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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          "programFiles": [
            "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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}


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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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