserved": "2026-03-09T15:48:24.107Z",
    "dateUpdated": "2026-05-11T22:10:16.061Z",
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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