Vulnerability-Lookup

FKIE_CVE-2026-31514

Vulnerability from fkie_nvd - Published: 2026-04-22 14:16 - Updated: 2026-04-28 16:19

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5a5f23ef5431639db1ac3a0b274aef3a84cc413c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5cf3972c8221abdb1b464a14ccf8103d840b9085	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d1ba7d6b3cd1757b108d7b6856c92ae661d6c323	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/eade54040384f54b7fb330e4b0975c5734850b3c	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E823EB64-1F92-40BB-891C-D94D00EDA086",
              "versionEndExcluding": "6.12.80",
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              "vulnerable": true
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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."
    }
  ],
  "id": "CVE-2026-31514",
  "lastModified": "2026-04-28T16:19:39.717",
  "metrics": {
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2026-04-22T14:16:50.810",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
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          "value": "NVD-CWE-noinfo"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-04-22 13:54 – Updated: 2026-05-11 22:10

Title

erofs: set fileio bio failed in short read case

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/d1ba7d6b3cd1757b1…
https://git.kernel.org/stable/c/5cf3972c8221abdb1…
https://git.kernel.org/stable/c/5a5f23ef5431639db…
https://git.kernel.org/stable/c/eade54040384f54b7…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8d582d65d20bb4796db01b19e86909ad68cb337b , < d1ba7d6b3cd1757b108d7b6856c92ae661d6c323 (git) Affected: e49abde0ffc382a967b24f326d1614ac3bb06a94 , < 5cf3972c8221abdb1b464a14ccf8103d840b9085 (git) Affected: fe4039034dcdf584afbf763787909e28e92a4927 , < 5a5f23ef5431639db1ac3a0b274aef3a84cc413c (git) Affected: bc804a8d7e865ef47fb7edcaf5e77d18bf444ebc , < eade54040384f54b7fb330e4b0975c5734850b3c (git)
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)

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/erofs/fileio.c"
          ],
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          "vendor": "Linux",
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          "product": "Linux",
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      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/eade54040384f54b7fb330e4b0975c5734850b3c"
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      "title": "erofs: set fileio bio failed in short read case",
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}

Sightings

Author	Source	Type	Date	Other

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.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2026-31514

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

Tags

Sightings

Nomenclature