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CVE-2024-26955 (GCVE-0-2024-26955)

Vulnerability from cvelistv5 – Published: 2024-05-01 05:18 – Updated: 2026-05-11 20:07
VLAI
Title
nilfs2: prevent kernel bug at submit_bh_wbc()
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: prevent kernel bug at submit_bh_wbc() Fix a bug where nilfs_get_block() returns a successful status when searching and inserting the specified block both fail inconsistently. If this inconsistent behavior is not due to a previously fixed bug, then an unexpected race is occurring, so return a temporary error -EAGAIN instead. This prevents callers such as __block_write_begin_int() from requesting a read into a buffer that is not mapped, which would cause the BUG_ON check for the BH_Mapped flag in submit_bh_wbc() to fail.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-28 17:51 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b , < 91e4c4595fae5e87069e44687ae879091783c183 (git)
Affected: 1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b , < 32eaee72e96590a75445c8a6c7c1057673b47e07 (git)
Affected: 1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b , < f0fe7ad5aff4f0fcf988913313c497de85f1e186 (git)
Affected: 1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b , < ca581d237f3b8539c044205bb003de71d75d227c (git)
Affected: 1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b , < 192e9f9078c96be30b31c4b44d6294b24520fce5 (git)
Affected: 1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b , < 0c8aa4cfda4e4adb15d5b6536d155eca9c9cd44c (git)
Affected: 1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b , < 48d443d200237782dc82e6b60663ec414ef02e39 (git)
Affected: 1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b , < 76ffbe911e2798c7296968f5fd72f7bf67207a8d (git)
Affected: 1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b , < 269cdf353b5bdd15f1a079671b0f889113865f20 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.30
Unaffected: 0 , < 2.6.30 (semver)
Unaffected: 4.19.312 , ≤ 4.19.* (semver)
Unaffected: 5.4.274 , ≤ 5.4.* (semver)
Unaffected: 5.10.215 , ≤ 5.10.* (semver)
Unaffected: 5.15.154 , ≤ 5.15.* (semver)
Unaffected: 6.1.84 , ≤ 6.1.* (semver)
Unaffected: 6.6.24 , ≤ 6.6.* (semver)
Unaffected: 6.7.12 , ≤ 6.7.* (semver)
Unaffected: 6.8.3 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "product_status:known_not_affected": "138",
      "product_status:recommended": "527",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-26955",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-26955.json",
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\"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/nilfs2/inode.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/91e4c4595fae5e87069e44687ae879091783c183\"}, {\"url\": \"https://git.kernel.org/stable/c/32eaee72e96590a75445c8a6c7c1057673b47e07\"}, {\"url\": \"https://git.kernel.org/stable/c/f0fe7ad5aff4f0fcf988913313c497de85f1e186\"}, {\"url\": \"https://git.kernel.org/stable/c/ca581d237f3b8539c044205bb003de71d75d227c\"}, {\"url\": \"https://git.kernel.org/stable/c/192e9f9078c96be30b31c4b44d6294b24520fce5\"}, {\"url\": \"https://git.kernel.org/stable/c/0c8aa4cfda4e4adb15d5b6536d155eca9c9cd44c\"}, {\"url\": \"https://git.kernel.org/stable/c/48d443d200237782dc82e6b60663ec414ef02e39\"}, {\"url\": \"https://git.kernel.org/stable/c/76ffbe911e2798c7296968f5fd72f7bf67207a8d\"}, {\"url\": \"https://git.kernel.org/stable/c/269cdf353b5bdd15f1a079671b0f889113865f20\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnilfs2: prevent kernel bug at submit_bh_wbc()\\n\\nFix a bug where nilfs_get_block() returns a successful status when\\nsearching and inserting the specified block both fail inconsistently.  If\\nthis inconsistent behavior is not due to a previously fixed bug, then an\\nunexpected race is occurring, so return a temporary error -EAGAIN instead.\\n\\nThis prevents callers such as __block_write_begin_int() from requesting a\\nread into a buffer that is not mapped, which would cause the BUG_ON check\\nfor the BH_Mapped flag in submit_bh_wbc() to fail.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.312\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.274\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.215\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.154\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.84\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.24\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.12\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.3\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"2.6.30\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:07:37.017Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26955\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:07:37.017Z\", \"dateReserved\": \"2024-02-19T14:20:24.200Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-01T05:18:51.866Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.